- 10 hours ago
Discover the surprising versatility of the paperclip, an everyday item that hides incredible potential. This video reveals how this simple tool can serve as a high-precision multi-tool for tech repairs, zipper fixes, and more. Uncover the science behind its design and why it's often overlooked. You'll be amazed at what a 1-cent item can do!
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00:00So, grocery carts have loops for a reason.
00:03You don't want to put your jacket in your cart next to a bunch of potatoes and onions, do you?
00:08Hang it on the loop instead.
00:10It's there to help you organize your cart better.
00:13Carts also have a cool section at the bottom.
00:16Whenever your cart's full, just lift it up and attach a shopping basket for extra purchases.
00:22Lift up the whole metal thing,
00:23sit your basket on the horizontal bar above the wheels,
00:27and secure it with those handy hooks.
00:30If you've got some pesky parsley stuck in your teeth, try this tip.
00:34It can be hard to get it all out with loose floss.
00:37You need more tension.
00:38Just tie it in a knot.
00:41Toothpaste stripes may seem a bit weird.
00:43It's just a marketing trick.
00:45Back in the 70s, a leading toothpaste brand added a blue stripe
00:50to show that their toothpaste had double action.
00:53Solid white toothpaste worked just as well.
00:55But those blue bristles on your toothbrush actually make sense.
01:01They gradually lose their color over time.
01:04When the blue's faded, it's time to change your toothbrush.
01:08Ever notice that tiny hole on the bottom of a padlock?
01:12Its hidden purpose is to drain water out to keep it from rusting.
01:16It's also the place to lubricate a padlock.
01:19A drop of oil in there will make it open and close way easier.
01:23Those ridges on the edge of dimes aren't just for show.
01:27People used to shave off the edges, then melt the edges down into new coins.
01:32But thanks to the new design, it's easy to tell if someone's been shaving the edges off.
01:38If you still struggle with peeling an orange, here's another way of opening it.
01:43First, cut off the top and bottom.
01:46Make a slit on the side and pull it open.
01:49That knobbly bit sticking out of the cap of your favorite cream is there for a reason.
01:54These tubes are usually sealed with foil.
01:57So, unless you love breaking your nails trying to open them,
02:00just flip the cap over and push.
02:03The tiny rubber disc under every bottle cap isn't just for seeing if you want a lifetime supply of soda.
02:11It's what keeps your drink all nice and bubbly.
02:13The lid keeps the liquid inside.
02:16The rubber disc keeps the gas inside.
02:19Until you drink it.
02:21If you use the blue side of your eraser to erase pen,
02:25your notebooks are probably all full of holes.
02:28The blue side's there for when you need to erase something on much thicker paper.
02:32It works on pencil and even ink, as long as the paper's thick enough.
02:37Your bobby pins might not stay in place if the grooves aren't facing the right way.
02:42They should always be on the bottom, close to your head.
02:46Still coming loose?
02:47Put a squeeze of hairspray right onto the bobby pin before you put it in your hair.
02:53Many glass bottles usually have some sort of indent at the bottom.
02:58It's handy if you want to be fancy.
03:00Put your thumb in the indent and pour away.
03:04The technical name for this little dude is a punt.
03:07Those sugar sticks at your local coffee stand are ready to be opened in a new and easier way.
03:14Look how happy they are!
03:15Try splitting it right down the middle.
03:18No more sugar on your fingers.
03:20No more tiny little paper bit.
03:22Even your coffee's happier.
03:23Your cotton rounds pack has those strings on it, so you can hang it on a handy hook in the
03:29bathroom.
03:30But there's no need to loosen and tighten back up again every time.
03:35Check out the bottom of the pack.
03:37It has a perforated line.
03:39Tear it open carefully, and you're good to go.
03:43Doorknobs are usually made of brass, bronze, or some other copper alloy.
03:47Why?
03:48They're antibacterial, so they stop microbes from spreading.
03:52Just a couple of hours, and the pesky microbes are gone.
03:56But don't forget to wash your hands anyway!
03:59Bottles have long necks for a reason.
