- 5 months ago
Discover the hidden potential of plastic bottles and matches in this eye-opening video! We reveal how to transform ordinary materials into powerful tools for home repairs using thermal engineering principles. Learn how to create a vacuum seal and achieve a strong bond for fixing plumbing leaks effortlessly. This isn't just a hack; it's an innovative approach to asset recovery that can change the way you view waste.
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00:00Now here's a trick. Instead of putting the box grater vertically on top of a plate, put it horizontally, with
00:06no plate underneath, of course.
00:08This way, you won't risk scraping your knuckles, because only your fingertips will eventually touch the grater when you reach
00:14the end of the process.
00:15Also, it gives the grater more stability, when otherwise you'd have to balance the grater or even hold it in
00:21the air with the other hand.
00:22When you're done, or when there's just too much grated stuff on the bottom wall of the grater, simply turn
00:28it on its side to pour the contents into the bowl or plate.
00:32Flowers in a vase would stay fresher for longer if not for the bacteria that breed in the water.
00:37Since copper has some antibacterial properties, dropping a penny into the water will help keep the microbes at bay and
00:44let you enjoy your flowers for that little bit longer.
00:47An easy way to check if your bed linen has dried completely is to put a small mirror in between
00:53the layers for about 5 minutes.
00:55If the mirror has steamed up when you pick it up, it means the sheets are still a bit damp.
01:00Let them dry until the mirror stops getting cloudy.
01:03A damp bed is a lovely breeding ground for fungi and bacteria.
01:08Okay, I'm in.
01:09If you have a not-very-healthy habit of eating in front of your computer, you'll be surprised at how
01:16much crumbs and grime there is inside your keyboard.
01:19Now, you can just turn it over and shake it vigorously, of course, but that's not very good for any
01:25piece of tech, you know.
01:26So instead, take a post-it note and run its sticky part over the keyboard.
01:31It will collect the little pieces of trash like magic.
01:34Even a better way to do it, though, is to take a slime and stick it to the keyboard, then
01:40take it away, squeeze it, and stick again in another part.
01:43The slime will fill the entire space between the keys, and its sticky properties will let it gather every little
01:49bit of garbage.
01:51Separating egg yolks from whites is easier using a plastic bottle.
01:55Break the necessary number of eggs into a bowl, and then take an empty plastic bottle and squeeze it.
02:01Hold the bottle over the yolk and release.
02:04It'll pull in air and the yolk together, leaving the white in the bowl.
02:08Repeat with the rest of the yolks, and you're done!
02:11And that's no yolk!
02:13If you're tired of spitting out the stones when eating cherries or want to make a cherry pie, push the
02:19stones out with a straw.
02:21Also, many garlic presses have a special tool on their handle that can be used exactly for that.
02:27Cleaning a blender can be a nuisance if you do it manually.
02:30Instead, fill it with hot water and add some liquid soap or detergent, then run it for about 10 seconds.
02:36Rinse it afterwards, and it's clean.
02:39Plaster walls can crumble, flake, and spread dust all over the floor when you hammer nails into it.
02:45Cut a strip of masking tape and stick it to the place you want to hammer a nail in.
02:49The tape won't let the plaster crack and crumble, leaving the hole neat and clean.
02:55Small scratches and dents on wooden furniture can be removed with some toothpaste or a walnut.
03:01For toothpaste, rub a pea-sized amount of it into the scratch until it's gone, then wipe the leftovers with
03:07a damp cloth.
03:08For a walnut, take a half of that brain-shaped nut and rub it into the dent.
03:14Then rub the area with your fingers and buff it with a soft cloth.
03:18This'll help the wood absorb the oil from the nut, making the scratch sealed and gone.
03:23The sticky residue on jars left after you remove the stickers won't be easily removed by water and detergent.
03:29So, take some vegetable oil instead.
03:32Soak a cotton pad in it and wipe the sticky surface.
03:36Let it sit for a while and then wash the oil away together with the residue.
03:41If you can't comfortably reach the wick of a candle with a lighter,
03:45hey, take a stick of spaghetti.
03:47Light up its end, and you'll get a burning stick that's easy to use for hard-to-reach places.
03:52Now, next time your razor blade's getting dull,
03:55try rubbing it backwards on a pair of jeans for regular upkeep.
03:59Not while you're wearing them, of course.
04:01Make sure you keep the blades dry, too, or even kept in mineral oil.
04:05That'll stop them from rusting.
04:07Keep all those jelly, ketchup, peanut butter, and mayo fresher for longer in your fridge
04:12by turning the contents upside down.
04:15This creates a partial vacuum inside the container, helping prevent mold growth.
04:20Storing ice cream upside down will prevent freezer burn, too.
04:24To bring your permanent marker back to life,
04:27simply put a few drops of rubbing alcohol into the felt material inside and shake.
04:32Once the felt absorbs the rubbing alcohol for a couple of minutes,
04:36the marker will be almost as good as new.
04:39Now, don't keep throwing away lettuce that goes black too quickly.
04:43Covering it with a dry paper towel and then placing it in an airtight container
04:47will help it keep fresher for much longer.
04:49This goes for any leafy greens you've got leftovers of.
04:53That sharpish bit sticking out of the cap of your favorite cream is there for a reason.
04:59These tubes are usually sealed with foil,
05:01so unless you love breaking your nails trying to open them,
05:04just flip the cap over and push.
05:07Your bobby pins might not stay in place if the grooves aren't facing the right way.
05:12They should always be on the bottom, close to your head.
05:15Still coming loose?
05:16Well, put a squeeze of hairspray right onto the bobby pin before you put it in your hair.
05:21Now, your cotton rounds pack has those strings on it,
05:25so you can hang it on a handy hook in the bathroom.
05:27But there's no need to loosen and tighten it back up every time.
05:31Check out the bottom of the pack.
05:33It has a perforated line.
05:35Tear it open carefully, and you're good to go.
05:38Two zips too much?
05:40Maybe.
05:41But they come in handy as a clever anti-theft device.
05:44Just lock them together.
05:46Now, no one can open your backpack.
05:48Don't have a lock on you?
