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Discover what 6q means and why it matters to you. Learn the key facts about 6q in a clear, straightforward way. This brief guide breaks down the concept so anyone can understand it. Start here to gain quick, essential insight into 6q.
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00:00Leaving your valuables or a chocolate bar in a car is a no-brainer.
00:04But there are other things people often overlook.
00:08Here's what to watch out for before leaving your car.
00:11Number 1 is aerosol cans.
00:14Hairspray, deodorant, spray paint, household cleaner and that sort.
00:18On the back of these cans, you might notice a storage temperature recommendation.
00:22Well, stick to that.
00:24Here's what can happen.
00:26Since these cans are pressurized, they become more sensitive to temperature.
00:31What's inside the aerosol may expand and this may result in a crack and then the can can blow up.
00:37Temperatures above 100 degrees Fahrenheit are already alarming and it can easily get as hot as that in your car
00:44on a warm summer day.
00:46Researchers from the USA have figured out how long it takes a car to turn into a sweat factory on
00:52a hot day.
00:56Within 1 hour, the insides of the car parked in the sun reaches 95 degrees Fahrenheit or hotter, with an
01:03average temperature of 116 degrees Fahrenheit.
01:07So, if you want your car in one piece and running, take aerosol cans with you.
01:14The second item is sunscreen.
01:18Sunscreen is vital for your skin since it decreases the risk of skin complications and prevents skin aging caused by
01:24the sun.
01:26This includes wrinkles, sagging and age spots.
01:30But when you leave sunscreen in your car, it gets exposed to high temperatures and it can ultimately shorten its
01:36shelf life.
01:36If you end up finding spoiled sunscreen, you might notice a funny smell when you open the cap.
01:42Plus, the heat might cause the cap to open and the sticky substance will get all over the car.
01:48The same rule applies to lipsticks and other cosmetics as well.
01:53The next one is plastic bottles.
01:57There are two reasons why you shouldn't leave them inside your car.
02:00Firstly, a plastic water bottle can act as a lens, magnifying the sun's rays and starting a fire.
02:08A fire department in Oklahoma conducted an experiment and confirmed that the danger of fire was real.
02:15David Richardson from that department says it can happen if the beam of light is focused enough.
02:21The second reason is related to your health.
02:23Many plastic bottles contained by sphenol, a potentially toxic compound.
02:28The BPA levels can increase at high temperatures and that can be harmful to your body.
02:34There's a chance that this chemical can get into your drink after you leave the bottle inside the vehicle.
02:41Oh, and batteries.
02:42They could lose their capacity to work at full power when they're left abandoned in the car.
02:47You can buy a new pair and fix this problem, but it won't be as easy to solve the problem
02:52of leakage or a rupture.
02:54It can be bad for your health because battery acid is dangerous when inhaled and highly corrosive.
03:01The reason for leakage is again related to high temperatures.
03:05Battery manufacturers recommend keeping their products at room temperature.
03:11This fact is partially related to batteries.
03:13It's about electronics.
03:15Have you ever realized how hot your phone can get when it's exposed to the sun?
03:20You're driving and, let's say, looking at the GPS on your phone.
03:24Even in this situation, your phone can heat up.
03:27What will happen to it after hours of sun exposure?
03:31Phone companies are strongly against customers leaving their devices in vehicles
03:35because they might shut down, get damaged, or, you know, boom!
03:41Personal belongings are another priority on the list.
03:44A wallet or a handbag may come to one's mind first.
03:48Yet, a passport or even some change you leave near the passenger seat is sometimes enough to attract a thief.
03:55Better to keep such stuff out of sight, for example, by storing it in the trunk instead of leaving it
04:01in the back seat.
04:04Number 7 is also related to theft.
04:06Life can be too hectic sometimes.
04:09And it's understandable if you can't clean your car frequently.
04:12But leaving garbage in the car is another mistake.
04:15Thieves tend to search for messy-looking cars.
04:18They think that the owner doesn't use such a vehicle frequently.
04:23How about plants?
04:26I know it isn't that common to keep plants in the car on a daily basis, but sometimes you need
04:32to move them.
04:32The heat inside the vehicle can easily dehydrate the poor thing.
04:38Medications are another thing you shouldn't keep in the car for too long.
04:42The constantly changing temperatures inside the vehicle can decrease the effectiveness of your pills.