04:02Hold the neck, not the bottle, if you want to enjoy a cold drink.
04:07Two zips too much?
04:08Maybe.
04:09But they come in handy as a clever anti-theft device.
04:13Just lock them together.
04:14Now, no one can open your backpack.
04:17Don't have a lock on you?
04:19You can also tie them together with some string, or even just a paper clip.
04:23Anything to slow those pickpockets down.
04:27That tiny little button on the back of a shirt collar is used to hold your tie in place.
04:32You don't want your tie trying to escape back there.
04:36Shoe manufacturers care about their customers.
04:38So, most running shoes now have a special anti-blister system, pre-installed.
04:45Hmm.
04:45Sounds intense, but it's basically just that extra hole on top of your sneakers.
04:50Make a loop with the extra hole, inserting the lace backwards.
04:55Cross your laces and put them through the loops.
04:58Now, pull the laces down to lock your foot in place.
05:01Now, run!
05:04You'll find silica gel packets when you buy bags, shoes, even some snacks.
05:09Don't throw them away.
05:11They soak up excess moisture.
05:13So, any times your shoes are a bit damp, chuck a few gel packets in there overnight.
05:19You might have been using your shampoo wrong this whole time.
05:23Really?
05:23Here's the gist.
05:25Don't apply it to your hair.
05:27Just apply it to the roots.
05:28The foam you create will trickle down on your hair anyway.
05:33Notebook margins aren't for taking extra notes or practicing emojis.
05:37They were invented to protect people's work.
05:40People used to live with a lot of hungry rats around.
05:44The rats would nibble at the paper, eating people's work.
05:47They put the margin lines there to let people know to start their writing further from the edge,
05:52so it's not lost to a hungry rodent.
05:55Solo cups are the key element for any barbecue party.
05:59But these red cups are even cooler than you thought.
06:02You can use them to measure liquids.
06:05The bottom line equals 1 ounce, the second line equals 5 ounces, and the third line equals 12 ounces.
06:13If you like milk on your tea, try this tip out next time.
06:17Pour it from the other side of the carton.
06:19It sloshes around less, and it's easier to control.
06:24Car headrests are all about comfort, and detachable headrests are all about safety.
06:29If you pull the headrest out, you'll see two sturdy metal bars.
06:34If you ever get locked or trapped in a car, you can use the bars to smash the window and
06:39get out.
06:41Women's shirts have their buttons on the left, even though about 85% of people are right-handed.
06:47It would make way more sense to have them on the right.
06:51The thing is, back in the day, wealthy women had maids to help them dress.
06:56So, for them, the buttons on the left made things much easier, don't you know?
07:03The tab on your rear-view mirror does have a real function, people.
07:07It holds your air freshener, your huge fuzzy dyes, maybe a big smiley emoji.
07:13But it's actually a switch between day and night mode for your mirror.
07:17When it's dark out, the night mode blocks the glare from the car behind you.
07:23The McFlurry spoon has a square handle on it.
07:26It gets attached directly to the ice cream machine, and the ice cream and toppings get mixed in together, right
07:32in your cup.
07:33It saves the employees loads of time, plus it saves water, because they don't have to wash the machine after
07:39each one.
07:41Wooden hangers are so hot right now, they could burn up your clothes.
07:46Nah, not really, but they look better and are more natural.
07:49But there's another reason to use them.
07:52They're made of cedar, which is a natural moth repellent.
07:55Bonus tip?
07:56Add some dry orange peel to your closet.
07:59No moth is ever going in there again.
08:04So get this.
08:05An extra hole at the upper part of the sink has multiple hidden functions.
08:09First, in case someone forgets to close the tap, the water won't overflow and the bathroom won't get flooded.
08:14Second, thanks to that hole, the water drains faster and it gives an escape for the air, helping the water
08:20flow down.
08:23Those two holes on a side of any Converse shoe are not only to let the stinky air out.
08:28Sure, breathability is important for any athlete.
08:30The second reason is that athletes lace through those holes to get a better grip.
08:37Donuts have a hole in the middle and it doesn't stand for O in donut.
