- 1 day ago
Unlock the astonishing potential of everyday items you thought you knew! From the surprising features of your tape measure to the clever design of your sneakers, this video unveils the remarkable functions that have been overlooked. Dive into the world of creative engineering and learn how your common tools hold extraordinary capabilities. You’ll be amazed at the safety features and hidden tricks waiting to be discovered in your daily life.
Category
😹
FunTranscript
00:00If you ever find yourself stuck in the trunk of your car, stay calm.
00:04All cars are supposed to be equipped with an emergency latch
00:07to help open the trunk from the inside in the unlikely case it happens.
00:12These latches are so well thought out that they can be opened by people of all ages.
00:17More so, handles are designed to glow in the dark, too.
00:20You can even pull them with a mouth if there's not enough wiggle room to use your hands.
00:25Never mind how you ended up in the trunk in the first place.
00:28Moving on!
00:29If you're ever working with needle and thread,
00:32remember you don't need to stick the needle directly into the spool.
00:36You may end up losing the needle altogether.
00:38Not to mention you can easily hurt your fingers!
00:41A lot of modern sewing kits these days come with a designated place for safeguarding the needles.
00:47It's located at the bottom part of the thread spool.
00:50You'll just need to pull it out.
00:51It's even made to hold multiple sewing needles at a time.
00:56Disposable ballpoint pens come with a little secret of their own.
01:00Did you ever notice that in some of them, there's a small hole in the plastic part?
01:04It's actually a rudimentary ventilation system.
01:08It's supposed to let the ink easily make it to the tip of the pen.
01:12Okay, I know it's in the name, but you really don't need to shake the seasoning shaker to get any
01:17product out.
01:18Don't believe me?
01:20Hey, you're not the only one.
01:21Go grab your favorite seasoning bottle out of your pantry.
01:25If it has one of those removable plastic caps, it's perfect for the experiment.
01:30Instead of shaking the bottle, try holding it from the plastic cap while it's upside down.
01:35Now gently twist the bottle from side to side and, before you know it,
01:40you get some gorgeously flowing seasoning without having to wiggle the shaker and make a mess all over the stove.
01:47On the same note, most salt and pepper shakers should have ridges on the bottom of the glass portion.
01:53In case you get any seasoning stuck in there,
01:56place the bottom of the salt shaker against the bottom of the pepper shaker and wiggle it around,
02:01so the ridges click with each other.
02:03The seasoning should easily pour out now without you having to open the bottle.
02:08In colder weather, you often have so many clothing layers on you
02:12that you can hardly feel the purse or back straps on your shoulder anymore.
02:16Not to mention how fast they can slide off.
02:19Some jackets come with a built-in solution for that,
02:22in the form of a small tab on the shoulder with either a hook or a button.
02:27It's meant to be opened and closed comfortably,
02:29so you can keep your purse in place at any time.
02:34You're most likely using it merely to peel the skin of potatoes, carrots, or cucumbers.
02:39But you can use your vegetable peeler for chopping fine strips of onion as well.
02:44Just cut the onion into quarters vertically and then start slicing.
02:48This might also help out with those embarrassing onion tears.
02:53Most people miss this one, but should you ever have a closer look at your toothpaste tube,
02:58you will surely see some sort of coloring there, either a dot or a block.
03:03Colors can vary.
03:04They can be black, green, red, or even blue.
03:08These color spots are actually meant to help the assembly machines back at the toothpaste factory.
03:13They recognize when and where these machines need to cut the toothpaste tubes
03:17and proceed to fold them for packaging.
03:20For most types of footwear, if there's anything that seems a bit out of place,
03:24always know that it's there for a reason.
03:27Most manufacturers don't put extra items on shoes just for fun.
03:31It would definitely be a waste of time and resources.
03:34For footwear, like boots, for example, there's often a small loop at the top back of the shoe.
03:40It's there to help you when you need to put the shoe on, since you can quickly pull on it.
03:44Plus, you can also hang the shoes somewhere, most likely to dry,
03:48since most boots are meant to be worn in the colder weather.
03:52Now, I've been guilty at least once of overdressing with a bunch of layers,
03:57just so I won't need to jam everything in my check-in bag.
04:00But does it become a problem when you actually have to get seated?
04:04What do you do with your coat or your jacket?
04:06Well, have a closer look next time you board a plane on the seat in front of you.
04:11The hook that keeps the tray table upright can double as a jacket hook.