04:48Authorities recommend keeping most medications at 59 to 77 degrees Fahrenheit in a cool and dry place.
04:57Important documents that contain your personal data shouldn't be left in the vehicle either.
05:02Some examples of such documents are tax forms, financial statements, and school transcripts.
05:08A thief could commit fraud or identity theft using this valuable information.
05:14And there's also food and drinks.
05:17Experts recommend not leaving groceries or leftovers in a warm car for more than two hours,
05:22or only an hour when it's over 90 degrees Fahrenheit.
05:26The same rule applies in the winter too.
05:29Canned foods, for example, have a high risk of going bad if a can of sweet peas, let's say, gets
05:36frozen in the car.
05:37The effect will be similar to what would happen to soda.
05:40Let it thaw in the refrigerator instead of leaving it at room temperature.
05:44If the product doesn't look or smell normal, throw it away in a place where not even an animal can
05:50find it.
05:51Don't try to taste it, just trust your senses.
05:54If the item seems rusted or there are some cracks in the can, it should end up in the trash
05:59too.
06:00Eggs are another example.
06:02Normally, eggs shouldn't be frozen.
06:05But let's suppose you forgot one grocery bag in the trunk of the car,
06:08and the weather was so cold at night that the eggs got frozen.
06:11Keep the eggs in the refrigerator before use.
06:14They should be hard cooked.
06:16It's your only option.
06:17You see, freezing causes the yolk to become thick and syrup-like.
06:21It loses that natural flow and doesn't mix well with other ingredients.
06:28You shouldn't leave your pets alone in the car, obviously.
06:31And not just because of a potential rise in temperature.
06:34They will feel uncomfortable without you, their best friend accompanying them.
06:39In their frustration, they might do something to get noticed,
06:42which can be, for example, ruining the interior of the vehicle.
06:48Now let's return to the winter season again.
06:50If possible, keep the gas tank of your car over half full.
06:54This can prevent the fuel lines from freezing.
06:56It also makes it easier to start the engine and hit the road in the morning.
07:00While keeping an eye on the fuel bar, it might be a good idea to glance at the tire pressure
07:05too.
07:06The cold can result in tire pressure drops.
07:11Not only high, but also low temperatures can damage some items.
07:15A good example is paint cans.
07:17They should be quickly taken out of the vehicle in the winter.
07:21The ingredients in the paint can experience expansion, separation, and clumping due to the cold.
07:27In other words, you won't be able to use this paint anymore.
07:32Weather also affects wooden musical instruments like violins or guitars.
07:37Changes in temperature and humidity can cause wooden instruments to warp, crack, or split.
07:44Glasses get affected by fluctuating temperatures too.
07:48In a hot car, plastic frames can bend.
07:50Or plastic can become brittle when it's very cold.
07:54This makes glasses prone to breaking.
07:57Don't leave house keys and garage door openers inside the car.
08:01This is an everyday practice for many people, but it's risky.
08:04They can get into the wrong hands.
08:08To listen to music, most people connect their phones to the car or listen to the radio.
08:13CDs are getting less and less used these days, but don't leave them in the car anyway.
08:18They might get warped, and you won't be able to use them anymore.
08:22Can you think of any other items you shouldn't leave in the car?
08:27Okay, today I'll show you things you've never seen and tell you stuff you never knew.
08:32Wow, all in one video!
08:34What a bargain!
08:35For example, these soda found stations in fast food restaurants.
08:39We all see the nice side of it, but have you ever wondered where all this soda comes from?
08:44Let me take you behind the scenes.
08:47Ta-da!
08:47Turns out it's a pile of boxes with tubes.
08:50So, when the drink runs out, the employees change the box and plug the tube back in.
08:56Okay, let's peek into a couple more places where we normally don't belong.
09:01This is, for example, what you will see if you cut the screen of a Mac open.
09:06And here's what's hidden behind the dryers in a public laundromat.
09:09Today, 4 out of 5 households in the U.S. have a dryer.
09:13But they weren't so widely accessible when they first appeared in the 1950s,
09:18because they were way too expensive for the average homeowner.
09:21Now, grocery shopping isn't an uncommon practice,
09:24and we all have walked past dairy fridges a million times.
09:28But have you ever wondered what's behind them?
09:30Turns out they're just shelves, and store employees stack the products from the other side.