05:49You can also tie them together with some string, or even just a paper clip.
05:54Anything to slow those pickpockets down.
05:57That tiny little button on the back of a shirt collar is used to hold your tie in place.
06:02Hey, you don't want your tie trying to escape back there.
06:06Shoe manufacturers care about their customers.
06:08So, most running shoes now have a special anti-blister system pre-installed.
06:14Sounds intense, but it's basically just that extra hole on top of your sneakers.
06:18Make a loop with the extra hole, inserting the lace backward.
06:22Cross your laces and put them through the loops.
06:25Now, pull the laces down to lock your foot in place.
06:28Now, run.
06:29Yeah, go ahead.
06:31Car headrests are all about comfort, and detachable headrests are all about safety.
06:36If you pull the headrest out, you'll see two sturdy metal bars.
06:40If you ever get locked or trapped in your car, you can use the bars to smash the window and
06:45get out.
06:47If you've got some pesky parsley stuck in your teeth, try this tip.
06:51It can be hard to get it out with loose floss.
06:54You need more tension, so just tie it in a knot.
06:58It's not an accident that soy sauce bottles have two spouts.
07:01The sauce is liquid, and it flows out of the bottle pretty easily once you turn it over.
07:06Most Asian food lovers have spilled it at least once in a lifetime.
07:10That's why nowadays, restaurants prefer serving soy sauce in special bottles that have two spouts.
07:16This design allows you to control when and how much sauce will come out.
07:20Just put your finger on one spout when you pour the sauce through another.
07:24If you press your finger tightly to the spout, the sauce will stop flowing,
07:29and if you remove your finger, it'll flow again.
07:32And don't forget to ask your server,
07:34Hey, wasabi!
07:36Alright.
07:37A hair straightener is an excellent tool, not only for treating your natural curls,
07:42but also for fixing crumpled money or documents.
07:45You can also use a regular iron for this purpose.
07:47Just make sure you don't turn on steaming mode.
07:50Otherwise, there's a risk of damaging the paper.
07:54Hairbands are good not only for getting your hair done,
07:56but also to open a glass jar with canned food.
07:59Your hands might slip on the tightly closed lid,
08:02and if you don't open the can from the first attempt,
08:05your palms tend to get sweaty, making the task virtually impossible.
08:10So, put a hairband on the lid to fix your hand and make your grasp stronger.
08:15A simple rubber band will do as well.
08:17Now, it's time to take my sweaty palms and go.
08:21The Queen's Guard all appear to have the same uniform,
08:24with a shared role of standing stoically for a long time.
08:28But if you look closely at their hats, there are five different types.
08:33The Grenadier has a white plume.
08:35The Coldstream has a red one.
08:37The Irish, a blue plume.
08:39The Welsh, green and white.
08:41And the Scots Guard has none.
08:45Their different divisions perform similar ceremonial duties at Buckingham Palace.
08:50But they have other actual rules as well, suited to their specialization.
08:55When peeling your boiled eggs, you can see a hidden layer under the shell.
08:59These two membranes, an inner and outer one, are made from the same stuff as your hair.
09:04Keratin.
09:05It protects the inside from bacteria and stops liquids from escaping.
09:10You use X in your texts, which represents a kiss.
09:14It's been used this way for a very long time.
09:16It's original purpose dates back to the Middle Ages,
09:19where it was a representation of a person's faith, honesty, and sincerity.
09:24Those that would sign off with an X would kiss it after signing as a display of a sworn oath.
09:31The X's meaning later changed to represent the action of kissing.
09:35And the first document showing this was a letter dating back to 1763,
09:40written by a naturalist, Gilbert White, who sent it to his wife.
09:46William Shakespeare is a name familiar to everyone.
09:49However, we don't know whether this was the actual way his name was spelled, and neither did he.
09:55He signed 80 different variations of his name spelling on all his works.
10:00Historians haven't a clue which the correct spelling is.
10:03The version that we know of was only used on two of his plays.
10:09Different forms of alarm clocks were invented as far back as 348 BCE,
10:14with many versions throughout the world, all with complicated mechanics.
10:19Unaffordable to mostly everyone, they didn't catch on.
10:23Alternate methods to wake up in the morning started to be used in the 1800s.
10:27One process involving knocker-uppers was common in some countries.
10:32A person visited your house every morning to knock on your door four times.
10:38Inventor Antoine Rédier felt that he should be woken only when he felt it necessary.
10:43So, in 1847, he invented the first adjustable alarm clock.
10:49Tennis balls in Wimbledon must be kept at a perfect temperature to ensure they bounce at a consistent level.
10:56They're stored at 68 degrees Fahrenheit,
10:59so they're cold enough that the molecules inside the ball shrink, ensuring they bounce lower.
11:05Then, they're continuously swapped throughout a match as they expand by being hit too much, becoming too bouncy.
11:12Wimbledon goes through 50,000 tennis balls each year.
11:17You enjoy the smell of a freshly mowed lawn, as you associate it with the weekends and summer.
11:23But that smell is a sign of stress made by the grass.
11:27Grass evolved to emit various elements when being eaten by bugs.
11:31This signal attracts predator insects to remove them.
11:35But unfortunately for the grass, there's nothing large enough to deter a lawnmower.
11:40There is no oxygen inside your packet of chips.
11:44If there was, it would influence the combination of molecules forming inside, spoiling the chips faster.
11:50The packets are instead filled with nitrogen, which pushes oxygen out.
11:55And this extends the shelf life and quality of your chips.
12:00You're traveling by plane overnight and just can't get to sleep.
12:04And the first night in a hotel wasn't great, regardless of how comfy the bed was.
12:10This is because of a human evolutionary trait called the first night effect.
12:15When you sleep in a different place than your home, the left side of the brain responds to more sounds
12:21while you're asleep.
12:22It continues to analyze your surroundings without you realizing, acting as though it's on a night watch and keeping you
12:28alert for any potential dangers.
12:31Most animals have this trait, although it's a lot more subtle in humans.
12:36But it's still effective enough to make sure you get your peanuts.