04:16As long as you don't need to have any meals while in the air, you're good to go.
04:21Now, most mascaras expire within 3 to 6 months, I'm told, depending on the manufacturer.
04:27But you can help speed up that process if you're not careful enough.
04:31Continuously pumping the mascara wand, trying to mix in the product,
04:35actually pushes more air into the tube.
04:38This can make it dry much faster,
04:40and you evidently won't get the desired results with it anymore.
04:44There's an easy way to check if your mascara is still good enough to use.
04:48If you don't hear a popping noise when you take the brush out,
04:52you may very well need to go get yourself a new mascara tube.
04:55Now, I know we're living in the era of Bluetooth-connected devices,
05:00but for better quality sound, they still recommend using headphones that connect via audio jacks.
05:07Remember seeing black ridges on those jacks?
05:10They aren't there just to make them fit when you plug them into your phone or laptop.
05:14Made out of a special insulating material,
05:17these bands are meant to guard the wires when sound is being transmitted.
05:21Based on the number of bands, you can figure out which end goes where.
05:26Some empty space under noodles in a cup doesn't mean the company producing them
05:30wants to cheat you out of a full portion.
05:32No, no.
05:33It's a manner of keeping the noodles intact during their transportation.
05:37It also helps with the circulation of hot water
05:40that is poured over the products before you can enjoy them.
05:43The V-shaped neckline was initially designed to serve a bunch of objectives.
05:48First, as a way of prolonging the life of the garment
05:51that would maintain its shape over the years.
05:53It's also there to fit your head through the shirt in case it needs some stretching.
05:58This way, it ensures a snugger grip around the neck.
06:01Lastly, it helps absorb sweat in case you're wearing the shirt while exercising.
06:06Now, it's not necessarily a custom anymore,
06:09but you may have stumbled upon a dinner jacket
06:12with an additional mysterious pocket on the right side.
06:16Turns out, this pocket was used by men to easily reach their train tickets,
06:20since most of them had to travel to work every day.
06:23It helped them keep their jacket buttoned up,
06:26but also benefited from the use of a pocket.
06:28Now, it's only added as a decoration,
06:31and it doesn't serve an actual purpose anymore.
06:34Speaking of things we don't use these days,
06:37or at least for their initial purpose,
06:39did you know Play-Doh was originally a cleaning product?
06:43In the 1920s, the market was in need of a product
06:46that could help them wipe the wallpapered areas around coal-burning furnaces.
06:50The recipe for what we now know as Play-Doh was thus invented.
06:55It was manufactured in white only,
06:57and was supposed to clean wallpaper by being rolled back and forth over the dirt.
07:02It was only later, in the 1940s,
07:05that new products for cleaning wallpaper were brought up,
07:08and Play-Doh was redirected toward another area of the market.
07:12Now, while I enjoy a nice piece of toast for breakfast,
07:16isn't it pesky to have to clean out the toaster?
07:19Well, not anymore,
07:20since I recently found out that toasters have a slide or a panel at the bottom
07:25that helps get rid of all those annoying breadcrumbs easily.
07:32Now, there used to be a time when you could only have access to video games
07:36by inserting cartridges in your console of choice.
07:39These tiny objects gave many doctors a lot of headaches.
07:43People soon started popping up in hospitals after swallowing small game cartridges,
07:49especially the younger generation.
07:51Nintendo, the company that manufactures the majority of these devices,
07:55had to come up with a creative solution to prevent these accidents.
07:59So, these days, Nintendo Switch cartridges are purposely coated with specific chemicals
08:04that can leave a really bad bitter taste in the mouth.
08:08Not that I'd, you know, recommend you ever try and taste for yourself.
08:11Hmm.
08:13Black stripes on yellow school buses aren't an element of design.
08:17They're actually metal rails put along the sides and the back of the bus
08:21to protect its rather thin walls.
08:24In case of a collision, they absorb most of its force.
08:27It means that the crash doesn't affect large areas.
08:30These rub rails are also positioned in strategically important spots.
08:34The lowest one runs at the floor level.
08:37The middle one matches the bottom of the seats,
08:39and the top one corresponds either to the top of the seats or the bottom of the window.
08:46Your ceiling fan can move in more than one direction for a reason.
08:49One is for summer, the other for winter.
08:52When the weather is hot, ceiling fans should move counterclockwise.
08:57This makes them pull the warm air up and push the cold air down.
09:00And the clockwise, winter mode moves the warm air down and raises the cool air.