09:35It makes perfect sense, but I never imagined it like this.
09:39Now, this photo shows what's behind the elevator button.
09:43Obviously, a bunch of cords.
09:45The buttons are all wired to a computer that manages the elevator.
09:49How does the computer know where the elevator is at a particular time?
09:53Well, there are several possible systems.
09:55But the most common one is a long vertical tape in the shaft with a series of holes.
10:00A sensor counts the number of holes that are passed, and that's how the location is determined.
10:07Okay, there are a couple of common things we all know,
10:10but the purpose of which remains a mystery to most.
10:13So, let me share these secrets with you.
10:16Those metal rivets on jeans have been there from the very beginning.
10:20Jacob Davis, the iconic man who made the first pair of jeans,
10:24added copper rivets to places where pants are most likely to rip.
10:28Today, they have more of a decorative and distinctive purpose,
10:31since they are a traditional attribute of the jeans everyone knows of.
10:36Now, I'll bet you know there are extra loops on some shoes.
10:40No, they're not for sweat or ventilation.
10:42Those are extra loops for laces, just like other loops you use.
10:46But they're there to tie your shoe around the ankle to prevent your foot from moving aside.
10:52That's especially helpful if you're hiking and ascending and descending hills and trails.
10:56Now, have you ever noticed those half-belt thingies many coats and jackets have at the back?
11:02Turns out, they first appeared on oversized military jackets,
11:06so the extra fabric could be collected on the back,
11:09and the person doesn't stumble when working.
11:12Today, those belts are only added for the sake of style and tradition.
11:16Most clothing items you buy come with a small bag of fabric or a button, or both.
11:21These are actually not useless.
11:24Buttons obviously can be replaced if you lost the original one.
11:27Pieces of fabric can serve two purposes.
11:30You can patch up the hole, but the main purpose is to provide you with a sample of cloth,
11:35so you can use it to test different washing products on it and see what happens to the fabric.
11:41Now, pom-poms on woolen hats.
11:43Did you know that sailors were wearing hats with pom-poms in the 18th century
11:48to protect their heads in case they accidentally whacked them?
11:52Regular people were wearing them in Scotland,
11:54and the color of the pom-pom signified the person's social status.
11:58People got back to wearing hats with those cute decorative items during the Great Depression.
12:03They're made of spare yarn, so it was a cheap way to decorate your hat.
12:07Now, if you haven't noticed, some sidewalks have little plates with bumps on them.
12:12Most people don't pay much attention to them, but they're very important for visually impaired people.
12:18It signals a slope that then leads to a crosswalk.
12:21Also, several patterns signal different things.
12:24Have you noticed that the icon of a gas tank on car dashboards has a little arrow next to it?
12:31Well, the arrow has a purpose.
12:32It points at the side of the car where the gas tank is located.
12:36Very useful for forgetful people, like me, who constantly wonder which side it is on,
12:42and also for those who drive rentals once in a while.
12:45The answer is right in front of your eyes.
12:48If you can't find the arrow on your panel, then the fuel hose on the icon indicates the side instead.
12:54Now, on the back of many makeup and hygiene products, you'll find this symbol with a marking like 6M, 12M,
13:01and 24M.
13:03This is the number of months this product can serve you before you should toss it out.
13:08You might know that whistles work perfectly fine even if they don't have that ball inside.
13:13And yet, they have it.
13:15But why?
13:15Even though there's a sound without the ball, the noise it creates is very flat, and it's not distinguishable enough.
13:23When the whistle has a ball inside, then it starts moving with every blow,
13:27indicating different pitches and making the noise more noticeable.
13:32Lollipop sticks have those squared holes on the end of their sticks for a reason, too.
13:36When the candy is put on the stick, some of it goes into the hole, fixating the candy part.
13:42This way, the candy ball or whatever shape is less likely to fall off the stick.
13:48Yeah, it's a bummer when that happens.
13:50Measuring tapes have that little metal stud on the end.
13:53Most people know that you can use it to stick it to the side of the surface you're measuring.
13:58But it's not the only cool thing about it.
14:00Look, there's also a small slot.
14:03And this slot can be used to hang it on a nail.
14:06Again, to free your hands and keep measuring.
14:08The bottom of the end of the tape has a ridged edge.
14:12It'll help you make a mark if you don't have a marking tool with you.
