- 2 days ago
Stop discarding those empty toilet paper rolls! You might be overlooking a valuable resource for home optimization. These seemingly useless cardboard cylinders possess incredible structural properties that can revolutionize your daily routine. Discover innovative ways to repurpose them and uncover the genius behind everyday items that can enhance your life. Get ready to transform your habits with this clever utility hack!
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00:00The Queen's Guard all appear to have the same uniform, with a shared role of standing stoically for a long
00:06time.
00:07But if you look closely at their hats, there are five different types.
00:12The Grenadier has a white plume, the Coldstream has a red one, the Irish a blue plume, the Welsh green
00:19and white, and the Scots Guard has none.
00:23Their different divisions perform similar ceremonial duties at Buckingham Palace, but they have other actual roles as well, suited to
00:32their specialization.
00:34When peeling your boiled eggs, you can see a hidden layer under the shell.
00:38These two membranes, an inner and outer one, are made from the same stuff as your hair, keratin.
00:44It protects the inside from bacteria and stops liquids from escaping.
00:49You use X in your texts, which represents a kiss. It's been used this way for a very long time.
00:55Its original purpose dates back to the Middle Ages, where it was a representation of a person's faith, honesty, and
01:02sincerity.
01:03Those that would sign off with an X would kiss it after signing as a display of a sworn oath.
01:10The X's meaning later changed to represent the action of kissing.
01:14And the first document showing this was a letter dating back to 1763, written by a naturalist, Gilbert White, who
01:22sent it to his wife.
01:25William Shakespeare is a name familiar to everyone.
01:28However, we don't know whether this was the actual way his name was spelled, and neither did he.
01:34He signed 80 different variations of his name spelling on all his works.
01:39Historians haven't a clue which the correct spelling is.
01:42The version that we know of was only used on two of his plays.
01:48Different forms of alarm clocks were invented as far back as 348 BCE, with many versions throughout the world, all
01:56with complicated mechanics.
01:58Unaffordable to mostly everyone, they didn't catch on.
02:02Alternate methods to wake up in the morning started to be used in the 1800s.
02:06One process involving knocker-uppers was common in some countries.
02:11A person visited your house every morning to knock on your door four times.
02:17Inventor Antoine Rédier felt that he should be woken only when he felt it necessary.
02:22So, in 1847, he invented the first adjustable alarm clock.
02:28Tennis balls in Wimbledon must be kept at a perfect temperature to ensure they bounce at a consistent level.
02:35They're stored at 68 degrees Fahrenheit, so they're cold enough that the molecules inside the ball shrink, ensuring they bounce
02:42lower.
02:43Then, they're continuously swapped throughout a match as they expand by being hit too much, becoming too bouncy.
02:51Wimbledon goes through 50,000 tennis balls each year.
02:56You enjoy the smell of a freshly mowed lawn, as you associate it with the weekends and summer.
03:02But that smell is a sign of stress made by the grass.
03:05Grass evolved to emit various elements when being eaten by bugs.
03:10This signal attracts predator insects to remove them.
03:14But unfortunately for the grass, there's nothing large enough to deter a lawnmower.
03:19There is no oxygen inside your packet of chips.
03:23If there was, it would influence the combination of molecules forming inside, spoiling the chips faster.
03:29The packets are instead filled with nitrogen, which pushes oxygen out.
03:34And this extends the shelf life and quality of your chips.
03:39You're traveling by plane overnight and just can't get to sleep.
03:43And the first night in a hotel wasn't great, regardless of how comfy the bed was.
03:48This is because of a human evolutionary trait called the first night effect.
03:54When you sleep in a different place than your home, the left side of the brain responds to more sounds
04:00while you're asleep.
04:01It continues to analyze your surroundings without you realizing, acting as though it's on a night watch and keeping you
04:07alert for any potential dangers.
04:10Most animals have this trait, although it's a lot more subtle in humans.
04:15But it's still effective enough to make sure you get your peanuts.
04:20Before playing basketball with hoops, you would have instead been playing with peach baskets.
04:25When the game was invented in 1891, a peach basket was used, with the bottom of it cut off.
04:31But it only took 15 years for players to grow tired of constantly collecting the jammed balls and to remove
04:37the basket altogether.
04:39When you click your fingers, the snapping sound isn't from the physical click of finger and thumb.
04:45The noise actually comes from the finger hitting the palm.
04:50The instant film for the first Polaroid cameras didn't have their own coating after taking a photo.
04:55To develop it, you applied it yourself.
04:58Waiting for it to dry took a long time, so shaking it sped up the process.
05:03Then, from the 1970s, the film provided everything required for the photo to develop,
05:08making the popular craze of shaking Polaroids pointless.
05:12Shaking the photo can cause the ink to wave or blur before drying properly,
05:17so you shouldn't actually shake it like a Polaroid picture, and just wait patiently instead.
05:23Bug spray doesn't repel all bugs, especially the worst of them all, mosquitoes.
05:28It does cover the scent of carbon dioxide, which is what attracts mosquitoes.
05:33But the spray only protects you for a short distance.
05:37Mosquitoes can also track carbon dioxide over long distances.
05:41They will continue to stalk you until they find a gap in your invisible bug shield.
05:46A great alternative is lavender, which contains linalool.
05:51This fragrance completely overloads the mosquito's senses, making it unable to track you.
05:57The half-belt on the back of some jackets appear like a fashion accessory.
06:02It was initially designed that way for larger jackets,
06:04as they could also be used as a blanket to wrap around oneself.
06:09The belt's position helps hold the material together,
06:11so it's easier to walk with whilst keeping you warm.
06:16Ketchup wasn't originally intended to be your favorite condiment.
06:20In 1834, a physician, John Cook, sold ketchup as a cure for indigestion.
06:26It was an immediate hit, and today, 10 billion ounces are purchased annually in the USA,
06:33although not as the intended medicine.
06:37Thomas Edison made over 1,000 inventions,
06:40and one in particular, the lightbulb, is most famously linked to him.
06:44However, he didn't actually invent it.
06:47Warren Delarue, a British chemist, had solved this scientific challenge 40 years earlier.
06:53There were also 20 other inventors who made alternate versions before Edison did.
06:58But earlier varieties relied on cotton thread and only lasted up to 14 hours.
07:04Edison, in 1880, used a carbonized bamboo thread instead,
07:09and his worked up to 1,200 hours.
07:12It became the most commercially viable lightbulb,
07:14and today's ones are similarly shaped to Edison's original.
07:19The first treadmill was used in England in 1818.
07:23It was a large wooden cylinder with a handrail,
07:26although it wasn't used to keep fit.
07:29Convicted criminals would be forced to use these for up to 10 hours per day as a punishment.
07:35The energy output potential was realized,
07:38and soon it was built to work with water pumps and grain grinders.
07:42It was so effective that it was used in all prisons throughout the country.
07:46But in 1902, it was decided that it was too harsh and stopped.
07:50And now, this cruel punishment is mainly found in gyms.
07:55During the 1940s, there was a shortage of cocoa,
07:59and it was important to find a solution to this problem.
08:01A production company found a way by mixing only a small amount of cocoa with hazelnuts and milk,
08:08and the original Nutella was created.
08:11It started out as a loaf spread, like a stick of butter.
08:14It then transformed into a creamier version inside a jar in 1951.
08:19But it wasn't until 1964 that it was given its famous name.
08:24Your passport might be a dark shade of either green, blue, or red.
08:29The darker color not only makes them appear more official,
08:33but is intended so that through its journeys,
08:35the dirt that's collected is more easily hidden.
08:39Wasabi was first used back in the 8th century.
08:43It wasn't meant as a spicy condiment as it's served with sushi today.
08:47Initially, it was used for its antimicrobial properties
08:51that help avoid the harmful reactions to fish with sushi that's a bit too old.
08:59If you look at it on the street,
09:01you'll think a fire hydrant is about 3 feet in height.
09:03But the actual size of the device used to provide water supply to firefighters all over the world is twice
09:09as large.
09:10That is, if you count the rest of the hydrant, which is hiding underground.
09:13They're mostly red, and it's not just a matter of urban design.
09:17First of all, they need to be of bright, easily noticeable colors,
09:20so firefighters can spot them fast when they need to.
09:23The choice of color depends on how much water the hydrant can hold.
09:27It can sometimes vary depending on the location, but here's the breakdown.
09:31A red fire hydrant can splash 500 gallons of water per minute,
09:36while an orange one, at least 1,000 gallons.