08:41It's not designed for an easier grip either, though it can be quite convenient.
08:45It's actually made this way for mass baking, so that they can cook all the way through evenly.
08:52Baby carrots are tiny and, unlike regular carrots, wet.
08:56Baby carrots aren't some special sort of carrots.
08:58They're actually made of regular carrots by cutting off the skin and outer layers and then polishing them to look
09:05that pretty.
09:05The problem is that they can't retain moisture.
09:08A regular carrot retains some water inside because of the layers that locks it in.
09:12Once they're chopped out, baby carrots can dry out easily, so they usually sell them in bags with some water
09:18inside.
09:20Toy stores are filled with Beanie Baby plush toys.
09:23And a detail that is even more iconic than their huge eyes is their tags, saying T.Y.
09:29That's a small manufacturing company not so many people have heard of.
09:32Beanie Babies appeared in 1993 and they went insanely popular.
09:37T.Y. is the name of the company, but it's not an abbreviation.
09:40It's the actual name of the company's founder, H. Ty Warner.
09:46Most metallic zippers have a hidden lock inside them to save you from awkward situations, such as an undone fly.
09:53Oh boy.
09:54Don't leave the zipper handle in an upward position.
09:57When you pull it downwards, it automatically locks.
09:59It's all thanks to those tiny grooves hidden underneath the handle.
10:05Almost any public toilet has a large gap between the floor and the door.
10:09The reason for such a zero-privacy thing is to actually minimize the level of privacy and comfort,
10:15so that people wouldn't stay there long and there'd be no lines.
10:18It's also easier to clean, and safer if some emergency occurs.
10:25Headrests in a car are about comfort, and detachable headrests are about safety.
10:30If you pull the headrest out of a seat, you'll see two bars, which are quite sturdy.
10:35If you ever get locked or trapped in a car, you can get out of there smashing the window with
10:40these bars.
10:44Many cups and mugs have little grooves on the bottom on purpose.
10:47They're designed for dishwashing machines.
10:49The grooves let the water flow and not spill over your feet when you take the cup out.
10:54Also, those grooves let the air flow, so the cup doesn't crack even if the tea is scalding.
11:02Almost all measuring tapes have a metal tip with a small slot on the end.
11:06You can use this slot to hang the tape on a nail or a screw to make measurements without anyone's
11:11help.
11:13Sometimes, this tip has a row of sharp points along the edge on one side.
11:17That comes in handy when you want to leave a mark without using a pencil.
11:22Doorknobs are usually made of brass, bronze, and some other copper alloys for a reason.
11:27They have an antibacterial effect, so they stop microbes from spreading.
11:32They get rid of a range of harmful germs pretty fast within a couple of hours.
11:37But don't forget to wash your hands anyway.
11:41Grocery carts have loops for a reason.
11:43You don't want to put your jacket in a cart next to potatoes and onions.
11:47Hang it on a loop.
11:49This little hook-like thing is there to help you better organize the space in your cart.
11:53The carts also have a super handy grid.
11:57Whenever the cart's full, you just need to lift the grid and attach the shopping basket for extra purchases.
12:02Placing it in between the horizontal bar above the wheels and the hooks the grid has.
12:09A point in an ointment cap is there for a reason too.
12:12Most tubes are usually sealed with foil,
12:14and it's better to avoid opening it with fingers unless you're ready to say goodbye to your nails.
12:19A point easily opens even the most safely sealed tube.
12:25Silica gel can often be found in different things you buy like bags, shoes, and many others.
12:30Don't throw it away.
12:31It's meant to absorb excess moisture.
12:34So anytime your shoes are a bit wet, just throw in a packet with silica gel.
12:40People used to co-live with rats,
12:42and these guys like gnawing on everything they see in their way, including paper.
12:48Still, rats weren't able to chew more than the space left on the margins.
12:54That black grate on a microwave isn't just some fancy decoration.
12:57It's called a Faraday shield, and it prevents the rays from escaping the microwave.
13:02It also speeds up the heating, so you can enjoy yesterday's leftovers faster.