14:15Have you ever wondered why the taped blade is curved?
14:19Well, it helps to keep it rigid when extended.
14:22Pay a closer look at the blade.
14:24Apart from numbers and markings, there are also black diamonds.
14:28Those are there every 12.2 inches,
14:31and they're useful for construction workers to space engineering joists.
14:36They can also be useful for you if you want to hang something heavy, for example.
14:40The diamond will mark the exact center of a stud, which is placed 16 inches apart from one another.
14:47And you can drill something to that center to make sure whatever you hang is safely attached.
14:53Now, most coins have ridges.
14:55And this is the legacy of the olden days.
14:58You see, back in the day, all coins were linked to a silver standard.
15:02The amount of silver used in the coin was proportionate to the value of the coin.
15:06So, the more actual silver was used to make the coin, the higher its value was.
15:12Hi-ho silver!
15:13Do you remember the Lone Ranger?
15:15Silver was the name of his horse.
15:17Eh, never mind.
15:18Anyway, all the coins had precious metal in them,
15:21and some people started shaving off a little bit of silver from it.
15:26It wasn't noticeable on one, but if done on several, people could get quite a bit of that precious metal.
15:32So, to prevent fraud, the edges were made with ridges for security reasons.
15:37So, if someone attempted to shave it off, the ridges would disappear, and no one would accept that coin anymore.
15:44Smart!
15:45Today, no one makes coins out of silver.
15:47The coins just represent the value.
15:49But the ridges are kind of a cultural heritage now.
15:52And finally, a typical plastic milk jug often has inverted circles on one or more of the sides.
15:59Not like alien crop circles, this dimple is there to make the jug more resistant
16:04and to prevent it from erupting in case the jug falls on the floor.
16:08The dimple gives some more space for the liquid to expand.
16:12Also, as the expiration date approaches, the microbes in the milk start to expel some gases.
16:18As there are more of them trapped inside, the pressure in the jug is rising.
16:22The dimple takes care of the expansion and prevents the jug from exploding.
16:26And the cows are utterly delighted that their hard work is not wasted.
16:35Some pieces of clothing come with a small patch of fabric with a button on it.
16:40While it's quite obvious how to use the button, the fabric's purpose isn't so apparent.
16:45It's not there to patch holes.
16:47You're supposed to test your cleaning products on it.
16:49Then, if something goes wrong, you won't ruin the whole garment.
16:53The seemingly random dime-sized hole in the elevator door is actually a keyhole.
16:58If the elevator doors get stuck, an operator can open them manually by inserting a special key in this hole.
17:05The same tool is used when an elevator needs routine maintenance.
17:09Some plastic milk containers have dents in their sides that serve several purposes.
17:14For one, if milk spoils, this process can cause swelling and high-pressure buildup inside the container.
17:20That's when the dent comes in handy.
17:22It pops out and doesn't let the jug blow up.
17:25Plus, if you decide to freeze the milk, it'll expand like any other liquid.
17:30And then again, the indentation will pop out and prevent the container from bursting inside the freezer.
17:36A first-timer might think that Chinese takeaway boxes have a peculiar shape.
17:40The more experienced diners know that by unfolding the sides of these containers,
17:45you get a paper plate with the food already sitting on top.
17:49The lines on plastic solo cups can help you measure out liquids and non-liquids too.
17:54From the bottom up, those lines coincide with the measurements of 1, 5, and 12 ounces.
18:00The lowermost line is the perfect portion of mouthwash.
18:03The middle one is a serving of cereal for breakfast.
18:06And the topmost is the amount of water recommended to drink 4 to 5 times a day.
18:12Striped toothpaste will always come out in stripes even if you mash the tube with all your strength.
18:18No magic involved though.
18:19The product is very dense and viscous, so it doesn't mix well.
18:23The white, blue, and red parts of the toothpaste are pushed down at an even rate,
18:28thanks to their similar physical properties.
18:31And viscosity helps the stuff be pushed down and out from the edges first,
18:35so no matter how hard you try, there will always be those perfect stripes.
18:40Not every iPhone owner pays attention to an almost unnoticeable little hole between the camera and the flash.
18:47It's the gadget's second microphone.
18:49Its role is to block outside noises when you're filming a video.
18:53This microphone also makes the sound clearer.
18:56Use it when you're on the phone in a noisy place.