09:40Green ones mostly process 1,500 gallons of water per minute,
09:44and the most plentiful ones, colored blue, can generally contain over 1,500 gallons.
09:50Hey bowling fans, isn't it super annoying when your bowling ball gets cracked?
09:54Turns out that most of them get damaged because of incorrect storage or spikes in temperature.
10:00Now come on and face it, since it's already cracked a bit,
10:03aren't you curious what's actually inside the bowling ball?
10:06Because I sure am.
10:07Let's have a look.
10:08They mostly make the inner core of the ball of powdered metal oxides,
10:12like calcium or iron oxide.
10:14They mix them with some resin and catalyst to harden the whole mixture.
10:18So that light bulb shape you now see inside of the ball is actually its heaviest part.
10:23It also influences how your bowling ball rotates when going down the lane.
10:28The same goes with spray paint cans.
10:30When you shake it, it makes a weird noise.
10:32But what is that thing in there?
10:34It's called a pea, and it's meant to hold the paint mixture in place and maintain its shape.
10:39They generally make it out of plastic, metal, or ceramic.
10:43It basically acts as a whisk to make sure your paint is well mixed together
10:47before you apply it to your surface of choice.
10:50Ever wondered how soda bottles keep that refreshing fizz for that long?
10:54Well, they have a little plastic ring fastened to the lid.
10:57They place it there to keep the gas from escaping and making the soda go flat,
11:02even if you shake it around in your bag the whole day.
11:06Speaking of things we use on a hot summer's day,
11:08wait, wait, don't put your baseball cap on just yet.
11:11Take a look at it for a minute, and you'll notice there's a small button on the very top.
11:15Is it functional, or is it just there for the sake of design?
11:19Way back when people started using fabrics to cover their heads,
11:22some say the button was actually functional.
11:25Since it's on top of the cap where the fabric panels come together,
11:28the top button helps keep the cap crown in one single piece.
11:32Now, with recent advances in fabric and pattern design,
11:36the button is more of an aesthetic feature.
11:38It's used to cover up the joint point of the fabric panels.
11:41Your cap might not have a button at all,
11:43but don't you think a cap actually looks better with one?
11:46Cotton pads have two sides,
11:48and if you take the time to look at them carefully,
11:51they're actually different in texture.
11:53Just in case you've ever wondered why,
11:55the textured side is for applying makeup,
11:57and the even side is for removing it.
12:01Bookworms, this one is for you.
12:03Dust jackets that come with a lot of hardcover books
12:05are not just meant to make your book look pretty,
12:07they also double as a bookmark.
12:10Just fold the pages you've already read underneath the inside of the jacket,
12:14and voila!
12:15Next time you reach out for your favorite shirt,
12:18take a look at the top buttonhole.
12:19It should be stitched horizontally,
12:21and all the other ones are vertical.
12:24Turns out that the dress shirt was designed this way,
12:26since the first and the last buttons
12:28were the first ones to unbutton throughout the day.
12:31They then changed the direction of the buttonhole
12:33to ensure the shirt would stay nice and fitted
12:35before you're ready to take it off.
12:39These days we have so many variations of this awesome dessert
12:42that it's hard to imagine we've ever lived without it.
12:44You can find different types of cookie dough ice cream
12:47or even chocolate chip cookie cake basically everywhere,
12:50but the famous cookie wasn't actually invented until 1930.
12:54The story goes that a woman named Ruth Graves Wakefield
12:57was preparing some chocolate cookies
12:59as she was waiting for some guests to arrive.
13:01She soon figured out she was out of baker's chocolate,
13:04a crucial ingredient for the classic cookies.
13:06To fix things up,
13:08she chopped up a block of semi-sweet chocolate,
13:11thinking it would eventually spread out evenly
13:12throughout the batter, given the heat of the oven.
13:15Things didn't necessarily go as planned,
13:17but hey, it's great they didn't
13:19because this is how she invented this modern dessert
13:21we now can't get enough of.
13:24And speaking of popular snacks,
13:26the potato chip is even younger than the chocolate chip cookie.
13:29Well, at least historically.
13:32There are many stories trying to explain how it was invented.
13:35One of them goes like this.
13:36A chef named George Crumb, based in New York,
13:40put the chips together in 1953.
13:42He decided to try a different cooking solution
13:45when one of his customers didn't have nice things to say
13:48about his french fries.
13:49He said they were too thick and kind of mushy.
13:52Then, Crumb came up with potatoes that were thinly sliced
13:55and fried until brown.
13:57People absolutely loved the dish
13:59and they welcomed the first ever batch of chips with open arms.
14:05Ice cream, anyone?
14:06If the story is true,
14:07back in 1904 at the St. Louis World's Fair,
14:10one ice cream shop owner ran out of cups to serve his dish.
14:14So, he fashioned a waffle into the shape of a cone
14:17and the rest was history.
14:19Okay, I'll admit it,
14:21chewing gum-like treats have been around since the ancient Greeks.
14:24So, this one isn't particularly a revolutionary discovery.
14:27But the actual gum we buy today
14:29wasn't there until the late 1800s.
14:32An American inventor named Thomas Adams
14:35wanted to mix together different chemicals to create rubber.
14:38He tried and failed, for that matter,
14:40to play with Chickle for his experiment,
14:42but ended up fashioning this neat treat.
14:44They still use Chickle to this day
14:46to produce most chewing gums.
14:49Back in the 1800s,
14:50there lived a man named Jean-Baptiste Jolie
14:52who worked in the fabric industry as a textile maker.
14:55How he came up with this next invention
14:58that we use a lot these days
14:59has less to do with him
15:00and more to do with his maid.
15:03The story goes that the woman
15:05accidentally knocked a kerosene lamp over
15:07onto a tablecloth.
15:08Instead of getting upset over the damaged fabric,
15:12Jolie noticed that the substance
15:13actually made the material cleaner,
15:15figured it out yet?
15:16Yep, that's how the idea
15:18for the very first dry cleaner popped up.
15:20A very neat accident,
15:22if I do say so myself.
15:24Now this one I loved.
15:26Did you know matchsticks
15:27were initially called friction lights?
15:29Or at least that's how their inventor,
15:32a chemist named John Walker,
15:33called them back in 1826.
15:36He scraped a stick coated in chemicals
15:39across his hearth,
15:40totally by accident one day,
15:41and realized that they ignited
15:43and created a spark.
15:45Initially made out of cardboard,
15:47they were then made
15:48using wooden splints and sandpaper.
15:52Back in the 1940s,
15:53a man named Harry Coover
15:54stumbled upon a chemical formulation
15:56that seemed to stick
15:57to everything it touched.
15:59The scientific community at the time
16:01didn't look much into it
16:02as the formula didn't seem
16:03to have many applications back then.
16:06It wasn't until 1951
16:08that he looked a bit more
16:09into the formula
16:10and decided to repurpose it,
16:12along with a fellow
16:13Eastman Kodak researcher
16:15named Fred Joyner.
16:16They gave it a proper full name.
16:18But you must know it
16:19by the shorter version,
16:21super glue.
16:23It also has many uses
16:25in security these days
16:26that it's hard to believe
16:27that we didn't come up
16:28with this one on purpose.
16:30Back in 1903,
16:31a scientist named
16:33Edward Benedictus
16:34knocked over a flask
16:35by accident.
16:36He looked down
16:37and was amazed to see
16:38that the glassware
16:39had just slightly cracked
16:40but maintained its shape.
16:42He was expecting it
16:43to break into
16:44a million tiny pieces.
16:46Curious about this hidden feature,
16:47he looked into it
16:48and figured out
16:49what was keeping
16:50the glass together
16:51was a substance coating
16:52the inside of the glass.
16:54Ta-da!
16:54That's how humanity
16:55came up with safety glass.
16:59You know,
17:00there are all sorts
17:02of amazing things
17:03you can do with products
17:04already lying around the house
17:06that were meant
17:07for other things.
17:08We'll explore some of those
17:10plus everyday items
17:12that have other purposes
17:13you may not be aware of.
17:15I'm also in a silly mood,
17:17so hey,
17:17let's have some fun.
17:19Many pairs of kitchen scissors
17:21today have a serrated opening
17:23where the handles
17:24and blades meet.
17:25You can use this
17:26as an herb stripper
17:27to de-stem difficult herbs
17:29like thyme,
17:30rosemary,
17:31and chives.
17:32Saves you a lot of time
17:33trying to pick
17:34the leaves off by hand.
17:36And if you're short of a vase,
17:38you could present roses
17:39to your significant other
17:40this way.
17:41Just be careful
17:42when you're pointing
17:43the sharp end.