13:07It may also block phone signals.
13:09So if you're tired of numerous calls, just put the phone into a microwave.
13:13But don't turn it on.
13:17All Tic Tac containers are designed to dispense one Tic Tac every time you open it.
13:22The lid has the same shape as the candy.
13:25Turn the container upside down, gently shake it, and open it slowly.
13:28You'll notice only one candy stuck between those lid grooves.
13:32So if you just open the container and shake it until five or even more candies fall into your mouth,
13:37it means you've been eating Tic Tacs wrong all this time.
13:44Those little holes in the airplane windows are designed to control the cabin pressure.
13:48They also protect the windows from fogging up as the temperatures drop and rise.
13:52By the way, the airplane window is round for a reason.
13:55This way, pressure is evenly distributed so it doesn't get deformed.
14:02Blue bristles on a toothbrush are actually an indicator that it's just about time to change the brush.
14:07As the bristles get in contact with water, the blue, or whatever other, pigment fades away.
14:12So the more you use it, the duller the color becomes.
14:17A triple handle on a jerry can is there to make it easier for two people to carry it and
14:21distribute the fuel evenly.
14:23Gas cans often have a second hole that actually needs to be uncapped too before you pour the gas.
14:28The air passage will prevent it from pouring out, so no more fuel waste.
14:35Jeans first appeared in 1873.
14:37They were invented by Jacob Davis and Levi Strauss.
14:41Davis was a tailor who was producing covers and tents, and Strauss was a businessman who, among other things, was
14:48selling cloth.
14:50The first jeans were made by Davis from denim, the fabric he bought from Levi Strauss & Co.
14:56Together, they patented the design.
14:58Blue was a standard color for denim that was dyed using an indigo dye.
15:02The blue color is a tradition that is still often followed today to replicate the original look of a pair
15:08of jeans.
15:09Jeans also have metal rivets, and they've been there from the very beginning.
15:13Jacob Davis, the man who made the first pair of jeans, added copper rivets to spots where pants were more
15:19likely to rip, flies, and pockets to make them stronger.
15:22Today, they have more of a decorative purpose, since they're distinctive and traditional for jeans.
15:29Another special thing about jeans is those tiny pockets they have that seemingly serve no purpose.
15:35Well, maybe it's true now, but years ago, when many cowboys were wearing jeans, the pocket was made specifically to
15:41keep a pocket watch there.
15:43Also, back then, a pair of jeans had just four pockets.
15:46That tiny pocket, the watch pocket, two big pockets in front, and just one pocket on the back.
15:54Many zippers have the letters YKK engraved on them.
15:58It's an abbreviation that stands for the name of the company that can be translated as Yoshida Manufacturing Shareholding Company.
16:05This Japanese company is the largest zipper manufacturer in the world, so they put their initials on all the zippers
16:12they produce.
16:12That's around half of the zippers in the world.
16:15And that's why you see their zippers more often than any other zippers.
16:21Those little white golf balls have dimples all over them.
16:24It turns out they aren't there just randomly.
16:26At first, golfers were playing with a smooth ball.
16:29With time, the ball would get all punched and damaged, but also, it would start to travel way further.
16:34The reason here is aerodynamics.
16:37Dimples allow the air to flow more smoothly around the ball, taking it further.
16:42So the idea was adopted, and the balls got their dimples all around, allowing them to travel longer distances.
16:49For all those days when you barely have time for breakfast, there's an easy way to enjoy a nice and
16:55fast meal.
16:56And it will also save you the hassle of doing the dishes afterwards.
17:00I'm talking about instant oatmeal packets.
17:02Some manufacturers have added this neat design to the oatmeal.
17:07The packet is lined with plastic, so you can directly pour water or milk straight into it.
17:12This way, you won't have to use a bowl anymore.
17:16You place the liquid in and shake.
17:18Some packaging also has a demarcation line to show how much liquid should go inside the pack for that quantity.
17:26Next time you have to switch apartments, you won't have to worry about carrying that heavy box of books.
17:32These days, most moving boxes are specially designed for easy transportation, with built-in handles.