18:59Dental floss can slip out from your fingers and tangle.
19:02To avoid such problems, tear off a piece and floss and tie its two ends together.
19:07It will be much easier to use and won't hurt your hands.
19:11Most frying pans have holes in their handles.
19:14You can use it to hang the thing on a hook on the wall, but that's not its original purpose.
19:18When you're cooking something in the pan, the hole in the handle is there to hold your messy spoon.
19:23It's especially important for plastic utensils because you can't leave them in the pan for long since they can melt.
19:30Some toothpicks have several grooves on the blunt end.
19:34When you need to use one, break off the grooved end and put it on the table.
19:38It'll serve as a rest to keep your toothpick from touching the surface.
19:42You've probably noticed that most soft-rink lids have ridges and three bumps on them.
19:47With their help, the lid can turn into a coaster once you put it on the table and place the
19:51cup on top of it.
19:53No more spillage!
19:55Bath foam isn't only for fun or a nice smell.
19:58It also helps regulate the temperature.
20:01The bubbles keep the water hot so you can enjoy a bath a bit longer.
20:05Anyway, it works for acrylic bathtubs only.
20:08Those made of metal lose heat really fast either way.
20:12Almost all measuring tapes have a metal tip with a small slot on the end.
20:16You can use this slot to hang the tape on a nail or a screw to make measurements without anyone's
20:21help.
20:22Sometimes this tip has a row of sharp points along the edge on one side.
20:26That comes in handy when you want to leave a mark without using a pencil.
20:31A pack of cotton pads has those strings on it so we could hang it on some hook or holder.
20:37And no, there's no need to untighten and tighten the pack again.
20:41Look at the bottom of the pack.
20:42It has a perforated line.
20:44Tear along that and now you're good to pull out a cotton pad.
20:48A triple handle on a jerry can is there to make it easier for two people to carry it and
20:53distribute the fuel evenly.
20:55Gas cans often have a second hole that actually needs to be uncapped too before you pour the gas.
21:00The air passage will prevent it from pouring out.
21:04Lemons get juicier if you warm them up a little bit in the microwave.
21:07The heat softens the frozen membranes so the juice can flow out freely.
21:12More lemonade for you!
21:13When you buy some grated cheese, get ready for a surprise.
21:17If the package says it contains cellulose, it means that the cheese does contain wood pulp.
21:23Don't worry, it's digestible.
21:25It's added to prevent the product from clumping.
21:29The expiration date on mineral water isn't about water going bad.
21:33Actually, no water can spoil, but the bottle can.
21:37Over time, it starts leaking some chemicals that aren't quite safe.
21:41The spike in the cap of a tube of ointment or cream is there so you can puncture the tiny
21:46foil seal.
21:47No need to grab a toothpick or try to use your fingernails to peel it off.
21:51Post-it notes are supposed to be peeled off from the side like you're turning the page in a book.
21:56Most of us tear them from the bottom, and that just creates a crease and makes the whole note less
22:01sticky.
22:03To prevent water from boiling over, just lay a wooden spoon across the rim of the pot.
22:08It only works for a little while, though.
22:10If the spoon's surface gets heated up to the boiling point, the bubbles will just foam up and around it.
22:15That's why metal spoons won't do.
22:17They heat up too quickly.
22:19Some erasers have two colors and textures.
22:22Not for pen ink versus pencil lead, but for different types of paper.
22:27You're supposed to use the blue side to remove pencil marks from heavy grades of paper.
22:32Most people use bobby pins upside down.
22:35The zigzagged part goes closer to your scalp.
22:38The texture keeps the hair and pin in place much better.
22:41And give your pins a spritz of hairspray before putting them in.
22:45They'll grip better.
22:46Ever notice the tiny second hole in the lid of your coffee travel mug or to-go cup?
22:51It's there to control how smoothly the liquid flows out from the drink hole.
22:55Without it, the hot stuff would just glug out at you like milk from a jug.
22:59It also lets the steam escape so the high temperature and built-up pressure don't melt the lid or send
23:04it shooting off.
23:07Apples you buy at the supermarket were likely picked between August and November.
23:11After that, they were covered in wax, hot air dried, and stored in cool places.
23:17It takes the fruit 6 to 12 months to make it to fresh produce shelves.
23:22Sometimes, you need to get away from your computer but don't want to keep logging back in.