17:45The metal tab on soda cans
17:47can be flipped around.
17:48You can slip a straw in place
17:50so you don't have to
17:51hold it up to your mouth.
17:52This stay-on tab
17:54replaced the pull ring tab
17:55created in the early 60s.
17:57You remember those,
17:58don't you?
17:59Those could be quite sharp
18:01and easily discarded
18:02where they could be
18:03a menace for others.
18:05Now,
18:05you can pop your straw
18:07straight into one.
18:08Also means
18:09you can produce some bubbles
18:10and make a mess.
18:13Sometimes,
18:13when you purchase
18:14an article of clothing,
18:15you receive a plastic baggie
18:17with an extra button
18:18and a swash of fabric.
18:20While the fabric
18:21is clearly used
18:22to patch holes,
18:23it can also be used
18:25to test the effects
18:26of various cleaners
18:27on certain surfaces.
18:28It's handy, too,
18:29to test wash cycles
18:31before using them
18:32to wash the whole garment.
18:34And,
18:34if you want to clean
18:35your nose with it,
18:36that suggestion
18:37never came from me.
18:39You can use a screwdriver
18:41for leverage
18:42if you're having trouble
18:43lifting or moving something.
18:45Some also have
18:46a hexagonal shape handle
18:48that fits inside
18:49a wrench or spanner.
18:50You can use it
18:51to improve torque
18:52and, again,
18:53for leverage.
18:54A little easier
18:55on your hands.
18:56Some of us
18:57aren't that strong.
18:58Or,
18:58maybe that's just me.
19:00Rubber bands
19:01are great for many things.
19:03But,
19:03if you have a bottle
19:04that's hard to open,
19:05you can wrap the band
19:06around it
19:07for a better grip.
19:10Escalators
19:10have those
19:11fluffy black brushes
19:12for a similar reason
19:14that some have
19:15yellow lines
19:15on their steps.
19:16To try and deter people
19:18from getting too close
19:19to dangerous places,
19:21people don't always
19:22take notice,
19:22and sometimes,
19:23clothing can drape
19:24close to a point
19:25where the step
19:26meets the edge
19:27or skirt.
19:28The brush
19:29is a little barrier
19:30to help prevent
19:31this from happening.
19:32They can also
19:33catch bits of fluff
19:34and prevent
19:35other small things
19:36from falling down
19:37into the gaps.
19:39Your average pair
19:40of jeans
19:41has several features
19:42that are both functional
19:43and somewhat sentimental.
19:45The meadow rivets
19:47around the pockets
19:47help secure
19:48the stress points.
19:49This ensures
19:50they last a bit
19:51longer than average,
19:52though not all jeans
19:54have them.
19:55Many still have
19:56a tiny pocket
19:57directly above
19:58the main pocket.
20:00This was originally
20:01meant to hold
20:02a pocket watch.
20:03Even though pocket watches
20:04are mostly a thing
20:05of the past,
20:06many people still
20:07use this space
20:08to store coins,
20:09rings,
20:10or even a portable USB.
20:13Now,
20:14this may seem
20:15a little obvious,
20:15but if you've ever
20:17wondered what all
20:17the notches are
20:18in a car tire,
20:20it's for traction
20:21on the road.
20:22However,
20:22there are also
20:23a good indicator
20:24if your tire
20:25is getting too worn down.
20:27If those notches
20:28aren't so deep anymore
20:30and are almost
20:31flush with the road,
20:32it's time
20:33to replace them.
20:34If you don't,
20:35the next time
20:36you try to stop
20:36suddenly at a stop sign,
20:38you might be surprised
20:40to find your car
20:40has turned
20:41into a giant roller skate.
20:44Those takeaway containers
20:45most associated
20:46with Chinese restaurants
20:48are designed
20:49to not only
20:50carry your food home,
20:51but to store them
20:52in the fridge.
20:53They double as a plate
20:55as you can eat
20:56straight out of them
20:57and don't have to worry
20:58about dirty dishes.
20:59Yay!
21:00They were actually
21:01patented
21:02way back in 1894
21:04to transport
21:05freshly shucked oysters
21:06and were known
21:07as oyster pails.
21:09They were later
21:10adapted to use
21:11as leak-proof containers
21:12for food.
21:14While you're sitting
21:15on an airplane
21:16and looking out the window,
21:18you may have noticed
21:18those little holes
21:20or, in some instances,
21:21a small singular opening
21:23near the bottom.
21:24This is called
21:25a breather hole
21:26and, no,
21:27it's not for you.
21:28It's designed
21:29to equalize
21:30the difference
21:30in air pressure
21:31which builds up
21:32between the pressurized cabin
21:33and the atmosphere outside,
21:36especially during
21:36high altitudes.
21:38It also releases
21:39moisture from
21:40between the panes
21:41to avoid frost
21:42from forming
21:43on the windows
21:44and obstructing
21:45that all-important view.
21:47Sorry,
21:48but it looks like
21:48you won't be drawing
21:49a smiley face
21:50on it anytime soon.
21:52This was first introduced
21:54way back in 1956
21:55by a company in Japan.
21:57Pretty cool, huh?
21:59They got their inspiration
22:00from snap-off rows
22:02on chocolate bars.
22:03Just don't get
22:04the two mixed up.
22:05One doesn't taste good.
22:08When it comes
22:09to measuring tape,
22:10almost every reel
22:11has an empty slot
22:12in the metallic end.
22:14This is called
22:14a nail grab,
22:15so you can attach it
22:17to a nail or screw.
22:19A handy trick
22:20to do measurements
22:21without requiring
22:22someone else
22:23to hold it in place.
22:24Ooh,
22:25very nifty.
22:27Bobby pins
22:28have grooves
22:28on one side
22:29to hold your hair
22:30in place better.
22:31Crazy notion, huh?
22:32The straight side
22:34goes face up
22:35while the grooves
22:36go down
22:37against your head.
22:38They're called
22:39bobby pins
22:39because of the
22:40bobbed hairstyle
22:41which was popular
22:42in the 1920s,
22:44though the pins
22:45were invented
22:45in the 19th century.
22:47The look is gone,
22:48but the pins remain.
22:50Please take them out
22:51before you wash your hair
22:53as they don't look great
22:54stuck to your fingers.
22:56If you've been in a car
22:58or a bus
22:58and noticed
22:59the textured black dots
23:01baked into the black edges,
23:02you've probably worked out
23:04that it's not there
23:05for its pretty looks.
23:06It's called
23:07FRIT,
23:08a ceramic paint.
23:09Its main purpose
23:10is to protect the window
23:12from ultraviolet rays.
23:13It also creates
23:15a rough surface
23:15for the adhesive
23:16to cling to.
23:18Now,
23:19if you see
23:19a pink lump
23:20of adhesive
23:21in the corner,
23:22please do not touch it.
23:24It's actually
23:24someone's old bubble gum.
23:27If you take a look
23:28at the bottom
23:29of the lock,
23:30chances are
23:31you'll see
23:31one or two
23:32little holes.
23:33This is to let water
23:34out from the inside
23:35that may have been trapped
23:37due to rain.
23:38This mini-draining capability
23:40prevents the inner working
23:41from rusting over
23:43or freezing in place
23:44if the weather's very cold.
23:46If, in another situation,
23:48the lock becomes stuck,
23:50you can ease
23:51an oil-based product
23:52inside
23:53to lubricate the lock
23:54and get it working again.
23:57If you've lost the key
23:59and want to ease
24:00your frustrations,
24:01you can yell
24:02into the holes.
24:03It won't do anything
24:04to unlock it,
24:05but it may help you
24:06feel a little better.
24:08Some dress shirts
24:09have a fabric loop
24:10on the back.
24:11You guessed it,
24:12it's used for
24:13hanging the shirt up.
24:14The loops were reportedly
24:16first used in the Navy,
24:18as it was easy
24:19to simply hang them
24:20on the wall.
24:21During the 1960s
24:23in colleges,
24:24the fashion of the day
24:25was to wear the shirt
24:26buttoned all the way
24:27to the top,
24:28which made them
24:29difficult to hang.
24:30So designers began
24:31putting the loop
24:32on the back.
24:33If the student
24:34removed the loop,
24:35it signified that
24:36they were going steady
24:37in a relationship.
24:39Unless your friend
24:40ripped one off
24:41for a prank,
24:42now everyone's asking
24:43whom you're with.
24:45There's a little more
24:46to this story,
24:46but we haven't got time
24:47to hang around.
24:50And yes,
24:51that's a bad pun.