17:38Well, they're not actually handled.
17:40I'll admit, they're basically just holes inside the cardboard box, on the sides.
17:45But if you slip your hands in, you'll surely notice the boxes become way easier to carry than picking them
17:51up altogether.
17:53With the onset of so many online reading options, like e-books or even apps on your phone that allow
18:00you to download novels,
18:01you've most likely forgotten about your local library.
18:04And hey, I'm not blaming you!
18:07But libraries these days offer a lot more services than you're used to, apart from free books and audiobook rental.
18:14Some of them have a variety of evening classes or can provide access to online courses.
18:20You may even be able to join a book club, which is a great way to meet new people,
18:24and you're guaranteed to get out of that reading slump you've been stuck in.
18:29I enjoy picking up dinner on my way home from my favorite takeout place, just as you do.
18:34But if the food containers are not completely sealed shut,
18:37the ride back can prove itself quite the culinary experience, if you know what I mean.
18:42Especially for the carpets in your car.
18:46Some cars have a curry hook near the center console, next to the driver's seat.
18:50It has been popular for 20 years and started as a handbag holder or a hook for a small shopping
18:55bag.
18:57But it quickly became the perfect way to store takeaway food and avoid spilling.
19:03I'm almost sure there's an umbrella somewhere in your car,
19:06but if I were to ask you where you're storing it, you'd most likely say, the truck, of course.
19:11But is that really the best place to keep it?
19:14Wouldn't you want to have an umbrella at hand, right when you get out of the car?
19:18Some car companies have thought about that, and don't worry,
19:21they don't come with a built-in butler to help you get out of the car all dry.
19:26Some specific models have a designated place in the driver's door panel that perfectly fits an umbrella.
19:32You have to admit, it's an important thing to consider when researching your next car,
19:35more so if you live in a rainy location.
19:39Whenever I plan to travel to a new location,
19:42I like to have access to the local maps on my phone at any given time.
19:46Since you can't always foresee the quality or price of the internet in foreign countries,
19:51be sure to download the maps on your phone when connected to Wi-Fi.
19:55This way, you'll have easy access to all the must-see locations on your next city break,
20:00even if you run out of mobile data.
20:03The same goes for Google Translate.
20:05The mobile app comes with the option of downloading a language,
20:08so you'll be able to use it offline.
20:11Another nice tip if you're more of the traveler type.
20:14If you own an iPhone, text an airline code and flight number to yourself.
20:19You'll then notice it will show up with an underline.
20:21When clicking on it, you'll be able to pull up flight data,
20:24like the gate the flight leaves from, or if the flight is on schedule.
20:30Flashlights are those objects that we tend to reach out for in an emergency,
20:34like whenever there's a power break,
20:36or when you need to take a quick trip in the attic for an old photo album or something.
20:40If you're ever in a sticky situation and the flashlight runs out of battery,
20:44have a look at its base under the battery spring.
20:47Some models come with a spare bulb hidden in there.
20:52If you're the type of person that likes to wake up early in the morning,
20:55but the rest of the people in your house enjoy sleeping in,
20:58there's a way you can still use your microwave to prepare breakfast without waking everyone up.
21:03It turns out, some of them come with a built-in mute function
21:06that gets rid of all the annoying rings and beeps.
21:11In the many times I've found myself driving on local roadways,
21:14I've noticed some apparently random blue reflectors here and there.
21:18Since I had no idea what they were,
21:20I did some research and found out they actually pinpoint the locations of fire hydrants.
21:25They're generally offset from the center line on either side,
21:28and the offset side tells if the hydrant is on the left or right side of the road
21:33to assist firefighters on their missions better.
21:37Next time you get out of the car and forget to close all the windows,
21:40you won't have to get back in there.
21:43Just try this.
21:44Hold the keys on the door of your car pressed,
21:46and it should lock all the doors and shut all the windows.
21:50The same goes with opening all the doors.
21:53Just double-click the button.
21:55Most car models should come with this added option,
21:57but most people just forget or have no idea that they can do that.