23:26Put your mouse over the top of an analog watch.
23:29The mouse will perceive the ticking second-hands movement, and this will prevent your computer screen from turning black.
23:37When using a blender, pour the liquids in it first.
23:40Only after adding your milk, coconut water, or yogurt, put the berries, fruit, or spinach inside.
23:47Thanks to the holes in the bottoms of earphones, air can circulate up and down through the speakers.
23:52It results in increased low frequencies.
23:54This makes the bass sound deeper and improves the overall sound quality.
23:59You can use metal loops on the sides of a grocery cart to organize the space in your cart better.
24:04Hang your jacket on such a loop or put a bag of delicate items there, like eggs or bread.
24:10This way your jacket won't get wrinkled and eggs won't get squished.
24:15The black lines on a basketball make the game easier to play.
24:19They're actually grooves, helping you handle the ball.
24:22And since the players need to move around the court while dribbling or bouncing the ball, control is crucial.
24:29The black lines allow you to grip the ball better.
24:32You can also easily steer it in any direction once it's in your hand.
24:37If the basketball was smooth, you wouldn't be able to do it.
24:40By the way, pebbled dots that cover the outside of the ball serve the same purpose.
24:45The drawer at the bottom of your stove is there to keep your dishes warm when you cook large amounts
24:50of food.
24:51When one dish is in the oven, the already prepared ones are kept warm in the drawer below.
24:57Did you know that you can actually inflate a balloon without using your lungs?
25:02All you need is a plastic bottle, vinegar, baking soda, a funnel, a rubber band, and a balloon, of course.
25:11First, pull some baking soda into the balloon using your funnel.
25:15And now, pour the vinegar into the bottle.
25:19You don't need a lot.
25:20Just fill about a third of the bottle.
25:23Let's go ahead and put the balloon over the bottle.
25:26But don't tip the soda inside the vinegar yet.
25:30Secure the balloon with a rubber band and tip it over to make the soda fall into the vinegar.
25:35And now you can step back and enjoy the show.
25:37When the baking soda and the vinegar are mixed together, they release CO2 that will inflate the balloon.
25:45You can use the inflated balloon to show your friends another trick.
25:49Grab a comb and rub it on the surface of the balloon.
25:53Now you can bend the water flow in your sink with static electricity using your brand new electrified comb.
26:00Just don't try brushing your hair.
26:03Can you really pierce a balloon without popping it?
26:06The answer is yes.
26:08You're going to need a skewer or a long needle, a balloon, petroleum jelly, and some courage.
26:15Scratch the balloon with your fingers and make it more flexible.
26:18Now, blow steadily into the balloon.
26:21Stop before blowing it to the full size.
26:24This will make the trick easier to perform.
26:26Put some petroleum jelly on the needle.
26:29Now, find this darker area near the knot where the balloon is less stretched.
26:34And just pierce it all the way through the top, like this.
26:38Balloons are made up of polymer chains.
26:40They're so tiny that they seem invisible to the human eye.
26:44This trick works because the polymer chains are less stretched on the neck of the balloon.
26:49It was enough room to allow the needle in between the chains without breaking them.
26:54But if you try the same technique on the sides of the balloon, it will definitely pop.
27:00By the way, hairspray actually helps keep the air in the balloon longer by sealing the surface.
27:06But if you apply hairspray on the outside of the balloon and then touch it when it's not yet dry,
27:11the balloon will shrivel.
27:13Isn't it magic?
27:17Beware, our next trick can make you question gravity.
27:20Pour some plain water into a glass bottle.
27:24Not much, about a quarter.
27:26Put the bottle in the microwave for a minute.
27:29Meanwhile, prepare a bowl with colored water to make the trick more visual.
27:33Take the bottle out of the microwave, turn it upside down and pour it into the colored water.
27:39The bottle will soon begin to fill with water.
27:42Can you guess why?
27:44The air expands when it's heated.
27:46The bottle and the air began to cool down and the air contracted, which caused the water to move.
27:54Not only wizards can make things disappear.
27:57Fill a plastic container or transparent glass with sunflower oil.
28:02Dip a glass rod inside the oil.
28:05Can you see it now?
28:07Oil and glass bend light the same way because they have almost equal refractive indexes.
28:13Therefore, it's impossible to see how the wand bends light inside the oil.