09:08As soon as you notice the blue bristles on your toothbrush start fading,
09:11it's a sure sign it's time to replace it.
09:15You can adjust your stapler so that it staples documents together only temporarily.
09:20It's done by rotating the crimp area.
09:23Most staplers have two options for stapling.
09:26One is standard, but the other side bends staples away from the center.
09:30Later, when you don't need them anymore, you can easily remove them by hand.
09:36Lots of people use a knife to remove strawberry stems.
09:40But this way, they throw away a lot of stuff they could otherwise eat.
09:44Instead of a knife, use a regular drinking straw.
09:47Insert one end of the straw into the bottom of the strawberry and push it gently all the way through.
09:53If everything goes as planned, the straw will pop the stem out.
09:57A tiny hole in a padlock bottom helps to drain the water from an outside lock after the rain.
10:04It prevents the thing from rusting and clogging.
10:06You can also use this hole to oil the lock's hinges so that it doesn't get stuck.
10:11If a lock doesn't have this small hole, you should only use it inside.
10:17It's a bad idea to place dirty dishes covered in mashed potatoes or any other leftover carbs
10:23closer to the sides of the bottom shelf of your dishwasher.
10:27Several studies have shown that such plates get washed better when you put them in the middle of the rack.
10:33So now you know.
10:35Weird markings on the bottom of a toothpaste tube have nothing to do with the ingredients.
10:40They're actually there for the factory robots.
10:42Not so they can brush their own teeth, either.
10:45Such a colorful square marks the line where the tube has to be cut and folded.
10:51Now, most cotton pads have two different textures on each of their sides.
10:56One surface is firmer and more absorbent.
10:58It's supposed to be used with nail polish remover.
11:01The other side is way finer and softer.
11:04You should use it to remove facial and eye makeup.
11:08Don't peel post-it notes off from the bottom.
11:11It'll create a crease in the paper, and the note won't stick well after that.
11:15Tear it off from the side, and it'll stick longer.
11:20When driving when it's already dark, you might get blinded by the headlights of the car moving behind yours.
11:26If you have a manual rearview mirror, find a tab at the bottom and flip it.
11:31The mirror has a reflective material behind its glass.
11:34By flipping the tab, you change the angle of this material, dimming the lights in the mirror.
11:40The whole process is even simpler if you have a power mirror.
11:43All you need to do is switch on the nighttime mode.
11:48Bath foam relieves stress, cleanses the skin, and keeps the water warm.
11:54Foam is made up of tiny air bottles.
11:56They form an insulating layer on the water surface, keeping the heat from escaping.
12:02Let's say you're reading a paper book.
12:05Then you decide to take a break and realize you don't have a bookmark.
12:09Should you leave a dog ear?
12:11You don't need to.
12:12That's what the dust jacket is for.
12:15Apparently, providing you with the information about the book and its author isn't its only purpose.
12:21Your stomach growls, and suddenly, a peanut butter sandwich sounds like a great idea.
12:27You open a jar and see quite a lot of oil sitting on the top.
12:32Duh!
12:33Time to train your arm muscles and stir, stir, stir!
12:36But if you store peanut butter jars upside down, the oil will move to the bottom, and all the solids
12:43will be on top.
12:46The main purpose of the drawer under your oven isn't to store all those pots and pans.
12:51You're supposed to use this place to keep your food warm while something else is being prepared in the oven.
12:58If you don't have anywhere to put a toothpick after using it, snap off the flat end at the first
13:04groove and put it on the table.
13:06Now you can balance the used part of your toothpick on the groove part, so it doesn't have to touch
13:12the table.
13:14The correct way to break off a piece of Toblerone chocolate bar is by pushing the pointy side downward.
13:20Me? I just bite it off, but then I'm hardly ever accused of being correct.
13:26Most extension cords are known to come undone at even the slightest pull.
13:31Loosely tie them together, and they'll stay connected even if you accidentally pull on them.
13:37The knot might get tighter, but nothing will get switched off.
13:42A little groove on the bottom of a cup lets cool air get underneath it.
13:46It saves glassware from cracking when a scorching beverage heats it up.
13:51And when you place cups upside down in the dishwasher, the groove prevents water from gathering in the cup's bottoms.
13:59Non-stick pans have a special coating, which makes them so great.
14:03But if you use metal utensils while dealing with such a pan, you're likely to scratch this coating.
14:10And once you do it, your pan is ruined.