24:52On purpose.
24:53It's what I do.
24:55Ever wondered why
24:56coins have those
24:57little ridges
24:58along the edge?
24:59It's a leftover
25:00from earlier times
25:01when they were worth more.
25:03Counterfeiters
25:04could easily file
25:05the edges off
25:06to sell as gold
25:07or silver coins
25:08to make some profit.
25:10The ridges were created
25:11so it was much easier
25:12to tell which of the coins
25:14had been altered.
25:15It's not needed today,
25:17but the coins still have
25:18that altered style.
25:19If you ever get
25:20really bored,
25:21you could try counting
25:23how many ridges
25:24there are.
25:25Actually,
25:25that is a very boring idea.
25:27Forget that
25:28and watch another
25:29Bright Side video instead.
25:34Tires on the landing gear
25:36don't burst
25:36because they're designed
25:37for a load
25:38that's four to five times
25:40as great as they experience
25:41during landing.
25:42The wheel itself might break,
25:44but the tire won't burst.
25:46This little tip
25:47based on people's psychology
25:48can help you choose
25:49the fastest line
25:50at the airport.
25:51If there are several lines
25:53at check-in,
25:54opt for the left one.
25:56It's believed that you'll get
25:57to the counter
25:58more quickly this way.
25:59Most people are right-handed
26:01and intuitively choose
26:02the right side.
26:04Your skin usually becomes
26:06a bit dry during the flight.
26:08This happens because of
26:09low humidity levels
26:10in the cabin.
26:11Bring a good moisturizer
26:13with you to keep your skin
26:14hydrated on board.
26:16Do you know that airplane pilots
26:18always eat different meals
26:20before a flight?
26:21This way,
26:22if one of them gets food poisoning,
26:24the other will be able
26:25to take control of the plane.
26:27Airplane tray tables
26:28are some of the dirtiest surfaces
26:30in the cabin,
26:31so make sure to wash
26:32your hands frequently
26:33and clean that table
26:35with an antibacterial wipe
26:36to get rid of all those
26:37bacteria living there.
26:39If you're sitting in an aisle seat,
26:41you can have more space
26:42to stretch your legs out.
26:44Just push the button
26:45on the underside
26:46of the outermost armrest.
26:47This will move the armrest up,
26:49giving you more space
26:50for your legs
26:51and preventing the armrest
26:53from jabbing into your side.
26:55Here's a reason why
26:56they turn the lights off
26:57in the cabin.
26:58Passengers need to get used
27:00to the darkness
27:00in case an emergency landing
27:02happens at night.
27:03This way,
27:04their eyes are already used
27:06to the absence of light,
27:07which makes it easier
27:08to evacuate.
27:09Flight attendants ask you
27:11to open window shades
27:12so they can see
27:13what's happening outside.
27:15This way,
27:16they can choose
27:17the best way
27:17to evacuate passengers
27:19in case of an emergency.
27:21Almost all passenger planes
27:22are white
27:23since this color
27:24best reflects the sun's rays
27:26and prevents the plane
27:27from heating up.
27:29Another good reason
27:30is that white paint
27:31is cheaper.
27:32Also,
27:32workers and engineers
27:34can easily notice
27:35any damage
27:35on a white surface.
27:37It's better to avoid
27:38making important decisions
27:39during a flight.
27:41Your brain doesn't get
27:42enough oxygen
27:43at such heights.
27:44This negatively affects
27:46its functioning.
27:47Chewing gum,
27:49hard candies,
27:49and mints
27:50can help you to avoid
27:51this annoying ear-popping
27:52during take-off
27:53and landing,
27:54but not because
27:55of the candy itself.
27:56You feel better
27:58thanks to the process
27:59of swallowing.
28:00Yawning helps, too.
28:02As for the gum,
28:03it also helps get rid
28:04of that bad breath
28:05caused by the thin air
28:07at high altitudes,
28:08which pulls moisture
28:09right out of your body.
28:11Dry air can make you feel
28:13as if you're coming down
28:14with a cold.
28:15The air in the cabin
28:16dries out your nose
28:17and throat,
28:18as if you have symptoms
28:19of a cold.
28:20These symptoms usually
28:21go away right after landing.
28:24The water they use
28:25to make coffee
28:26and tea on board
28:27isn't always clean enough.
28:29Yeah, many companies
28:30use very good
28:31water filters now,
28:32but still,
28:33it's better to ask
28:34for bottled water
28:35if you're thirsty.
28:37That tiny triangle
28:38on the aircraft wall
28:39over your seat
28:40means a lot
28:41for flight attendants.
28:42These triangles
28:43mark the windows
28:44through which you can
28:45see flashing indicators.
28:47Those signal
28:48the retraction
28:48of the landing gears
28:49and the closing
28:50of the flaps.
28:51Let's say the pilots
28:53find out there's
28:53some problem.
28:54In that case,
28:55a flight attendant
28:56rushes to the necessary
28:57window to check
28:58what's happening.
28:59But for passengers,
29:00this is just the best
29:01place for photos
29:02since you can see
29:03the wings perfectly.
29:05Seats in the middle
29:06of the cabin
29:06above the wings
29:07are the best for you
29:08if you have motion sickness.
29:10This area is more balanced
29:12and shakes the least
29:13during turbulence.
29:14If you tend to get nervous
29:16during the flight,
29:17do some physical exercise
29:18not long before
29:19boarding the plane.
29:20A little workout
29:21helps lower
29:22your stress levels
29:23and makes your body
29:23release endorphins,
29:25the happiness hormones.
29:26Also,
29:27this physical activity
29:28compensates for the hours
29:30you spend sitting still.
29:32The turbines
29:32are located
29:33under the wings
29:34since this makes it
29:35cheaper,
29:36faster,
29:36and easier
29:37to service the engines.
29:39Previously,
29:40they used to be
29:40placed in the tail.
29:42It required
29:42expensive equipment
29:43and much more time
29:44to repair.
29:45When they started
29:46installing the engines
29:47below the wings,
29:49ticket prices went down.
29:51Imagine you're flying
29:52in a hot air balloon.
29:53See the burner system
29:54installed under the gas bag,
29:56also called the envelope?
29:57It heats the air inside,
29:59which makes the balloon go up.
30:01So,
30:02turbulence is the same hot air
30:03but created by nature.
30:05When the air heats up,
30:06it rises a plane.
30:08When it becomes cooler,
30:09the aircraft goes down.
30:11And passengers feel
30:12as if they're riding
30:13a roller coaster.
30:14A stream of hot air
30:16left by another plane
30:17can also cause turbulence.
30:18It's common for most flights,
30:20but usually,
30:21turbulence is so light
30:22that passengers
30:23don't feel it.
30:24Do you know
30:25that planes can fly
30:26even after one engine fails?
30:28Pilots can control
30:29such emergency situations
30:31and land the aircraft safely.
30:33Passengers may feel
30:34a slight tilt
30:34during the flight,
30:35but in most cases,
30:36they don't even know
30:37the plane is flying
30:38with only one engine.
30:40Your eyes get oxygen
30:41straight from the air.
30:42It's not delivered
30:43by the blood,
30:44so your eyes can feel
30:45somewhat dry
30:46during the flight.
30:47Put eye drops in your bag.
30:49They'll help you
30:49keep your eyes moist.
30:51It's forbidden
30:51to carry large volumes
30:53of liquids on board
30:54because some hazardous
30:55substances can easily
30:57dissolve in water.
30:58If a plane has to land
31:00on water,
31:00its wings become
31:01a life-saving pillow.
31:03Empty fuel tanks
31:04help the aircraft
31:05stay afloat, too.
31:06By the way,
31:07it can be from 10 minutes
31:08to 60 hours
31:09before the plane sinks.
31:10It all depends
31:11on the model,
31:12weather conditions,
31:13and the pilot's skills.
31:15Those smiling flight attendants
31:16you meet when you
31:17get into the cabin
31:18usually hide their hands
31:19behind their backs.
31:21They're counting people
31:22entering the plane
31:23to make sure that
31:23all passengers are on board.
31:26Despite all the words
31:27people say about
31:27airplane food,
31:28it's not actually so bad.
31:30The problem
31:31is your sense of taste.
31:32It's not so acute
31:33since the air in the cabin
31:34makes your mouth dry.
31:36It also dulls
31:37your sense of smell.
31:38That's why airlines
31:39add a lot of spices
31:40and salt to their meals.
31:42Is it true
31:43that your hair grows faster
31:44during the flight?
31:45Not really.
31:46Scientists haven't managed
31:47to prove it.