12:41Before playing basketball with hoops, you would have instead been playing with peach baskets.
12:46When the game was invented in 1891, a peach basket was used, with the bottom of it cut off.
12:52But it only took 15 years for players to grow tired of constantly collecting the jammed balls and to remove
12:58the basket altogether.
13:00When you click your fingers, the snapping sound isn't from the physical click of finger and thumb.
13:06The noise actually comes from the finger hitting the palm.
13:11The instant film for the first Polaroid cameras didn't have their own coating after taking a photo.
13:16To develop it, you applied it yourself.
13:19Waiting for it to dry took a long time, so shaking it sped up the process.
13:24Then, from the 1970s, the film provided everything required for the photo to develop, making the popular craze of shaking
13:31Polaroids pointless.
13:33Shaking the photo can cause the ink to wave or blur before drying properly, so you shouldn't actually shake it
13:39like a Polaroid picture.
13:41And just wait patiently instead.
13:44Bug spray doesn't repel all bugs, especially the worst of them all, mosquitoes.
13:49It does cover the scent of carbon dioxide, which is what attracts mosquitoes.
13:54But the spray only protects you for a short distance.
13:58Mosquitoes can also track carbon dioxide over long distances.
14:03They will continue to stalk you until they find a gap in your invisible bug shield.
14:08A great alternative is lavender, which contains linalool.
14:12This fragrance completely overloads the mosquito's senses, making it unable to track you.
14:18The half-belt on the back of some jackets appear like a fashion accessory.
14:23It was initially designed that way for larger jackets, as they could also be used as a blanket to wrap
14:28around oneself.
14:30The belt's position helps hold the material together, so it's easier to walk with whilst keeping you warm.
14:37Ketchup wasn't originally intended to be your favorite condiment.
14:40In 1834, a physician, John Cook, sold ketchup as a cure for indigestion.
14:47It was an immediate hit, and today, 10 billion ounces are purchased annually in the USA, although not as the
14:55intended medicine.
14:58Thomas Edison made over 1,000 inventions, and one in particular, the lightbulb, is most famously linked to him.
15:05However, he didn't actually invent it.
15:08Warren Delarue, a British chemist, had solved this scientific challenge 40 years earlier.
15:14There were also 20 other inventors who made alternate versions before Edison did.
15:19But earlier varieties relied on cotton thread and only lasted up to 14 hours.
15:25Edison, in 1880, used a carbonized bamboo thread instead, and his worked up to 1,200 hours.
15:33It became the most commercially viable lightbulb, and today's ones are similarly shaped to Edison's original.
15:40The first treadmill was used in England in 1818.
15:44It was a large wooden cylinder with a handrail, although it wasn't used to keep fit.
15:50Convicted criminals would be forced to use these for up to 10 hours per day as a punishment.
15:56The energy output potential was realized, and soon it was built to work with water pumps and grain grinders.
16:03It was so effective that it was used in all prisons throughout the country.
16:07But in 1902, it was decided that it was too harsh and stopped.
16:12And now, this cruel punishment is mainly found in gyms.
16:17During the 1940s, there was a shortage of cocoa, and it was important to find a solution to this problem.
16:23A production company found a way by mixing only a small amount of cocoa with hazelnuts and milk,
16:29and the original Nutella was created.
16:32It started out as a loaf spread, like a stick of butter.
16:35It then transformed into a creamier version inside a jar in 1951.
16:40But it wasn't until 1964 that it was given its famous name.
16:46Your passport might be a dark shade of either green, blue, or red.
16:51The darker color not only makes them appear more official,
16:54but is intended so that through its journeys, the dirt that's collected is more easily hidden.
17:00Wasabi was first used back in the 8th century.
17:04It wasn't meant as a spicy condiment as it's served with sushi today.
17:08Initially, it was used for its antimicrobial properties
17:12that help avoid the harmful reactions to fish with sushi that's a bit too old.
17:21I have a collection of questions you've always wanted the answers to.
17:25Let's go!
17:27First, an observation.
17:29Cookies and baguettes are basically kinds of bread.
17:33So my question is,
17:34Why when left outside for the night,
17:37a cookie gets soft and a baguette becomes hard?
17:41It doesn't make any sense.
17:43Well, the thing is, cookies are sugary bread.
17:47The sugar and salt in them soak up the moisture from the atmosphere.
17:50So, they get soft.
17:54Baguettes don't have much salt and sugar,
17:56so they don't attract water and just dry out.
18:01Superglue sticks everything to everything.
18:04But how come it doesn't get stuck to the tube?
18:07Turns out that the glue needs some compound with hydrogen to polymerize.
18:13In the tube, there's just oxygen and no water.
18:16But outside, there's plenty of moisture.
18:19Also, this explains why the stuff always sticks so well to your fingers.
18:24They're warm and perfectly moist.
18:29I'm sure you cried at least once when cutting an onion.
18:32Why does it happen?
18:34So, onions and garlic contain amino acids.
18:37And one of the compounds gets decomposed when being sliced.
18:41It turns into an irritator when it comes in contact with water.
18:45In particular, your eyes.
18:47Your eyes release tears to wash the irritant away.
18:51So, that's why you cry.
18:53There are a couple of tricks that can prevent it.
18:55When cutting an onion, try keeping a sugar cube between your teeth.
18:59It'll absorb the irritant.
19:01Another life hack is to hold a small piece of bread between your lips.
19:05It can help you too.
19:08Why do you see things when rubbing your eyes?
19:11These colors and shapes are called phosphenes.
19:14The reason why you see them is that when rubbing, you increase the pressure in your eyeballs and activate the
19:20neurons of the retina that process visual information.
19:23Once they're activated, your brain interprets it as seeing something.
19:29When you don't get enough sleep or are just too tired, you get those dark circles around your eyes.
19:35Want to know why?
19:36The skin under the eyes is very thin.
19:39So, blood vessels are very close to the surface there and you can see any difference easily.
19:45If you have a lack of sleep, your skin gets paler and the blood vessels are even more visible.
19:51So, you can see those dark circles showing through the skin.
19:54Also, with age, the skin naturally gets thinner.