22:02Whenever you're in that awkward position of messing up a voicemail,
22:06do you know there's a way you can delete or re-record the message,
22:09saving you the unnecessary embarrassment?
22:12Stay online after recording the message
22:14and dial either pound, number sign, or star, asterisk
22:18to access the voicemail menu.
22:20Further instructions should be provided
22:22so you can decide what to do with the recording.
22:26Bagels are becoming more and more famous these days
22:29on options for breakfast or snacks
22:31because they're so tasty and so versatile.
22:34The problem is, I only want my bagel toasted on one side.
22:38Thankfully, some toasters come with a bagel setting,
22:41which ensures the pastry is toasted on either one of the two sides.
22:47Ever wondered why manhole covers only come in that round shape?
22:51It turns out that this is the only shape
22:53that cannot fall through the hole altogether.
22:56Any other shape, especially shapes with corners,
22:58could be rotated so that the lid could fall through.
23:03Here's a neat one if you enjoy a little massage
23:05whenever you're taking a shower.
23:07On most of the shower heads available these days,
23:09there should be a small metal filter in the back
23:12beneath the shower head once you unscrew it.
23:15If you give this piece a rough cleaning once in a while,
23:18you'll find the water pressure to be greatly improved.
23:23You may be able to save that wool sweater
23:25you've accidentally thrown in the washer
23:26and has shrunken down three sizes.
23:29Just go in the shower and grab a bottle of hair conditioner.
23:32Add it to some cold water in a tub
23:34and make a solution
23:35and let the garment sit there for at least a couple of hours.
23:39The conditioner should help relax the wool fibers
23:42and loosen them back up,
23:44not to mention how nice it should smell afterwards.
23:48You might need to do a bit of research
23:51before you can safely use this trick.
23:53But just so that you know,
23:54there are some modern laptops with drainage channels.
23:58Mm-hmm, you heard that right.
23:59Precisely when you accidentally spilled coffee on it,
24:02they're designed to ensure any liquid that gets on the keyboard
24:04safely drains out at the bottom
24:06without damaging the electrical parts.
24:09Just make sure to not shake the laptop
24:11after you've spilled the liquid
24:12so that the system can do its job correctly.
24:20Road and construction workers are usually dressed in orange
24:23because the bright orange hue is visible even in bad weather.
24:27It's the most effective color
24:28to attract attention and alert people.
24:30No wonder lots of safety jackets and traffic cones
24:33are orange as well.
24:34The stop sign has an eight-sided shape
24:37to help drivers recognize it easily,
24:39even if they see it from the back.
24:41And when the signs weren't reflective yet,
24:43the octagon shape prevented drivers
24:45from confusing the stop sign with any other at night.
24:48The rumble strips on the side of the road
24:51are placed there to alert drivers
24:52who doze off behind the wheel.
24:54When their tires move over these strips,
24:56the noise and vibration work like an alarm clock.
24:59There are magnetic locks on fuel hoses at gas stations.
25:03They come in handy if someone drives away
25:05with the gas nozzle still attached to their car.
25:08In this case,
25:09the lock detaches the hose automatically.
25:11Oh, that's embarrassing.
25:13Gasoline looks like a rainbow in a puddle
25:15because it can't mix with water.
25:17It forms a thin membrane over it.
25:19When light reflects from it
25:21and the water at the same time,
25:23you've got a rainbow.
25:25A triple handle on a jerry can
25:27is there to make it easier
25:28for two people to carry it
25:29and distribute fuel evenly.
25:32Gas cans often have a second hole
25:34that actually needs to be uncapped too
25:36before you pour the gas.
25:37The air passage will prevent it from pouring out,
25:40so no more fuel waste.
25:42Most gas cans have two holes with caps,
25:45a bigger and a smaller one.
25:47You're supposed to uncap the smaller hole
25:49before pouring gas inside the bigger one.
25:51It'll prevent the liquid from glugging
25:53and spilling all over your clothes and the ground.
25:57Another little thingy we often neglect
25:59is a point on an ointment cap.