31:48This myth
31:49appeared in the first part
31:51of the 20th century
31:52when some passengers
31:52noticed that their stubble
31:54had grown longer
31:55during the flight.
31:56It's normal for people
31:57to get headaches
31:58during the flight,
31:59especially right after takeoff.
32:01You climb to an altitude
32:02higher than Mount Everest
32:04within about 10 minutes.
32:05These changes happen
32:06too fast for your body
32:08to adjust.
32:09Seatbelts on planes
32:10stretch across your stomach
32:11to save you
32:12from getting slammed
32:13against the ceiling
32:14in case of turbulence.
32:15When it happens,
32:17the aircraft starts
32:18moving up and down
32:19and your waist belt
32:20holds you securely.
32:22And seatbelts in cars
32:23protect people
32:24from horizontal collisions.
32:26Airplanes have
32:27special protection
32:28from lightning.
32:29Even if it strikes,
32:30passengers won't feel it.
32:31Planes are covered
32:33with an aluminum coating
32:34that conducts electric current
32:36but doesn't let it
32:37get inside the plane.
32:38Electronics and fuel tanks
32:40also have extra protection.
32:42Plane seats are so uncomfortable
32:44because airlines try to fit
32:45the maximum number
32:46of passengers on the plane.
32:48That's why there's
32:49so little space
32:50between seats.
32:51Two additional rows
32:53means 12 more passengers.
32:55Also, companies make
32:56airplane seats lighter
32:57to save on fuel costs.
32:59Even seemingly insignificant
33:01extra weight
33:02can cost an airline
33:03thousands of dollars.
33:05And, by the way,
33:06your seat has a fire-resistant coating.
33:08It's necessary to prevent
33:10a fire from spreading
33:11in case of an accident.
33:13Airport workers
33:14transport unclaimed luggage
33:15to special centers.
33:17If the owner doesn't show up
33:18within three months,
33:20the baggage is put up for sale
33:21in specialized stores.
33:23You couldn't use your phone
33:24on an airplane in the past
33:26since cell phones
33:27were really dangerous
33:28for navigation.
33:29Their radio signals
33:30could disrupt the settings
33:31in aircraft electronics.
33:34Oxygen masks fall down
33:35not only during
33:36strong turbulence,
33:37but also when the air pressure
33:38inside the cabin
33:39changes dramatically.
33:41Passengers are okay
33:42if they put on
33:43their oxygen masks,
33:44but in such cases
33:46are considered
33:46to be an emergency.
33:47And pilots do their best
33:49to quickly go down
33:50to a safe altitude
33:51so that passengers
33:52can breathe
33:53without oxygen masks.
33:57Ladies and gentlemen,
33:59please welcome
33:59our special guest today,
34:01the garbage bag.
34:03Canadian inventors
34:04created this irreplaceable
34:05household item
34:06about 70 years ago.
34:08Today, it comes in
34:09a huge variety of shapes,
34:11colors, and sizes.
34:12And if you think
34:13it can only serve
34:13one basic purpose,
34:15I have a big surprise for you.
34:17It can even prevent you
34:18from unwanted communication.
34:20But more on that later.
34:21What if I told you
34:22that you've been using
34:23your garbage bags
34:24wrong your entire life?
34:25If you take a closer
34:27look at it,
34:27you'll probably notice
34:29that the seam is inside out
34:30and it's not by accident.
34:32In fact,
34:33you're not supposed
34:33to shake up the bag
34:34to open it.
34:35You gotta place the bag
34:36over a garbage can
34:37like a hat
34:38and then just push
34:39the middle of the bag
34:40down to the can.
34:41No worries,
34:42you're not the only person
34:43who didn't know that.
34:44This eye-opening trick
34:45went viral online
34:47and got millions of views.
34:49Imagine that you need
34:50to dye your hair,
34:51paint walls,
34:52or mold a clay mug immediately.
34:53But you don't have
34:54a protective suit on hand.
34:56Here comes the good news.
34:57You can make one
34:58out of a plastic bag.
34:59It will take you
35:00less than a minute.
35:01Just find a bag
35:02wide enough
35:03to fit your torso.
35:04Cut one hole
35:05in the bottom of the bag
35:06for your head
35:06and make two holes
35:07for the arms on the sides.
35:09Voila!
35:09Feel free to make a hat
35:11from another plastic bag
35:12to protect your hair.
35:13When the job is done,
35:15you can wash this
35:15handmade suit
35:16and reuse it.
35:18Our next hack
35:19is for those
35:19who don't like
35:20to waste money.
35:21You can use
35:21a real plastic bag
35:22instead of a raincoat
35:23that looks like
35:24a plastic bag anyway.
35:25Just make a round cut
35:26for your face
35:27and you're ready to go.
35:28You can reuse it
35:29as many times
35:30as you want.
35:31You can use
35:32a plastic bottle
35:33to create
35:33a recycled bag dispenser.
35:35Take a large bottle.
35:37It can be either
35:37a bottle of soda
35:38or washing gel.
35:40What matters
35:40is its shape.
35:41It must be straight
35:42so you can easily
35:43store bags inside it.
35:45Wash the bottle,
35:46dry it,
35:46and cut off
35:47the bottleneck
35:47and bottom.
35:48Turn it upside down.
35:50There you go.
35:50Your bag dispenser
35:52is ready.
35:53You can use
35:53your imagination
35:54to paint and decorate
35:55your DIY project
35:56with stickers
35:57and lettering
35:58to your taste.
35:59When the design
36:00is ready,
36:01attach it to the back
36:02of the bottle
36:02and stick this holder
36:03to the wall
36:04in your kitchen
36:05or one of the cabinet doors.
36:07Imagine you've been
36:08planning a perfect
36:09hiking weekend
36:09for ages,
36:10but when you actually
36:11get there,
36:12it starts raining.
36:13Don't rush back home.
36:14Plastic bags
36:15will serve you well
36:16if you need to put
36:17your clothes
36:17or equipment
36:18on wet grass.
36:19Also,
36:20you can make an emergency
36:21sleeping bag cover
36:22using a large garbage bag.
36:24After the rain,
36:25it will serve
36:25as a nice mattress
36:26to lay under
36:27your sleeping bag
36:27to protect it
36:28from moisture
36:29and provide
36:30an additional layer
36:31for a cozy nap.
36:32Just fill the bag
36:33with some soft leaves
36:34and straw
36:35that lie on the ground
36:36and there you go.
36:37A large garbage bag
36:39can be your best friend
36:40when you're camping
36:41with friends
36:41somewhere in the wild.
36:42You can turn it
36:43into a temporary
36:44handmade shower,
36:46toilet,
36:46or even a dressing room
36:47out of it.
36:48Just hang it on the tree
36:49and no one will spy on you.
36:51If you went for a walk
36:53wearing a pair
36:53of your favorite shoes
36:54that get wet easily,
36:55here's an easy tip
36:56to keep your socks dry.
36:58Put plastic bags
36:59over your socks,
37:00tuck the edges
37:01of the bags
37:01into your socks
37:02or trousers,
37:03and then put your shoes on.
37:05There's one obvious
37:06drawback though.
37:07Feet can slip
37:08inside the shoes,
37:09so be careful.
37:10These plastic socks
37:11are also handy
37:12when you're trying
37:12to put on tight jeans
37:13that usually make
37:15your feet stick
37:15inside them.
37:17Have you ever had
37:18your bag torn
37:19at the worst possible moment?
37:20A plastic bag
37:21with handles
37:22can become
37:22an emergency backpack.
37:24Just place your stuff
37:25inside the bag,
37:26put your hands
37:27through the handlers,
37:27and you're ready to go.
37:29A garbage bag
37:30is also a good material
37:31for book covers.
37:32You can reuse
37:33multicolored bags
37:34to create a unique
37:35pattern for your favorites.
37:37You're moving
37:38to a new house
37:39and packing
37:39all your belongings.
37:40Suddenly,
37:41you run out of boxes.
37:43Sounds familiar?
37:44No problem.
37:45Grab a package
37:46of large garbage bags
37:47and pack
37:48the remaining stuff.
37:49Unlike boxes,
37:50this packaging
37:51will protect
37:51your property
37:52from rain or snow.
37:54Garbage bags
37:54are especially good
37:55for packing blankets,
37:57pillows,
37:58and stuffed toys.
37:59If you need
38:00to make a vacuum packing
38:01for your clothes
38:02or stuffed toys,
38:03simply put your belongings
38:04in a trash bag,
38:05place a tube
38:06from your vacuum cleaner
38:07inside the bag,
38:08and then turn it on.