19:58So, that's why older people tend to have dark circles.
20:01But, if you're young, just try to get more sleep.
20:06Let's pay a bit of attention to backpacks.
20:09They have a few interesting features.
20:11First, some of them have sternum straps and they are quite helpful.
20:16They allow you to redistribute the weight of the backpack a bit, lifting some of it from your shoulders.
20:21Not much, but just enough to make your backpack lighter and easier to carry.
20:27And, of course, the sternum straps prevent the shoulder straps from sliding off.
20:33Okay, the next thing is gear loops.
20:36And probably from the name of it, you already have an idea of what you need them for.
20:40You can strap in some useful gear you need with you, like trekking poles or shovels.
20:46Some gear will need to be secured to do it.
20:49Drop the handle through the loop and rotate it upward.
20:52Then, secure it with the elastic hook at the top.
20:55And you're golden.
20:57And yes, all backpacks have loops.
21:00Actually, I never thought of their purpose until today.
21:03Some people say that if you slide your thumbs through them, it makes the backpack sit tighter on your back,
21:09making it more comfortable.
21:11Other people just rest their hands there.
21:14But the reason why they're there is probably to prevent the ends from sliding back from the buckles.
21:19That would be quite a headache to slide them back all the time, right?
21:25Okay, let's look into some other ordinary stuff we've never paid attention to.
21:30Let's take, for example, jeans.
21:33They have those metal rivets.
21:35It turns out that they've been there as long as jeans exist.
21:39Jacob Davis, the man who made the first pair of jeans, added copper rivets to places where the pants were
21:45more likely to rip to make them stronger.
21:49So, it was a crucial detail to keep jeans together.
21:52Today, they have a more decorative purpose because they're distinctive and traditional for jeans.
22:00Also, many zippers have the letters YKK engraved on them.
22:05Those are the initial letters of Yoshida Kogyo Kabushiki Gaisha.
22:09It's the name of a Japanese company that can be translated as Yoshida Manufacturing Shareholding Company.
22:15It's the largest zipper manufacturer in the world, so all zippers produced by them are marked with these letters.
22:24It's estimated that the company produces half of all zippers in the world.
22:29That's why you see their zippers more often than any others.
22:35Have you noticed that canned and bottled soda seems to taste different?
22:40You're not wrong.
22:41That's actually true, and there's even science behind it.
22:45Chemists say that aluminum cans have a polymer layer that absorbs some of the soda's taste, so cans indeed change
22:52the taste.
22:54Chemicals in a plastic bottle can add some acetaldehyde, a byproduct that gets formed while plastic is melted, to the
23:01drink.
23:01So, they also change the taste a bit.
23:04You never really drink the original drink.
23:07If you want to try the real thing, buy sodas in glass bottles.
23:12When soda is stored this way, its taste is the most similar to the original one.
23:19Plastic bottles with soft drinks have five bumps on the bottom, and water and juice plastic bottles have almost flat
23:26bottoms, except for a little kink.
23:28It's not random.
23:29A plastic bottle is made by putting a plastic tube into a mold and blowing some air inside to make
23:36it expand until it takes the needed shape.
23:39The problem is that at the bottom, the bottle will always have an outward kink that will make the bottle
23:45unstable.
23:47To avoid it, some air is also pushed inward from the bottom, creating that small punt at the base of
23:54it.
23:55Flat bottle bottoms are common because they need less plastic to be made, but soft drinks and sparkling water need
24:02special treatment.
24:03These liquids have internal pressure that can push the plastic outward, messing up with the punt and the stable form
24:11of a bottle.
24:12So, soda bottles have a curved shape because this way they're more pressure resistant.
24:20Compare folding a regular piece of paper to folding a paper too.
24:24The latter will have more resistance.
24:26In the same way, curved plastic is more resistant to any pressure.
24:33Take a closer look at your bag of chips.
24:35You can probably find these little colored circles.
24:39They're made by the manufacturer to test the print that is used on the package.
24:44They're called color control patches.
24:46The circles are not the same palette as the final package.
24:50They're layered on top of each other to achieve the final color of the bag.
24:55So, why do manufacturers need them again?
24:59Imagine that something is off and the printing machine prints a bunch of wrong packages.
25:04That's a lot of wasted money.
25:06So, these control patches are there to make sure that the final print is going to be correct.
25:12If they're off, the manufacturer will know that the whole package is going to be off too.
25:18These patches allow the printers to find a surplus or a deficiency of color and solve the issue.
25:24But don't worry if you don't find these circles.
25:27They probably just got cut off.
25:31Take a good look at a milk jug.
25:33There's often an inverted circle on one of the sides.
25:36This dimple is there to make the jug more resistant and to prevent it from rupturing if the jug falls
25:44on the floor.
25:45The dimple gives some more space for the liquid to expand.
25:49Also, as the expiration date approaches, the microbes in the milk start to expel some gases.
25:56As more and more of them get trapped inside, the pressure in the jug rises.
26:01The dimple accommodates the expansion and prevents the jug from bursting.
26:09Okay, I know it's kind of cold to the touch, especially on a freezing winter's day.
26:13But did you know that brass doorknobs actually serve a purpose apart from looking classy and shiny?
26:18Since it's a copper alloy, brass has antimicrobial properties.
26:22That means it can help get rid of harmful germs and bacteria, sometimes in up to two hours.
26:28In high traffic areas, that's all the more useful.
26:31But since brass is much costlier than other metals like nickel and steel,
26:34you barely see these types of doorknobs anymore nowadays.
26:39Speaking of lovely multi-purpose items, most screwdrivers have a tiny little secret of their own.
26:44They can sometimes be slid through a wrench so that they can be used to create more torque when twisting.
26:49Not to mention the uses when it comes to bolts in hard-to-reach places.
26:54There's a reason why buttons on women's shirts are for the left-handed,
26:58and it has nothing to do with fashion.
26:59This practice dates back to the times when chambermaids were helping ladies dress themselves,
27:05and it was easier for them to perform their job with this orientation.
27:09Having the buttons placed as such indicated a sign of wealth,
27:13so it's easy to imagine why the practice carried on,
27:16even though most people dress themselves nowadays.