26:01Most tubes are usually sealed
26:03with a plastic film or a foil,
26:04and opening it with your fingernails
26:06isn't the best idea.
26:07A point easily opens
26:09even the most safely sealed tube.
26:12You can use most screwdrivers together
26:14with a wrench to create more torque.
26:17Just place the wrench
26:18over the handle of the screwdriver.
26:20This way, you'll need to apply
26:22a lot less force than before.
26:24You'll also be able to get
26:25to hard-to-reach areas more easily.
26:28They install cameras in shops,
26:30banks, and hospitals
26:32to monitor everything.
26:33If something happens,
26:35you can call the police or rescuers.
26:37The camera really helps
26:38to solve a lot of problems.
26:40Why are there no cameras on planes?
26:43The crew keep order on the plane,
26:45but they won't be able to do anything
26:46if something serious happens.
26:48Besides, there's nowhere to run on the plane.
26:51During the flight,
26:52the cameras are useless,
26:53and after the flight,
26:55the words of the passengers
26:56work ideally instead of cameras.
26:59So, if cameras do no good,
27:01then why spend money on them?
27:03Water is great at cleaning stuff
27:05because it has triangular molecules.
27:07They're made of one oxygen
27:08and two hydrogen atoms.
27:10Um, H2O?
27:11Such molecules have slightly different charges
27:14on their opposite sides,
27:15pretty much like magnets.
27:17That's why water easily sticks
27:18to other molecules,
27:19including those that make up dirt.
27:22Lots of private houses
27:23have triangular-shaped roofs
27:25because this allows rain,
27:26snow, and fallen leaves
27:28to slide off the slope.
27:29If all this stuff piled up
27:31on top of your house,
27:32one day, your roof would collapse.
27:35When a storm is coming,
27:37clouds seem to turn dark,
27:38but it's just an illusion.
27:40Thin clouds on a sunny day
27:41let the light through easily.
27:43They also scatter all the colors
27:45of the light spectrum.
27:46This makes us perceive
27:47the clouds as white,
27:49but the thicker the clouds are
27:50and the more water droplets
27:52they contain,
27:53the less light they let through
27:54and the darker they look.
27:56A good doorknob is the one
27:58made of brass, bronze,
28:00or some copper alloys.
28:02These metals have an anti-germ effect.
28:05Bacteria spread way slower on them.
28:08They also get rid of germs
28:09pretty fast,
28:10within a couple of hours.
28:11Nope, it doesn't mean
28:12you don't have to wash your hands.
28:15Diamonds have such symmetrical shape
28:17to show you their brilliance.
28:18Initially, the gems
28:19aren't so beautiful.
28:21They go through several stages
28:22of cutting
28:23and then become pieces of elegance.
28:26Most of these stones
28:27have a round shape
28:28with slightly pointed corners.
28:30Diamonds shine the brightest
28:31in this shape.
28:34Why are there two holes
28:35in the socket?
28:36The left hole is neutral,
28:38the right hole is not,
28:39and the gap underneath
28:41is ground.
28:42Electricity needs to flow
28:43through the chain.
28:45The current flows
28:46from the hot slot,
28:47passes through your phone charger,
28:49for example,
28:49and then goes through
28:50the neutral hole.
28:52Ever wondered
28:53what that small pocket
28:54on your jeans is for?
28:55People used to wear watches
28:56on chains.
28:57That small pocket
28:59was meant for it.
29:00Now, almost no one
29:01wears such a watch,
29:02but the pocket remains.
29:04You can still keep
29:05something small in there
29:06like a ring.
29:07In London,
29:08there are some poles
29:09that look like street lamps,
29:10but there are no bulbs.
29:12Well, their official name
29:14is stink pipes,
29:15and they're a thing
29:16of the past now,
29:17but they used to come in handy
29:18back in the 19th century.
29:20These hollow poles
29:21would vent away the air
29:23and explosive gases
29:24with bad smells
29:25to prevent,
29:26shall we say,
29:27unwanted consequences.
29:29Most kitchen shears
29:30have metal plier-like teeth
29:32in the middle.