38:09The vacuum
38:10cleaner will remove
38:11all your excess hair
38:12from the bag,
38:13and you'll save space
38:14in your suitcase
38:15or basement.
38:16Someone really special
38:17has invited you home
38:18to cook a romantic
38:19dinner together.
38:20Finally,
38:21you want to show
38:22all your extraordinary
38:23cooking skills,
38:24but your special someone
38:25doesn't have an apron,
38:26and you don't want
38:27to mess up
38:28your new outfit.
38:29No worries.
38:30Make an emergency apron
38:31using a large garbage bag.
38:32It will surprise
38:34that special someone
38:35even more.
38:36Speaking of stylish outfits,
38:38are you familiar
38:39with the term
38:40garbage bag dress?
38:41Celebrities and famous
38:42fashion brands
38:43shock the audience
38:44with outfits looking
38:45like trash bags
38:46from time to time.
38:48Some of them
38:48actually make outfits
38:49using garbage bags
38:50like fabric.
38:51It's a popular option
38:52for young artists
38:53who can't afford
38:54to buy and use
38:55expensive fabrics.
38:56Garbage bags
38:57are very flexible,
38:59so they are a useful
39:00material for making
39:01patterns for future outfits.
39:03When it comes
39:04to garbage bags,
39:05the DIY project's
39:06possibilities
39:07are almost infinite.
39:08People use bags
39:09to make lampshades,
39:11clothes covers,
39:12small cosmetic bags,
39:13makeup organizers,
39:15recycled glasses,
39:16and whatnot.
39:17Some even weave baskets,
39:18bags, and floor rugs
39:20out of them.
39:20It's pretty easy
39:21to handcraft a rug.
39:23You need to cut
39:23several bags
39:24into equal strips
39:25and weave a long braid
39:26from these strips.
39:28Now twist this braid
39:29into a spiral
39:30and tie or glue
39:31each layer together.
39:32To secure
39:33this entire construction
39:34from breaking,
39:35you can screw your rug
39:36on a sewing machine
39:37from the middle
39:37to the edges,
39:38as if you're drawing
39:39a star.
39:40This plastic braid
39:41can also serve
39:42as emergency laces,
39:43a rope,
39:44or a handmade ribbon
39:45for decorating gifts
39:46and flowers.
39:47Filmmaking is another
39:49yield where garbage bags
39:50can be real stars.
39:51If you're shooting
39:52indoors and the sunlight
39:53is too sharp,
39:54you can put white
39:55garbage bags on all
39:56windows to diffuse
39:57the light or to set
39:58the white balance.
39:59Black light-proof garbage
40:01bags may serve you
40:02as a shading curtain
40:03to get rid of the sunlight
40:04in the room whatsoever.
40:05Feel free to use
40:06a white bag
40:07to create a diffuse
40:08light bulb.
40:09Enflate the bag
40:10like a balloon
40:10and put it next to a lamp.
40:12But make sure to use
40:13an LED light
40:14so it doesn't get too hot.
40:16Everyone knows
40:16that touching a plastic bag
40:18with a hot iron
40:19is a bad idea
40:20because it will melt.
40:21But this lets us
40:22create unique shapes
40:24from this colorful
40:24and affordable material.
40:26Want to make
40:26a unique designer vase?
40:28Take a bowl
40:29and cover it
40:30with paper tightly.
40:31Then wrap the matching strips
40:32of plastic bag
40:33around the bowl.
40:34Now place another layer
40:35of paper on the top
40:36and gently iron over
40:38the entire surface
40:39of the bowl.
40:40Voila!
40:40The plastic's melted
40:42and you've got
40:42a new stylish
40:43and eco-friendly vase.
40:45Garbage bags
40:46can produce
40:47very cool sound effects.
40:48If you live in a desert
40:49where it never rains
40:50and need to recreate
40:51that relaxing sound,
40:53use a plastic bag.
40:54It's always better
40:55to speak up
40:56like an adult.
40:57But if that doesn't
40:58work for you,
40:59here's a quick fix.
41:00Next time
41:01some annoying person
41:01calls you,
41:02don't bother to make excuses
41:04why you can't talk
41:05right now.
41:05Just grab a garbage bag
41:07and rustle it
41:07into your phone speaker
41:08yelling,
41:09Hello?
41:10Hello?
41:10I can't hear you!
41:12Confession time!
41:13Have you ever used
41:14this trick?
41:15Whether it's something
41:17as simple as a button
41:18on your jeans
41:19or something that's part
41:20of a larger moving mechanism,
41:22here are 26 secrets
41:24to everyday things
41:25you probably didn't know about.
41:28You use doorknobs
41:30every day
41:30so it's right
41:31to be concerned
41:32about how many germs
41:33could be on them.
41:34However,
41:35they have made doorknobs
41:36out of brass
41:37partly for that reason.
41:39Brass provides
41:40an antimicrobial effect
41:42eliminating the microorganisms
41:44that were hoping
41:44to start a colony
41:45on your doorknob.
41:47Your pants have
41:48that one-fifth pocket
41:49that's recognized
41:50as the small useless one.
41:52Originally,
41:53it was there
41:54to provide a safe place
41:55for your pocket watch,
41:56something that was necessary
41:57when first implemented
41:58in 1901.
42:00It then continued
42:01to remain
42:01for traditional purposes.
42:03However,
42:03it's still a great place
42:04to put your Tic Tacs.
42:06You've probably mistaken
42:08those little rivets
42:09on your jeans
42:10as some form
42:11of fashion statement,
42:12similar to the small pocket.
42:14In fact,
42:14they're incredibly important.
42:16They are there
42:17to provide extra support
42:18for areas that withstand
42:20the most strenuous
42:21parts of your clothing,
42:22preventing them
42:23from embarrassingly
42:24falling apart.
42:26That little button
42:27at the end
42:28of your seatbelt
42:28seems like it's
42:29way out of place.
42:30In fact,
42:31it's there to ensure
42:32your buckle will always
42:33remain at the end,
42:34so you won't have
42:36to awkwardly fiddle
42:37with your seatbelt
42:38every time you put it on.
42:40You're in a new car
42:41or a rental,
42:42and the gauge tells you
42:43the gas is getting low.
42:45You don't know
42:45which side the fuel cap
42:46is on from the inside.
42:48It can cause
42:49unnecessary effort
42:50at the gas station.
42:51However,
42:52your fuel gauge
42:53has an arrow
42:54that reminds you
42:55which side
42:55to fill your gas tank
42:56up from.
42:57Some models of cars
42:59may also have
43:00a gas tank hose instead,
43:02with the hose pictured
43:03on the side
43:04that the cap is on.
43:06Hiking and walking
43:07through snow
43:08requires the best
43:09kind of footwear.
43:10The shoes,
43:11which are perfect for this,
43:13also have an extra eyelet
43:14for your lace
43:15to loop through.
43:16Looping your laces
43:17through the extra eyelets
43:18will give more support
43:19for your ankles
43:20and feet
43:21and will provide
43:22more stability
43:23as you walk.
43:24But as you walk,
43:26blisters are also a concern.
43:28The sweat in your shoe
43:30creates friction
43:31between the feet
43:32and the shoe,
43:33which then helps
43:34create the blisters.
43:35Antiperspirant
43:36that you use
43:37for your armpits
43:38will help keep
43:38the feet from sweating.
43:40Just make sure
43:41you use the clear one.
43:43Cooking for people
43:44is always nice.
43:45However,
43:46sometimes the guests
43:48are late.
43:48Yep,
43:49we're all guilty
43:50of that sometimes,
43:51right?
43:52The extra drawer
43:53under your oven
43:54where you've been
43:55keeping all of your
43:56spare pots and pans
43:57was actually made
43:58to keep your food warm.
44:00Great for those
44:01who are late to the meal.
44:03Ever wondered
44:03how long that padlock
44:05could possibly last
44:06when it's outside,
44:07in the rainy weather,
44:08keeping your bike safe?
44:10It has a little hole
44:11at the bottom of it.
44:13It's there to drain water
44:14to avoid corrosion
44:15on the inside.
44:17It also serves
44:18to provide oil,
44:19further prolonging
44:20its use.
44:21That hole
44:22in the elevator door
44:24isn't there
44:24to check who's inside
44:26so you can avoid
44:27sharing a ride
44:27with specific people.
44:29It's a keyhole
44:30in case it breaks down.
44:33Ketchup,
44:34sauce bottles,
44:34and all other condiments
44:36we love
44:36all have a stage
44:37when it's difficult
44:38to get the insides out.