27:19Next time you receive a package in your mail, take a look at your box cutter.
27:23If it features some diagonal lines on the blade, you're in for a little design perk.
27:28Turns out that these are blades that snap off.
27:31Continuously cutting cardboard can dull the sharp edge of the blade.
27:34To help prevent the need to buy a brand new box cutter,
27:37the top segment along the next line can be broken off to reach a new sharp edge.
27:42To do this, check out the small hole at the base of the tool,
27:46sometimes called the blade snapper.
27:48The people that first came up with this brilliant invention were engineers,
27:52inspired by the way chocolate bars are segmented.
27:55Hold on a minute, don't throw away the cardboard package just yet.
27:58Most likely, you'll have some silica gel packets somewhere at the bottom of the box.
28:03Since this gel is basically a drawing tool,
28:05it gathers up the moisture out of its environment,
28:07so you can store these packets for further occasions.
28:10Whether you'll need to dry out your phone or some other electrical object,
28:14you can place them in a container next to the silica gel to reduce the damage.
28:19You don't have to be a mechanic to know when a standard car tire needs replacing,
28:23since they come equipped with a neat indicator.
28:26Take a closer look,
28:27and you'll see that treads within the tire are a bunch of rubber notches.
28:32When the treads are evened out with the perpendicular bars,
28:35it's a sign you need to book an appointment with your local car service.
28:38Since most likely the tires have lost most of their traction,
28:41and may not be safe for driving any longer.
28:45The upper corners of a car windshield feature textured black dots melted into the glass edges.
28:50This neat add-on isn't there for design purposes.
28:54It's called Frit Glazing,
28:56which means that a special type of ceramic paint
28:59is added to the window for protecting its sealant from UV rays.
29:03It also conceals and creates a coarser surface for the adhesive used to set the window in place.
29:10Whenever you're up for a drive,
29:12check out if there's a small tab under your car's rear-view mirror.
29:16Bet you didn't know it's there to help switch the mirror from daytime to nighttime views.
29:21It uses a prismatic glass technology to blur the reflection
29:25and reduce the glare of headlights behind you in traffic.
29:29People came up with these manually tilted mirrors in the 1930s,
29:33but they became standard somewhere in the 1970s.
29:37While you're in the car, check out the headrests,
29:39as you most likely don't know that they carry a little disguised purpose.
29:43Of course, they're adjustable to accommodate passengers of any height
29:47so that they get the proper support for their heads and necks.
29:50The hidden feature is that they are detachable
29:52and come with two very solid metal bars.
29:56Should you ever find yourself stuck in a car and need to make a fast getaway,
30:00these bars come in handy to crack out the car windows.
30:04So you're out for a drive and you're suddenly out of gas.
30:07What I'm about to describe sounds more like a meme than an actual situation bound to happen.
30:12But what if you're in such a hurry that you accidentally drive off
30:16with the gas nozzle still in the tank?
30:18Well, the nozzles have been designed to prevent any hazards from happening, rest assured.
30:23They feature a breakaway device that will allow the hose to separate
30:27when taken out with enough force.
30:30Initially designed in the early 20th century to be worn exclusively by basketball players,
30:35sneakers soon became one of those fashion fundamentals,
30:38similar to jeans and leather jackets.
30:41If you take a closer look at them, you'll see they have two extra holes on the side,
30:45similar to the shoelace holes.
30:47They're manufactured as such, not only to provide extra ventilation,
30:51but to allow people to get extra creative with their laces when wearing the shoes.
30:55Admit it, you've always thought that chopsticks are merged at the end for the sole purpose of
31:00keeping them together until you're ready to dig into your meal.
31:03That may or may not be the whole truth.
31:05Under a more detailed inspection, the wooden tools feature a square-shaped end.
31:11Chopsticks manufactured like this date back to an old Japanese traditional design,
31:15which can help with breaking the ends easily.
31:18The separated end can then be used as a resting block for the chopsticks
31:22to keep it more sanitized in hopes it can be used again,
31:25since they won't be touching the table or any other surface.
31:29Women's bikes have a special design, which, surprisingly, has a historical and fashionable purpose.
31:35The lower frame is for the most part meant to make up for the generally shorter height of ladies,
31:40compared to that of the average gentleman.
31:42While that is the case for handlebars and saddles,
31:46the overall frame is lower for an additional purpose.
31:49Way back when women wore long skirts and dresses all day,
31:52every day they needed to make sure their outfits wouldn't get caught in the frame.
31:57That's how we came up with a lower-framed bicycle,
31:59perfectly made for women and their needs at the time.
32:03The fact that toothpastes are multicolored is not just a nice perk to make dental hygiene more fun.
32:09There's a secret meaning related to each of the colors, which dates back to the 1970s.
32:15In those days, people grew more and more interested in their oral health care,
32:19and as such, they were looking for products which could do more than merely clean their teeth.
32:25One company was the pioneer in that regard,
32:28adding mouthwash to its toothpaste, meaning the blue strip.
32:31They later added on the red strip,
32:33meant to feature ingredients which helped with gum care.
32:37Speaking of toothpaste, check the cap next time you open a new tube.
32:41You may be in for a little surprise.
32:43There's a pointed cone shape inside the cap,
32:46so you can puncture the seal of the toothpaste without cutting yourself or ruining your manicure.
32:51Not to mention, it's more hygienic since you won't be able to transfer germs
32:54or other bacteria into the product itself.
32:58On the subject of bathroom countertop items,
33:01toothbrushes come with a neat add-on hidden in the bristle patterns.
33:05Apart from making the toothbrush look cooler,
33:07they also do come with a practical purpose.
33:10Most toothbrushes come with a pattern of blue bristles intertwined with white ones.
33:15The blue dye is meant to fade out,
33:17signaling the time when you need to replace your toothbrush.
33:21Dentists say that toothbrushes should be replaced every 3 to 4 months,
33:25but it does serve as a great reminder in case you forget.
33:28Still love playing with Lego?
33:30Don't judge.
33:31Hey, it's a great hobby for all ages.