14:12Food will stick to its surface and end up burned or unevenly cooked.
14:19Make your life brighter and get a bright side to eat.
14:22Pick your own print, just follow the link below.
14:24If you've always peeled bananas, starting from the stem, try doing it the other way around.
14:30Pinch the bottom of the banana and pull.
14:33This way, you don't have to deal with strings and mess.
14:36By the way, that's the approach monkeys use.
14:39And you don't want to argue with monkeys.
14:43Most caps on small tubes are hollow on top and have a little spike inside.
14:48Its purpose is to break the foil sticker sealing the tube.
14:52The neck of the tube fits right in this hole, and the spike is designed to break the seal.
14:57No need to struggle trying to tear the tiny foil seal off with your fingers.
15:03The more detergent you use, the cleaner your clothes are, right?
15:07Not exactly.
15:08If you add too much detergent, you can spoil your things.
15:11This will produce too many suds, and your clothes won't be rubbing against one another.
15:16And that's exactly what helps them get clean.
15:20Excess suds can also keep your washing machine from rinsing properly.
15:24Book pages are often printed on large sheets of paper, rather than on small individual ones.
15:30If there isn't enough content to fill these sheets, there are blank pages left.
15:35Publishers often print the words notes or leave some other signs on them.
15:40This way, readers don't think it's a printing mistake.
15:43The rumble strips on the side of the road are supposed to wake up sleepy drivers who start
15:49to doze off behind the wheel.
15:50When your tires drift off onto these strips, the noise and vibration work like an alarm clock.
15:57It's a popular misconception that pumping a mascara wand back and forth allows more product
16:04to stay on it.
16:05In reality, doing this will only spoil your mascara.
16:08By moving the wand, you push air inside the tube.
16:12This not only produces flakes and clumps, but also makes the mascara dry out.
16:18A dime-sized hole in the elevator doors is a keyhole.
16:23If the doors get stuck, an operator can open them manually by inserting a special key in this hole.
16:29The same tool is used when an elevator needs routine maintenance.
16:34The bubbles in your soda push the straw up when they balance the buoyancy with the mass of the straw.
16:40But you can keep your straw from rising in your soda can by putting it through the hole in the
16:45metal pull ring.
16:46Ah, the science behind soda cans.
16:50Those squares of fabric that come with clothes are for you to try out your cleaning products on them first.
16:55This way, you won't ruin the entire item once you decide to wash it.
17:00The soft, round part under a soda bottle cap keeps the bubbles from escaping.
17:05Without it, your pop would go flat in no time, probably even before you buy it.
17:11And what's worse, if you bought the flat drink for your dad, then your pop's pop won't pop.
17:18The utility knife is supposed to last way longer than most people think.
17:23The knife blade is made of narrow, parallel sections.
17:26When the instrument gets blunt, break off the top section with the cap you can find at the bottom.
17:32Voila! You have a brand new sharp blade again.
17:35But don't forget to put on a pair of safety gloves and goggles before doing this.
17:40Yes, it's another sharp tip from Brightside.
17:45Have you ever wondered what these extra holes at the top of your running shoes are for?
17:50They're designed so that you can tie the shoes in multiple different ways.
17:54That's useful when you want to compensate for things such as a bad stride or even a damaged toe.
18:01Plus, you can change the look of your shoes the way you prefer.
18:06Many people use a dust jacket of their book as a bookmarker.
18:10No problem with that, it will save your book from bent page corners.
18:14But the primary purpose of a dust cover is to keep the book safe from distortions.
18:19For instance, if you spill juice or drop some of the food on your book while reading it.
18:25The Tic Tac dispenser has this little groove on its top, so you can dispense only one Tic Tac at
18:31a time.
18:32Even though, let's be honest here, nobody does that.
18:35Most of us just spill a whole bunch at once and then we wiggle all those extra Tic Tacs back
18:40in.
18:42Those rubber bumps you see between the tire treads are there for your safety.
18:47The raised edges tell you what the minimum height of your tread is.
18:50If the bump and the edges are even, it's time for you to visit the tire shop as soon as
18:56possible.
18:56But if the bumps are well beneath the level of the edges, you're good to go.
19:02What about that black grating on the microwave window?
19:06It's something called a Faraday shield.
19:08And it's there to prevent microwaves from getting away and turning the entire room into a Faraday cage.
19:14If the microwaves escape, your meal won't cook properly either.