29:33Between the handle grips,
29:34they can help you
29:35crack nuts,
29:36crab shells,
29:36and other tough products.
29:38You can also open jars
29:39and bottles
29:40or remove herb stems
29:41with their help.
29:43Leather often looks dull
29:45to the eye
29:46because it's covered
29:46with itsy-bitsy scratches
29:48and scrapes.
29:49They scatter the light
29:50that hits the material.
29:51When you coat your shoes
29:52in a layer of wax,
29:54you fill these tiny crevices.
29:56The surface becomes smoother,
29:58and the rays of light
29:59bounce off it more evenly.
30:00That's why
30:01the leather looks shiny.
30:03Highlighters are filled
30:05with a special
30:05semi-transparent fluorescent ink
30:07that can glow
30:08in dim light.
30:10Yellow and light green hues
30:11are the most popular
30:12because they don't prevent you
30:14from seeing the text
30:15after black and white photocopying.
30:18Photocopiers perceive
30:19yellow and light green marks
30:20as very pale
30:21and don't print them.
30:23They make magnets
30:24shaped as a horseshoe
30:25because this increases
30:26the magnetic force.
30:28Colors matter too.
30:29The blue part
30:30indicates the south pole,
30:31the red part
30:32the north pole.
30:33The two poles work simultaneously
30:36and increase the attraction force.
30:38The dime-sized holes
30:40in elevator doors
30:41is actually a keyhole.
30:43If the doors get stuck,
30:45an operator can open them manually
30:46thanks to this hole.
30:48They'll just insert a special key.
30:50The tiny hole
30:52in the airplane window
30:53is there to balance air pressure.
30:54The window has three layers.
30:57The outer pane
30:58is extremely sturdy.
31:00It can withstand
31:01air pressure differences
31:02during takeoff and landing.
31:04The inner pane,
31:05which is the closest to you,
31:06is made of cheaper materials.
31:08It prevents potential damage
31:10to the window.
31:10The hole itself
31:11is in the middle pane.
31:13It not only balances the pressure
31:15but also prevents the window
31:16from fogging.
31:19Escalator brushes
31:20are there for your safety.
31:21They don't allow you
31:22to come too close
31:23to the edge of the escalator.
31:24This way,
31:25your clothes won't end up
31:27between the steps.
31:28You see the sun
31:29as yellow or orange
31:30because the atmosphere
31:32of our planet
31:33scatters such colors
31:34as blue, green, and violet.
31:36This is also why
31:37the sun looks warmer
31:38at sunrise and sunset.
31:41Go shopping for some oranges
31:42and I'm sure you'll get them
31:44in a red mesh bag.
31:45You'll rarely see them
31:46lying around
31:47without one of those.
31:48It's pure marketing
31:49and that color
31:50isn't a random choice.
31:51When packed in a red mesh bag,
31:54oranges appear more orange,
31:56fresher,
31:56and more appealing to you.
31:58So, you're more likely
31:59to buy them, right?
32:00Lemons are usually sold
32:02in green mesh bags
32:03for a similar reason.
32:05If you pack them in red,
32:06they'll appear more orange.
32:08Green goes better with yellow
32:09and makes those lemons stand out.
32:12Mattress manufacturers
32:13make a limited number
32:15of different mattresses
32:16and the only way
32:17to make them look different
32:18is to come up
32:19with a fancy stitching pattern.
32:20Two mattresses
32:21of two different companies
32:23might be the exact same quality
32:24but cost differently.
32:26Most people will never know it
32:28and will decide
32:28that different patterns
32:29mean something
32:30in terms of quality.
32:32So, when shopping,
32:33don't mind the pattern at all.
32:36Almost all hotels
32:37have white bed sheets.
32:38They choose this color
32:39specifically to show
32:40how high their standards
32:41of cleanliness are.
32:43The whiter and brighter
32:44the sheets are,
32:45the more luxurious
32:46the hotel seems.
32:47It's much easier
32:48to see dirt and stains
32:49on white linen.
32:50It's like proof
32:51that you've checked
32:52into a clean room.
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