33:33Notice there's a hole on top of the Lego heads?
33:36Behold, you're looking at a safety feature that the people at Lego
33:39designed to prevent choking hazards.
33:42The most dangerous issue should a person swallow any of these pieces
33:46is the blocking of the airways.
33:48Designing a hole inside the Lego head
33:50helps the air to flow freely through the piece
33:53until it can be removed safely.
33:55We're now used to all sorts of modern light bulbs,
33:58some tubular, some shaped like diamonds,
34:01and some even twisted all together.
34:04Historically, light bulbs were round
34:06and the initial shape served a purpose in itself.
34:09It was mainly connected to the fact that glass bulbs were hand-blown,
34:13which gave them the round shape to begin with.
34:15The hidden practical reason was that the light bulb filament
34:18needed to be at the same distance from every surface of the glass sphere.
34:22The easiest way to achieve this
34:24was to make the glass in the shape of a globe.
34:28You just spent the entire morning running errands up and down the street,
34:32and you finally stopped to treat yourself to a cup of coffee.
34:36You enter the nearest coffee shop, place your order,
34:39and notice that, actually, you really need to use the bathroom.
34:43It's a regular-looking public one with multiple stalls.
34:46As you pick yours, the one in the middle,
34:48you get inside and your mind starts to wander.
34:52Why on earth do bathroom doors have a half-inch gap
34:55between the door and the lock?
34:56And why on earth do they have a huge gap
34:59between the door and the floor?
35:01Can we have a drumroll for this moment, please?
35:04Well, my friend, there is not only one specific reason
35:07why public bathroom doors have so many gaps in them,
35:10but rather several.
35:12Public toilets are designed to make people spend
35:14as little time there as possible.
35:16You aren't supposed to feel comfortable or at home.
35:19So, the design would have to reflect this notion.
35:22Here come the gaps.
35:24In some bathrooms, gaps are so big
35:27that users may even feel self-conscious
35:29about doing their business out of preoccupation
35:32that the rest of the people standing in line will see them.
35:35Then, there's the matter of pricing.
35:38Making custom doors can be a heavy burden
35:40for the people building public toilets.
35:42This would mean understanding exact measurements
35:44so that doors would always fit the mold
35:47of the stalls it's supposed to be installed into.
35:50Now, not all the gaps in public bathrooms
35:52are necessarily the same size.
35:55They may vary.
35:56Even if this variation is small and often unnoticeable.
35:59So, these gaps actually help to reduce the margins of errors
36:03and to turn production more cost-effective
36:05for the people financing them.
36:07In case a door comes wider or more narrow than it should,
36:11the gap regulates the differences
36:13and allows for their installation anyway.
36:16There is also the case of air circulation.
36:18The last thing you want to do in a public bathroom
36:21is to trap odors.
36:23So, you need a little space under and between the doors
36:26to allow the air to flow.
36:28Finally, the gaps are a big safety measure.
36:31It can always allow for people on the outside
36:33to see if someone inside a stall isn't feeling too okay
36:36and maybe needs some help.
36:39And what about that extra hole in the upper part of the sink?
36:42It has a name in everything.
36:44The overflow hole.
36:45And it's designed to keep the sink from flooding.
36:48So, in case someone forgets and keeps the faucet going for too long
36:52or the sink gets clogged
36:54and water can't drain down from the main drain hole,
36:57the overflow hole comes in to save the day.
37:00Let's say it buys you a little time
37:02before you have the entire bathroom floor flooded.
37:04Have you ever noticed how satisfying
37:07closing the door of a car can be?
37:09Car manufacturers devote a great deal of time
37:12to designing these sounds.
37:13Studies have shown that they create
37:15a perceived sense of quality in the buyer.
37:18It all begins with the primary material.
37:20While older cars used to be made with heavier materials,
37:24car doors nowadays are produced with lighter tin,
37:27which can make a rather unpleasant metallic sound
37:30once you shut them closed.
37:31So, car companies employ sound engineers
37:34to ensure that there is the exact amount of foam,
37:37mats, and tin in a car's composition
37:39to make the most comforting sound possible.
37:42And what about those tiny dots
37:44on the top of your car's front window?
37:46The pattern of these little black dots
37:48minimizes distractions for your eyes.
37:51This black part, also known as frit,
37:54normally gets warmer than the clear parts,
37:56which prevents the windshield from deforming.
37:58And no, the tab under your rearview mirror
38:01is not made only for the purpose of hanging
38:03fluffy dice or aromatic-pleasing air fresheners.
38:07It's actually a switch that allows you
38:09to adjust the position of the mirror,
38:11depending on the time of day.
38:12Flip it one way, and it's the daytime driving mode.
38:15Flip the other, and you're ready to drive safely
38:18during nighttime as it tones down the glare
38:20coming from headlights of the cars behind you.
38:23Next time you head out to the supermarket,
38:26make sure to keep this in mind.
38:27In case you don't have a coin to unlock these shopping carts,
38:30there is a well-kept secret that can help you out.
38:33If you have your house keys on you,
38:36check for a rounded key head.
38:37If you happen to find one, try using it to unlock the cart.
38:41It should fit perfectly in there,
38:43replacing the need to carry coins around.
38:45Because, if we're being honest, who still has them?
38:49Elevators.
38:50If you want to ride them on your terms and your terms only,
38:53make sure to try something out.
38:55Most elevators have a secret button combination
38:57you can use to skip all the other selected floors
39:00and go directly to the one of your choosing.
39:03This might work out, especially on those days
39:05when you've pressed 13, but you wanted to press 33.
39:09On most elevators, this works once you simultaneously
39:12press the closed door button together with your floor number.
39:16This should help you get to your floor without stopping.
39:19Some elevators require you to double-press
39:21the selected floor numbers,
39:23as double-pressing will often cancel
39:25the previously made request.
39:27While other elevators require you to hold the open door button
39:31and then double-press the buttons of the floors
39:33you'd like to cancel.
39:34Now, to stay out of trouble,
39:36it's best not to cancel the floors
39:38of the other people in the elevator.