19:18So yep, the cage is not there to make it difficult for you to see your meal while it's cooking.
19:23It's keeping the electromagnetic energy inside.
19:28How about a wrench compatible screwdriver?
19:31Cover your screwdriver with the end of your wrench and you can increase its torque.
19:35That's why the head of your screwdriver is designed the way it is.
19:39When you have odd angles, you can use this strategy.
19:43You've probably heard those myths, the blue side of the eraser can erase the pen.
19:48False.
19:49Its purpose is to erase a pencil.
19:51But in case you're writing something on heavier paper.
19:55The blue side can remove smudges you see after using the pink eraser too.
20:00Have you ever wondered why oranges in supermarkets mostly come in the red mesh bag?
20:06It's a trick to make this food look more orange and encourage you to make a purchase.
20:11An extra tip, don't throw away the mesh bag.
20:14Tie it up so you can have a small pot scrubber to clean your sink, kitchen, appliances and dishes.
20:22You can see golf balls don't have a perfectly round shape.
20:25Their surface is covered with many little dimples, something golf balls didn't always have.
20:31At one point, experienced golfers started noticing how through time,
20:36older balls with imperfections, such as nicks and bumps, could travel further.
20:40Such things create turbulence in the air around the golf ball, which eventually reduces drag.
20:48So, manufacturers started producing balls with dimples so they could go farther and faster.
20:55You might have noticed that sometimes there are ridges in toothpick tops.
20:59It's more hygienic because when you break that off, you can prop the toothpick up on it and it won't
21:04touch anything.
21:08Another safety feature you'll find, this time in your car, is a tab on your rearview mirror.
21:14With it, you can change the position of the mirror, so you don't get blinded if there's a car behind
21:18you with its high beams on.
21:21So, this little tab helps you control the glare of lights coming from behind.
21:25This feature showed up in the 1930s, but in the early 1970s, it became a part of standard equipment in
21:32most trucks and cars.
21:35Do you see that tiny hole on your iPhone, right next to the rear-facing camera?
21:39It's a microphone, and it's there so your phone can record sound as you turn your camera around.
21:47Some cables have a thick cylinder towards the end of the cord.
21:51It's called a ferrite core, or a choke.
21:54It's a magnetic iron oxide that stops high-frequency electromagnetic interference.
22:00For example, you know that annoying static noise you get if you bring your phone too close to a speaker?
22:06This interrupts your call, which is why cable cords with big cylinders are pretty useful, because they prevent these things.
22:15Do you know why nearly all luggage bags and backpacks have two zippers?
22:19It's way more convenient and easier to open in that way.
22:22But not just that.
22:24You can also lock these two zippers together to keep the stuff inside your bags safer.
22:30You know how toilets at public spots like malls have those big gaps at the bottom?
22:36It's primarily for better circulation of air.
22:39This type of door also makes it easier to clean the toilet or check if it's occupied if you're standing
22:44in line.
22:46Other than that, if you get stuck there and the lock gets broken, you still have a way to escape.
22:52You can just crawl out.
22:55Ever notice those plastic end caps on utility knives?
22:59And they also have scales on them, which indicates you may use them multiple times, but with sharp edges.
23:14If you've ever taken a moment to examine a regular grocery cart, especially their fold-out section, you probably noticed
23:21those metal loops jutting out.
23:24They're designed to protect the items you carry in your cart.
23:28You can use them to hang bags with soft items.
23:31You don't want to accidentally squish with heavier products, like bread, or easily breakable things, like eggs.
23:40Many coffee mugs come with curved notches on their bottom.
23:43When you're washing your mugs, put them against the rack at an angle in your dishwasher.
23:48This way, the water won't pool in there, so your favorite cup will be completely dry by the time you
23:53take it out of the dishwasher.
23:55If you're a McFlurry fan, you've probably noticed there's a square hole in the handle of the spoon.
24:02It's there so you can attach it to the special machine that mixes the ice cream and your favorite toppings
24:07together.
24:08The machine has a bar that slips into this square-shaped spoon and then thoroughly stirs it.
24:14And you get the spoon so they can minimize the mess during the process.
24:18Quite neat, wouldn't you say?
24:21A regular milk jug has a dent on one side.
24:25Some might see it as a random design decision, but a dent has several purposes.
24:31One of them is to get bigger if there's a gas buildup.
24:34This happens when your milk is spoiled.
24:37So you don't even have to try to check this out.