28:18To make this trick even more epic, pour equal parts of water and oil inside a glass and dip the
28:25glass rod inside it.
28:27You'll see it in the water, but it will disappear inside the oil.
28:33Have you seen this epic instant freezing trick?
28:36Here's how you can repeat it at home.
28:38Grab a small plastic bottle of clean drinking water.
28:42Leave it for about 4 hours to bring it to room temperature.
28:46And now, put it into a freezer and wait for an hour and a half.
28:50After that, take it out very carefully.
28:53Try not to shake it at all.
28:55Now, hit the bottle strongly or shake it and see what happens.
29:00Not only is red cabbage rich in fiber and vitamins, but it's also pretty useful for homemade scientific experiments.
29:09Boil red cabbage in pure water and wait until the water gets colored.
29:14Red cabbage contains a chemical called anthocyanin.
29:18It changes color when it's mixed with an acid or a base.
29:21That's why if you mix your cabbage with water with different ingredients, you'll get different colors.
29:27Bases like soda will make it blue, but acids on the contrary will create reddish colors.
29:33You can prove it by adding some lemon juice to your cabbage water.
29:37The water will become pinkish.
29:40And if you add vinegar, you'll get an even more vibrant pink color.
29:45If you have a juicer, you can try the same experiment with red cabbage juice.
29:50Initially, it will have a more vivid purple color.
29:53But under the influence of additional liquids, the color will change.
29:58Can you guess which color you'll end up with if you mix cabbage juice with bleach?
30:03It's almost transparent, but still has a greenish-yellow tinge.
30:09The next trick is very trendy among artists.
30:12Here's what you're going to need.
30:13Liquid soap, cotton buds, milk, and acrylic paints.
30:17You can use food coloring for this tip.
30:20Pour a little bit of milk into a wide bowl or a plate.
30:24You don't need a lot.
30:25Then put a few drops of paint into the milk.
30:28And now dip a cotton bud covered with soap.
30:32The patterns will begin to change.
30:34That's because the fatty molecules in the milk get attracted to the molecules of soap.
30:39When you're satisfied with the pattern, you can put a sheet of paper on top of the milk.
30:44And voila, your abstract masterpiece is ready.
30:48In fact, this technique is related to an ancient paper marbling called ebry.
30:53Artists created colorful patterns by sprinkling and brushing color pigments on a pan of oily water
31:00and then transformed those patterns on paper.
31:04Friction helps people walk on the road instead of sliding on it.
31:08And it also allows us to perform this cool experiment called floating rice.
31:14Fill a small plastic bottle with rice.
31:17You can use a funnel to make the task easier.
31:20Shake the rice for a while.
31:21And now try to push a chopstick or a pencil inside the bottle.
31:25If you did everything right, the stick will get stuck in the rice.
31:30You can also try using different types of grains and see what happens.
31:35Have you ever tried to put an ice cube into oil?
31:38Well, you can try today.
31:40It will create these cute little drops that will fall into the bottom of the glass
31:44because they're heavier than oil.
31:48Here's an easy way to stick an ice cube to a string without any glue.
31:53Place an ice cube in water.
31:55Put a piece of string on top and sprinkle it with salt.
31:59You don't need much, otherwise the ice will dissolve.
32:02A pinch is enough.
32:04Wait for one minute and then gently pull the string.
32:07And there you go.
32:08The ice has stuck to the string.
32:12For this experiment, you're going to need an empty, clean soda can.
32:17Turn on the kettle and wait until it begins to boil.
32:20Carefully hold the can over the kettle using kitchen tongs.
32:24It will help fill it with hot steam.
32:27When the can is full of steam, give it an ice bath.
32:30You can put it into a bowl with cold water and ice cubes.
32:34The can should wrinkle up right away.
32:37That's because the volume inside the can decreases,
32:40reducing its pressure and allowing the external pressure to crush the can.
32:45The next trick is also about air pressure.
32:48You're going to need a glass bottle, a small piece of paper, a lighter, and a peeled, boiled egg.
32:55The diameter of the bottleneck should be less than the width of the egg.
32:59And it's important to use glass because plastic can melt.
33:04Now carefully light the paper.
33:06Let it burn a little bit and drop it inside the bottle.
33:10Put the egg on the neck of the bottle.
33:12It should begin to bounce.
33:13And soon the pressure of air will push the egg into the bottle.
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