39:40They won't take it kindly.
39:42Also, keep in mind that there are elevators
39:44that might not have this function.
39:46Now, for honey lovers out there,
39:48go ahead and raise your hand.
39:49If your pot of golden honey is crystallized,
39:52know that it is actually a good sign.
39:55Crystallized honey means that it hasn't been pasteurized,
39:58which means better product quality.
40:00With a decrease in temperature,
40:02the natural ingredient of honey,
40:04also known as glucose,
40:06will make it crystallize.
40:07Now, try making the best of it.
40:09To add some texture to your oatmeal or toast,
40:12add a layer of crystallized honey
40:14and enjoy nature's sugar.
40:16And if you don't like crystallized honey,
40:18plop it in the microwave for a minute or two.
40:20Ah, winter and fall.
40:23You know what this means, right?
40:24Sweater weather.
40:25But there's nothing more annoying
40:27than wearing your beautiful wool sweater
40:29and itching yourself all the way through it.
40:32Actually, I can be more annoying than that,
40:34but let's talk about itchy sweaters.
40:36To keep this from happening again,
40:38here's the secret.
40:39Turn your sweater inside out
40:41and soak it in cold water.
40:43Add two or three tablespoons of vinegar
40:45and let it sit for a while.
40:47Then, drain the water.
40:49Now, while the sweater is still wet,
40:51massage a generous amount of hair conditioner
40:53into the fibers of the wool.
40:55After letting it soak in the hair conditioner
40:57for about 30 minutes,
40:59gently press the excess water out of the wool
41:02and leave it to dry flat on a towel.
41:04There you go!
41:05No more itchy sweater.
41:07Any fast food restaurant you go to
41:09will hand out small paper cups
41:11for customers to fill
41:13with their ketchup, mustard, or barbecue sauce.
41:15But if you're eating some chicken nuggets
41:17or trying to dip your burger into the cup,
41:20there's always that bit of sauce
41:22that seems impossible to reach.
41:24Next time, try unfolding the cup.
41:26It'll turn into a small paper plate,
41:29and this way, you'll get all the ketchup
41:31you poured in the first place.
41:33Padlocks used in outdoor environments
41:36should be clean and lubricated
41:37every three months.
41:39Regular lubrication will help prevent padlocks
41:42from freezing in cold weather conditions.
41:44Look for the tiny hole on the bottom of the lock.
41:47Then, pour oil into it,
41:48and there you go!
41:50It opens again!
41:51One thing we often neglect
41:53is a point in an ointment cap.
41:55These pointy surfaces were designed
41:57to help us break the tinfoil protection
41:59of the ointment tube.
42:01You just turn the cap over
42:02and break the ointment seal with its own cap,
42:05and there you go!
42:07After a long day of work,
42:09all you really need to do is a bubble bath.
42:11You turn on the hot water
42:13and let it run for a few minutes.
42:14You might even light a candle
42:16and pour some essential oils into the water.
42:19Then, in comes the liquid soap.
42:21You stir the water
42:23until the entire surface of the tub water
42:25is crammed with bubbles
42:26and make your way in.
42:28The bubbles in a bubble bath
42:30have a fundamental primary function.
42:32Their job is to preserve the water's temperature,
42:35just so you can have warm water for longer.
42:38Do you have sweaty feet?
42:39Weird question, I know.
42:41But if you're one of these people,
42:43here's some good news.
42:44All is not lost.
42:46Try putting a dry teabag inside your shoes
42:49and storing it in a dry place for a while.
42:52The teabags will absorb the humidity
42:54and the smell off the soles of your shoes.
42:56So, here I am thinking,
42:58shouldn't we have learned these things in school?
43:00Well, either way,
43:02if you learned something new today,
43:03make sure to tell us about it
43:05in the comments below.
43:13Have a good look at the front of your sweatshirt.
43:16Okay, let's ignore the pizza stains for now.
43:18Ever notice that V-shape
43:20right at the bottom of the collar?
43:21That small V-patch isn't just a decoration.
43:24It serves more than one purpose.
43:26Made from a double layer of webbing material,
43:28just like waistbands and cuffs,
43:30these inserts allowed the wearer
43:32to put on the sweater
43:33without losing any shape over time.
43:34As the sweatshirt would be pulled down over the head,
43:38the V-insert would stretch and flex
43:40to allow a lot of wiggle room.
43:42The other benefit the V-pattern gives
43:43is to absorb all that sweat.
43:45The chest is a major area of perspiring.
43:48Just look at soaked shirts
43:50after doing something physical.
43:51Although, the V-insert can only take so much.
43:55That extra pocket on the right side of a suit jacket
43:58is called the ticket pocket.
44:00They used to store coins for people on horseback
44:02to pay tollbooths without opening their jacket.
44:05When train travel became more popular,
44:07they were perfect for tickets and passes.
44:09As for the left chest pocket,
44:11it's used to store handkerchiefs,
44:13keeping them away from the other cluttered and dirty pockets.
44:16Metallic zippers have a hidden lock built in.
44:19Next time you've put on a pair of pants,
44:21shorts, or skirt,
44:22never leave the zipper handle in an upward position.
44:25Push the little zipper tab downwards,
44:27and it'll automatically lock.
44:29To mute your annoying beeping microwave,
44:32look closely at the front panel for a sound button.
44:34It may have been there all along,
44:36just begging to be pressed.
44:38If there's no button,
44:39try pressing and holding 1, 0, stop, or cancel.
44:43It will either result in turning off the beeping sounds
44:45or activating a lock feature.
44:47Of course, if your microwave doesn't have any mute function at all,
44:51you'll just have to keep running to stop the timer late at night.
44:54Nintendo Switch cartridges have a hidden safety function,
44:58and it's going to leave a bad taste in your mouth.
45:00Although non-toxic,
45:02Denetonium benzoate coats the cartridge
45:04in a sour, peppery, and bitter substance
45:06to prevent kiddos from swallowing them.
45:09This chemical compound is one of the most bitter flavors known to humanity,
45:13commonly used to keep people from consuming things they're not meant to.