24:39Also, the dent is there so the jug doesn't burst if you accidentally drop it.
24:44The dent allows the expansion space that deals with the sudden pressure that happens when you drop the jug.
24:52Dental floss.
24:53Sure, it's important for your dental health and it's easy to assume what you do with it.
24:57But dental floss is great in the kitchen as well because it's a very precise cake slicer.
25:04Way better than a regular knife.
25:08Most kitchen shears have a serrated opening right there at the center where the blades and handles meet.
25:14It's something you can use to trim difficult herbs such as rosemary, thyme, or chives.
25:20Because of this opening, you don't need to pick the leaves off by hand.
25:23But de-stem them in one motion.
25:27The majority of gelatin containers or single-serving yogurts come with a tinfoil lid.
25:33And in most cases, you can use this covering as a disposable spoon.
25:38Just peel away the covering and after a couple of simple folds, you'll have a perfect little spoon for your
25:43midday snack.
25:46You're trying on a pair of jeans, a dress, or a jacket, and are about to dig your hand into
25:51the pocket when you realize there's no depth to it.
25:55The pocket is simply not there.
25:57But why would anyone create pockets you can't put anything in?
26:01And now would be a good time to pick your iPhone up from off the floor.
26:05Well, the reason for fake pockets is simple.
26:08If a clothing item has a specific cut or shape, pockets may spoil it.
26:13They can alter the item's shape, either in the warehouse or already on the retail rack.
26:18The solution? Getting rid of pockets in key areas.
26:22Plus, fake pockets are obviously cheaper, and they don't get stretched out.
26:27Interestingly, this practice goes back to the 17th century.
26:31That's when pockets were actually removable.
26:33They resembled small bags, and women, for example, could move them from one outfit to another.
26:39Unfortunately, it was also very convenient for pickpockets.
26:43They could grab such a pocket and run off with it.
26:46Then clothes became more streamlined, and slim pockets started to be sewn right into them instead of attachable bags.
26:54This was believed to make the shape of a person's silhouette more alluring.
26:58But soon, slimmer skirts came into fashion, and pockets went out of it.
27:03And people started using handbags instead.
27:06These days, most pockets are real.
27:09But some of them are still fake.
27:11So, how can we make sure that we don't actually turn a fake pocket into a hole, thinking it's a
27:17real one?
27:17Well, first of all, take a look at the stitching along the edge of the pocket, where it's supposed to
27:22open up.
27:23If you see a single loose thread, just snip a piece of it and start pulling gently.
27:28If the pocket is real, the thread will easily come out.
27:32But if you feel that the stitching won't budge, most likely, you have a faux pocket on your hands.
27:38If this is the case, just leave it be.
27:42Now, let's move on to some other everyday objects that may be hiding some secrets.
27:47For example, those lines on some kinds of chips.
27:50For one thing, they help with the distribution of spices and seasonings.
27:54In other words, all those substances that make your chips taste like cheese are mostly stored inside the lines.
28:01Plus, the lines make chips crunchier.
28:05Highlighters are filled with a special semi-transparent fluorescent ink that can glow in dim light.
28:11Yellow and light-green hues are the most popular because they don't prevent you from seeing the text after black
28:17-and-white photocopying.
28:19Photocopiers perceive yellow and light-green marks as almost non-existent and don't print them.
28:25Now, back in the day, the first jeans had one problem.
28:29Workers and miners, who were the original jeans wearers, put too much pressure on the poor piece of clothing.
28:35As a result, the seams couldn't withstand the stress and tore.
28:39So, tiny metal studs were invented to prevent this from happening.
28:44Most metallic zippers have a hidden lock inside them.
28:47That's why you shouldn't leave the zipper handle in an upward position.
28:51When you pull it downwards, it automatically locks.
28:54It's all thanks to several tiny grooves hidden underneath the handle.
28:59Now, about those horizontal lines on plastic bottles.
29:02They help hold bottles up.
29:04Some bottles are produced from soft plastic.
29:07Without the lines, they wouldn't keep their shape.
29:10Instead, they would twist easily or even break.
29:13Bath foam isn't only for fun or a nice smell.
29:16It helps regulate the temperature, too.
29:18The bubbles keep the water hot.
29:21And you can enjoy your bath a bit longer.
29:23With or without your rubber ducky.
29:26Ever notice that layer of clear liquid in gel pens?
29:30It's called the ink follower or stopper fluid.