44:39You try hitting it,
44:41shaking it,
44:42and poking things inside
44:43to encourage
44:44the tasty condiments
44:45to come out.
44:46Luckily,
44:47there is an easier way
44:49to do it.
44:50The label at the top
44:51suggests where to tap the bottle.
44:53The sauce will come out
44:55easier and smoother,
44:56allowing gravity
44:57to take the place
44:58of frustration.
45:00The purpose
45:01of wooden coat hangers
45:02is to help repel
45:03pesky insects
45:05and avoid fungal growth
45:06that eats away
45:07at your clothing.
45:08As it's made
45:09of cedar wood,
45:10it contains oils
45:12that have insecticidal
45:13and fungicidal properties
45:15and were used
45:16as far back
45:17as the ancient Egyptians,
45:18although
45:19they used it
45:20for other purposes.
45:22We've all been trained
45:24and tested
45:24at the art of typing
45:26and know the correct way
45:27to use a keyboard.
45:28But you may not
45:30have noticed
45:30that the F
45:31and J keys
45:32have a small ridge
45:33at the bottom.
45:34They're there
45:35to help you find
45:36your correct starting place
45:37with your fingers
45:38on the keyboard
45:39without having
45:40to look down.
45:41If you've been lucky enough
45:43to get the window seat
45:44on the plane,
45:45you would have noticed
45:46that little hole
45:47at the bottom of the window.
45:48It helps with the air pressure
45:50on the plane.
45:51The window itself
45:52is made from acrylic
45:53and isn't actually glass,
45:55which saves it
45:56from fogging up
45:57so you can see
45:58the scenery
45:58on your journey.
46:00The windows on planes
46:01were originally square.
46:03However,
46:04they would continuously break
46:05from the constant changes
46:06in pressure.
46:07round windows
46:08are able to evenly
46:09distribute the pressure,
46:11ensuring you'll have
46:12a pleasant journey
46:12without falling out.
46:14For all you
46:15Nintendo Switch players,
46:17those who have tried
46:18to taste your cartridges
46:19will notice
46:20they have a bitter taste.
46:21The manufacturers
46:22added it intentionally
46:24as the Switch's
46:25cartridge size
46:26is very small
46:27and it might be
46:28a hazard
46:28for the youngest players
46:29that have a tendency
46:31to put things
46:31in their mouth
46:32that they shouldn't.
46:33So the bitter taste
46:35made from
46:35Denetonium Benzoate
46:36ensures that they
46:38won't be tasted
46:38for too long.
46:40Cosmetics containers
46:41that are filled
46:42with products
46:43used for your skin
46:44have a secret number
46:46on them.
46:46This is to help
46:47inform you
46:48how long the product
46:49will be usable,
46:50ensuring it doesn't
46:52cause the reverse effect
46:53by damaging
46:54your skin instead.
46:57Pen lids
46:57have a hole
46:58at the end of them.
46:59It's not there
47:00to help your pen breathe
47:01and boost performance,
47:02but it's there
47:03to help you breathe.
47:05Just in case
47:06while you're sitting
47:06in class
47:07or at work
47:08and you're chewing
47:08on your lid
47:09and just happen
47:10to swallow it,
47:11you can be rest assured
47:12if it's stuck,
47:14the pen makers
47:14were thinking of you.
47:16When you're traveling
47:17by car
47:18or any other form
47:19of ground transportation
47:20and you're trying
47:21to drink your favorite
47:22pot from a straw,
47:23you'll find it
47:24quite difficult
47:25to do at times.
47:26Simply turn the tab
47:28on the can around
47:28so that your straw
47:30easily fits inside,
47:31making it easier
47:32to drink out of.
47:34There are always
47:35spare buttons
47:36when buying new clothes
47:37along with a little
47:38bit of fabric.
47:39It's far too small
47:41to repair that crutch part
47:42that always rips first.
47:43The fabric is actually
47:45there for you
47:46to test how to wash it
47:47so you don't accidentally
47:49ruin your brand new clothes.
47:51Determining how much
47:52pasta you need
47:53just for yourself
47:54can be difficult
47:55to figure out.
47:56Your big spaghetti spoon
47:58with the big hole
47:58on the inside?
47:59That looks like
48:00it's there to drain water
48:01is actually there
48:03so you can put
48:03the uncooked pasta
48:04inside before cooking
48:06so you know
48:07exactly how much
48:08you need.
48:10New shoes always
48:11come with those
48:12strange little packets.
48:13That's silica gel.
48:15The gels are there
48:16to reduce the moisture
48:17in the air
48:18to avoid any fungal growth
48:19while the shoes
48:20were waiting
48:21to be purchased.
48:22There's a lot
48:23of chemistry involved
48:24to get you that silica
48:25and it's very effective,
48:27capable of absorbing
48:2850% of the humidity.
48:30So make sure
48:31you don't throw it away.
48:33Next time you need
48:34to dry out
48:34your electrical devices,
48:35it's a lot easier
48:37than using rice.
48:38It's difficult enough
48:40to see at night
48:41whilst driving,
48:41but it's even worse
48:43when the driver behind you
48:44shines their high beams.
48:46Your rearview mirror
48:47has a tab at the bottom.
48:49When you press it,
48:50it changes the angle.
48:51One is for day driving,
48:53the other,
48:53well,
48:54for night time.
48:55It'll help in case
48:56that one person
48:57driving behind you
48:58has forgotten
48:58to turn off
48:59their high beams.
49:00Although your screwdriver
49:02is ergonomically made
49:03for your hand,
49:04sometimes you have
49:05that one screw
49:06that's too hard
49:07to loosen up.
49:08The handle
49:09is also shaped
49:10so you can easily
49:11fit inside
49:12of a ring spanner
49:13or wrench,
49:14allowing you
49:14to apply more force,
49:16ensuring that you
49:17can remove
49:17that troublesome screw.
49:19The skirt part
49:20on an escalator
49:21seems like a good spot
49:22to get your foot stuck.
49:23But in reality,
49:25those long brushes
49:26poking out
49:26aren't there
49:27to give you
49:27an extra shine
49:28on your shoes,
49:29but for safety precautions
49:30to minimize the risk
49:32of trapping objects
49:33between the steps
49:33and the side
49:34of the escalator.
49:36Road and construction workers
49:38are usually dressed
49:39in orange
49:40because the bright orange hue
49:41is visible
49:42even in bad weather.
49:43It's the most effective color
49:45to attract attention
49:46and alert people.
49:47No wonder
49:48lots of safety jackets
49:49and traffic cones
49:49are orange as well.
49:51The stop sign
49:52has an eight-sided shape
49:53to help drivers
49:54recognize it easily,
49:56even if they see it
49:56from the back.
49:57And when the signs
49:58weren't reflective yet,
49:59the octagon shape
50:00prevented drivers
50:01from confusing the stop sign
50:03with any other at night.
50:05The rumble strips
50:06on the side of the road
50:07are placed there
50:08to alert drivers
50:09who doze off
50:10behind the wheel.
50:11When their tires
50:12move over these strips,
50:13the noise and vibration
50:14work like an alarm clock
50:16There are magnetic locks
50:18on fuel hoses
50:19at gas stations.
50:20They come in handy
50:21if someone drives away
50:22with the gas nozzle
50:23still attached
50:23to their car.
50:24In this case,
50:25the lock detaches
50:26the hose automatically.
50:28Oh, that's embarrassing.
50:30Gasoline looks like
50:31a rainbow in a puddle
50:32because it can't mix
50:33with water.
50:33It forms a thin membrane
50:35over it.
50:36When light reflects from it
50:37and the water
50:38at the same time,
50:40you've got a rainbow.
50:41A triple handle
50:43on a jerry can
50:44is there to make it easier
50:45for two people to carry it
50:46and distribute fuel evenly.
50:48Gas cans often have
50:50a second hole
50:50that actually needs
50:51to be uncapped too
50:52before you pour the gas.
50:54The air passage
50:55will prevent it
50:56from pouring out
50:57so no more fuel waste.
50:59Most gas cans
51:00have two holes with caps,
51:02a bigger and a smaller one.
51:04You're supposed to
51:05uncap the smaller hole
51:06before pouring gas
51:07inside the bigger one.
51:08It'll prevent the liquid
51:09from glugging
51:10and spilling all over
51:11your clothes
51:12and the ground.
51:13Another little thingy
51:15we often neglect
51:15is a point
51:16on an ointment cap.