45:16There's not much privacy while using a public toilet,
45:19especially when the door doesn't reach the floor at all.
45:22But these gaps are there for emergency access,
45:25in case the person inside needs immediate help.
45:28The gap also works for ventilation, thank goodness,
45:31and to stop people from lingering around the toilet too long.
45:35Toothpicks have a built-in holder
45:36to prevent you from just leaving them on the table.
45:39Just break off the top, it's that simple.
45:41Place that on your table and your toothpick between the notches.
45:45Pointy end up, of course.
45:46Now, it won't touch the table and get all dirty.
45:49You can do the same with disposable chopsticks.
45:51Break off the top piece before you pull them apart.
45:54Those tiny dimples on golf balls actually give a greater lift to the ball
45:58and reduce air resistance, meaning the ball can go further with them.
46:02These dimples come in spherical and hexagonal shapes
46:05with each slightest change affecting the ball's performance.
46:09So, choose them carefully.
46:11Plastic wrap boxes have hidden little holders
46:14that stop the roll from jumping out of the box.
46:16They're little cardboard tabs on the sides
46:19that lock into the tube inside while making it easy to glide the film out.
46:23Just push them in and never be frustrated again.
46:26Gosh, I wish that would work with other stuff.
46:29The seven spikes on top of the Statue of Liberty's crown
46:32don't represent the seven seas and the seven continents at all.
46:36They're representing the sun's rays,
46:38giving a halo to show that she is divine.
46:41In the United States, 12 different Federal Reserve Banks print all the money.
46:46So, if you want to know where your money comes from,
46:48just look for these small codes.
47:12Meanwhile, the bristles on the side of every escalator
47:18are in place to encourage people to stay away from the edge,
47:21meaning they're less likely to face a mishap with a trapped bag or shoelace.
47:25Did you hear about the octopus caught on the escalator?
47:28It was a stretch.
47:29Old-fashioned pin cushions that are large tomato with a strawberry attached
47:33are more than a place for your needles.
47:35The strawberry contains an emery board.
47:38When you stick your pins and needles into the strawberry,
47:41the emery board keeps them rust-free and sharpens them as well.
47:44Some people still forget to engage the hose from their car after filling up with gas.
47:49Luckily, a lot of gas companies realize this.
47:52So, if you happen to drive off with a hose still attached to your car,
47:56there's a magnetic connector that disengages when pulled.
47:59Those different colored bread tags use a color-coded system
48:02to show the day that they were baked.
48:04They are usually blue tags for Mondays,
48:07green tags for Tuesdays,
48:09red tags Thursdays,
48:10white tags Fridays,
48:11and yellow tags for Saturdays.
48:13On the back of most beauty products,
48:16you'll find a small symbol on the back
48:18that indicates how long it'll stay good for.
48:20For example, 2M means two months after opening.
48:24Some jackets have those extra flaps with a button on the shoulder,
48:28and they actually have a use.
48:30These are perfectly designed for holding your purse,
48:32backpack, or bag in place and secure.
48:35Pom-poms on the top of beanies were never just a fashion statement.
48:39They were for protection,
48:40placed on top of the headwear to protect sailors
48:43from accidentally hitting their heads while moving around on a ship.
48:47Pom-poms touch the roof, so don't go any higher.
48:50They don't appear on every type of measuring tape,
48:53but diamonds or black circles are there to help contractors
48:56measure the proper placement of studs in a wall.
48:59Those little holes on your baseball cap
49:02aren't some fashion trends that stuck around for years
49:05and have never been changed.
49:06These holes are actually called eyelets,
49:08and they're to keep your head well ventilated,
49:11not for appearance.
49:12If you have YKK printed on your zipper,
49:15they're not some secret code to be cracked.
49:17Those three letters appear on so many zippers globally
49:20because they're the symbol of the world's
49:22most universal zipper manufacturer,
49:25the YKK Group.
49:27Every can of soda comes with a tab
49:29for easy opening of the tasty beverage,
49:31and every single one of them
49:32has a relatively large hole in the top.
49:34While it can make it easier
49:36to get your finger under the tab to get your soda,
49:39its intended purpose is a straw holder.
49:42Spin the tab over the opening
49:43and place your straw through it to secure it in.
49:47Disposable lids do a great job
49:48of keeping your drink inside the cup,
49:50but that's not its only purpose.
49:52When you're ready to sip on your drink,
49:54the lid has specially designed ridges
49:56to double it as a coaster
49:57and hold onto the bottom of your beverage tightly.
50:00The tiny black dot between the lens and the flash
50:03on the back of your iPhone
50:04is actually for a great purpose.
50:06It's the third microphone
50:08to provide superior sound quality
50:10by eliminating background noises
50:12and to pick up your voice much clearer
50:14in a crowded environment.
50:16Gas cans that have two holes with caps
50:18aren't there to fill different-sized equipment.
50:21The second hole is meant to be uncapped
50:23before you pour your gas
50:25to prevent that glugging effect.
50:27By allowing more airflow through,
50:29the smoother the gas will pour out.
50:31That little arrow next to the gas symbol
50:33on your car's dashboard
50:35shows you which side your gas tank is on.
50:38It'll help you when you go fill up your gas tank,
50:40especially if you're borrowing
50:42a different car than your own.
50:44Look at a check and see MP near the signature line.
50:47That means the check printer used microprint
50:50as one of the check security features.
50:52The lines look like a regular line
50:54to the untrained eye,
50:55but they're words like the bank's name,
50:58authorized signature,
50:59United States government,
51:00or even original document.
51:02That little disc that's underneath bottles
51:05isn't just a leftover part
51:06of the production process.
51:08It creates an even tighter seal with the lid.
51:11So even if the bottle was turned upside down,
51:14the liquid doesn't leak out everywhere.
51:16The plastic disc keeps carbonated sodas
51:18carbonated for longer with this seal.
51:20The indent in the bottom of wine bottles
51:23is called a punt.
51:24But it's not just something
51:26to help you hold onto the bottle.
51:27The punt makes the wine bottle stronger,
51:29so if dropped,
51:31the cork won't fly across the room
51:32with all that pressure.