29:33The gel in such pens contains pigment particles dissolved in a polymer solution.
29:38The gel should be thick enough to keep the pigment particles suspended,
29:42but also thin enough to flow first onto the ball and then the paper.
29:47The main task of the stopper fluid is to be a barrier to prevent the gel from evaporating or leaking
29:53out.
29:53Without this transparent fluid, your gel pen wouldn't function.
29:57The fluid always stays in one position and doesn't get dissolved with the gel.
30:02Neither does it move backward or flow out of the pen.
30:06The holes in the bottoms of your earphones allow air to circulate up and through the speakers.
30:11It allows to increase low frequencies, making the bass sound deeper.
30:16The quality of the sound also becomes much better.
30:19Some plastic milk containers have dents on their sides.
30:22Try as they might, they just cannot park without some damage.
30:27Nah, I made that up.
30:28These dents serve several purposes.
30:30For one thing, when milk spoils, this process usually causes swelling and high-pressure buildup inside the container.
30:38Oh boy.
30:38That's when the dent comes in handy.
30:40It pops out and doesn't let the jug blow up.
30:43Plus, if you ever decide to freeze the milk, it will expand like any other liquid.
30:48And then again, the indentation will pop out and prevent the container from breaking inside your freezer.
30:55That's a good thing.
30:57Airplane windows have rounded edges, and that's a crucial safety measure.
31:01It prevents aircraft accidents.
31:03Weak spots are usually situated in the corners.
31:06If airplane windows were square or rectangular, each of them would have four potential weak spots.
31:12Under pressure, they would collapse.
31:15If you look closely at a tram's overhead lines, you'll see that its contact wires zigzag back and forth instead
31:22of going in a straight line.
31:24The thing is that all trams have pantographs attached to their roofs.
31:28The upper part of the pantograph is gradually worn down by the overhead wire and eventually needs to be replaced.
31:35To wear it down evenly, the wire is not installed strictly along the tram's path, but in zigzag patterns.
31:42As the tram moves, the pantograph slides along the wire and it wears down evenly.
31:48You might have wondered why some gas cans have two holes with caps, one bigger and one smaller.
31:55Before, I thought that the little hole was used when you poured something into a smaller container.
31:59But I was wrong.
32:01A very infrequent occasion.
32:03In reality, you're supposed to uncap it before you pour the gas inside the bigger hole
32:08to prevent it from glugging and spilling on your clothes and on the ground.
32:13Most of the buttonholes on a shirt are vertical, but the top and sometimes bottom ones are horizontal.
32:20The reason is simple.
32:21These two buttons slip out more often than others.
32:24Luckily, producers have found the solution that can prevent these buttons from slipping out.
32:29Horizontal buttonholes.
32:31What engineering!
32:32Buttons tend to slip out less from such buttonholes.
32:36Stick sachets of sugar or salt are easier to open than many people think.
32:40There's no need to tear off one of the ends.
32:43The right way is actually to tear them down the middle.
32:47Some boots have loops sticking out on the back.
32:50Their main purpose is to help you pull your shoes on easier.
32:53Just tug on the loop while you're pushing your heel into the boot.
32:57You can also use these loops to hang your boots on a hook when they're dirty or when you want
33:02to dry them after washing.
33:03Or you can run your laces through the loop if you want to tie them around your ankle.
33:08When you're on board the plane, you might spot a little triangle over your seat.
33:13Such triangles show the flight crew the best spots to check the plane's flaps through the window, just in case
33:19they're flapping.
33:20If your shoes are really slippery, just take a bit of sandpaper and rub it on the soles for better
33:26traction.
33:27They'll become more grippy, and you'll be able to wear them out in the rain.
33:31Now, if they get too wet, they might turn griping, but that's only if you have talking shoes.
33:37If you drill several holes at the bottom of your garbage can, putting in and taking out trash bags will
33:43become much easier.
33:45You won't have any problems with suction.
33:48You can usually find some silica gel in bags, shoes, and many other things you buy.
33:53This shell absorbs excess moisture.
33:55Don't throw it away.
33:57Each time your shoes get wet, put a few packets of silica gel inside.
34:02The thermos wasn't actually invented to keep your coffee warm.
34:06It was made by a Scottish scientist who just wanted a safe place to put his chemicals at a stable
34:12temperature.
34:12So, he took two bottles, put the smaller one inside the bigger one, and vacuumed out the air between them.
34:19Well, anyway, thanks for the hot coffee!
Comments