51:18Most tubes are usually
51:19sealed with a plastic film
51:20or a foil
51:21and opening it
51:22with your fingernails
51:23isn't the best idea.
51:24A point easily opens
51:26even the most
51:26safely sealed tube.
51:29You can use
51:30most screwdrivers
51:31together with a wrench
51:32to create more torque.
51:34Just place the wrench
51:35over the handle
51:36of the screwdriver.
51:37This way,
51:38you'll need to apply
51:39a lot less force
51:40than before.
51:41You'll also be able
51:42to get to hard-to-reach
51:43areas more easily.
51:45They install cameras
51:46in shops, banks
51:48and hospitals
51:48to monitor everything.
51:50If something happens,
51:51you can call the police
51:52or rescuers.
51:53The camera really helps
51:55to solve a lot of problems.
51:56Why are there
51:57no cameras on planes?
51:59The crew keep order
52:01on the plane,
52:01but they won't be able
52:02to do anything
52:03if something serious happens.
52:05Besides,
52:06there's nowhere to run
52:07on the plane.
52:08During the flight,
52:09the cameras are useless
52:10and after the flight,
52:12the words of the passengers
52:13work ideally
52:14instead of cameras.
52:15So,
52:16if cameras do no good,
52:17then why spend money on them?
52:20Water is great
52:21at cleaning stuff
52:21because it has
52:22triangular molecules.
52:24They're made of
52:24one oxygen
52:25and two hydrogen atoms.
52:27Um,
52:27H2O?
52:28Such molecules
52:29have slightly different charges
52:31on their opposite sides,
52:32pretty much like magnets.
52:34That's why water
52:35easily sticks
52:35to other molecules,
52:36including those
52:37that make up dirt.
52:39Lots of private houses
52:40have triangular-shaped roofs
52:41because this allows rain,
52:43snow,
52:43and fallen leaves
52:44to slide off the slope.
52:46If all this stuff
52:47piled up on top of your house,
52:49one day,
52:50your roof would collapse.
52:52When a storm is coming,
52:53clouds seem to turn dark,
52:55but it's just an illusion.
52:56Thin clouds on a sunny day
52:58let the light through easily.
53:00They also scatter
53:01all the colors
53:02of the light spectrum.
53:02This makes us perceive
53:04the clouds as white,
53:06but the thicker
53:06the clouds are
53:07and the more water droplets
53:08they contain,
53:09the less light they let through
53:11and the darker they look.
53:13A good doorknob
53:14is the one made of brass,
53:16bronze,
53:16or some copper alloys.
53:18These metals
53:19have an anti-germ effect.
53:21Bacteria spread
53:22way slower on them.
53:24They also get rid of germs
53:26pretty fast,
53:27within a couple of hours.
53:28Nope,
53:29it doesn't mean you don't
53:30have to wash your hands.
53:32Diamonds have such
53:33symmetrical shape
53:34to show you their brilliance.
53:35Initially,
53:36the gems aren't so beautiful.
53:38They go through
53:39several stages of cutting
53:40and then become
53:41pieces of elegance.
53:43Most of these stones
53:44have a round shape
53:45with slightly pointed corners.
53:47Diamonds shine the brightest
53:48in this shape.
53:50Why are there two holes
53:52in the socket?
53:53The left hole is neutral,
53:54the right hole is not,
53:56and the gap underneath
53:58is ground.
53:59Electricity needs to flow
54:00through the chain.
54:01The current flows
54:03from the hot slot,
54:04passes through your phone charger,
54:05for example,
54:06and then goes through
54:07the neutral hole.
54:09Ever wondered
54:10what that small pocket
54:11on your jeans is for?
54:12People used to wear
54:13watches on chains.
54:14That small pocket
54:15was meant for it.
54:17Now,
54:17almost no one wears
54:18such a watch,
54:19but the pocket remains.
54:21You can still keep
54:22something small in there
54:23like a ring.
54:24In London,
54:25there are some poles
54:26that look like street lamps,
54:27but there are no bulbs.
54:29Well,
54:30their official name
54:30is stink pipes,
54:32and they're a thing
54:33of the past now,
54:34but they used to come in handy
54:35back in the 19th century.
54:37These hollow poles
54:38would vent away the air
54:39and explosive gases
54:41with bad smells
54:41to prevent,
54:42shall we say,
54:43unwanted consequences.
54:46Most kitchen shears
54:47have metal plier-like teeth
54:49in the middle.
54:49Between the handle grips,
54:51they can help you
54:52crack nuts,
54:52crab shells,
54:53and other tough products.
54:55You can also open jars
54:56and bottles
54:57or remove herb stems
54:58with their help.
55:00Leather often looks dull
55:02to the eye
55:02because it's covered
55:03with itsy-bitsy scratches
55:05and scrapes.
55:05They scatter the light
55:07that hits the material.
55:08When you coat your shoes
55:09in a layer of wax,
55:10you fill these tiny crevices.
55:13The surface becomes smoother
55:14and the rays of light
55:15bounce off it more evenly.
55:17That's why
55:18the leather looks shiny.
55:20Highlighters are filled
55:21with a special semi-transparent
55:23fluorescent ink
55:24that can glow in dim light.
55:26Yellow and light green hues
55:28are the most popular
55:29because they don't prevent you
55:31from seeing the text
55:32after black and white photocopying.
55:34Photocopiers perceive
55:35yellow and light green marks
55:37as very pale
55:38and don't print them.
55:39They make magnets
55:41shaped as a horseshoe
55:42because this increases
55:43the magnetic force.
55:45Colors matter too.
55:46The blue part
55:47indicates the south pole,
55:48the red part
55:49the north pole.
55:50The two poles
55:51work simultaneously
55:53and increase
55:53the attraction force.
55:56The dime-sized holes
55:57in elevator doors
55:58is actually a keyhole.
56:00If the doors get stuck,
56:01an operator can open them manually
56:03thanks to this hole.
56:04They'll just insert
56:05a special key.
56:07The tiny hole
56:08in the airplane window
56:09is there to balance
56:10air pressure.
56:11The window
56:12has three layers.
56:14The outer pane
56:15is extremely sturdy.
56:16It can withstand
56:18air pressure differences
56:19during take-off
56:20and landing.
56:21The inner pane,
56:22which is the closest to you,
56:23is made of cheaper materials.
56:25It prevents potential damage
56:26to the window.
56:27The hole itself
56:28is in the middle pane.
56:30It not only balances
56:31the pressure
56:32but also prevents
56:33the window
56:33from fogging.
56:36Escalator brushes
56:36are there for your safety.
56:38They don't allow you
56:39to come too close
56:40to the edge
56:40of the escalator.
56:41This way,
56:42your clothes won't end up
56:43between the steps.
56:44You see the sun
56:46as yellow or orange
56:47because the atmosphere
56:49of our planet
56:50scatters such colors
56:51as blue,
56:52green,
56:52and violet.
56:53This is also why
56:54the sun looks warmer
56:55at sunrise and sunset.
56:57Go shopping
56:58for some oranges
56:59and I'm sure you'll get them
57:00in a red mesh bag.
57:02You'll rarely see them
57:03lying around
57:04without one of those.
57:05It's pure marketing
57:06and that color
57:07isn't a random choice.
57:08When packed
57:09in a red mesh bag,
57:10oranges appear
57:11more orange,
57:12fresher,
57:13and more appealing
57:14to you.
57:15So,
57:15you're more likely
57:16to buy them, right?
57:17Lemons are usually
57:18sold in green mesh bags
57:20for a similar reason.
57:21If you pack them in red,
57:23they'll appear more orange.
57:24Green goes better
57:25with yellow
57:26and makes those lemons
57:27stand out.
57:29Mattress manufacturers
57:30make a limited number
57:31of different mattresses
57:33and the only way
57:34to make them look different
57:35is to come up
57:35with a fancy stitching pattern.
57:37Two mattresses
57:38of two different companies
57:39might be the exact same quality
57:41but cost differently.
57:43Most people will never know it
57:44and will decide
57:45that different patterns
57:46mean something
57:47in terms of quality.
57:49So,
57:49when shopping,
57:50don't mind the pattern at all.
57:53Almost all hotels
57:54have white bed sheets.
57:55They choose this color
57:56specifically to show
57:57how high their standards
57:58of cleanliness are.
58:00The whiter
58:00and brighter the sheets are,
58:02the more luxurious
58:03the hotel seems.
58:04It's much easier
58:05to see dirt
58:06and stains
58:06on white linen.
58:07It's like proof
58:08that you've checked
58:09into a clean room.
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