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Boiling Water Without Heat | Earth Science

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Using an air vacuum, a conical flask of water is boiled but mysteriously remains at room temperature.
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The world's most incredible facts compete as Explosive Experiments, Amazing Animated Tales, and Strange Stunts. In each show hosts Dom Byrne (Mr Curious), Fran Scott (Bold Experimentalist) and Greg Foot (Daredevil Scientist) get three chances to win. They can award each other's stories points for packing in maximum facts and maximum fun.
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Опубликовано:

5 сен 2024

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Комментарии : 293

@SteelSkin667 8 лет назад

That has to be the most British science experiment ever.

@DurgaswaroopPerla 3 года назад

Why?

@snikrepak 2 года назад

@@DurgaswaroopPerla I believe the word Tea, has to do with it, op is either an American, or a funny Brit.

@sajithchamara6885 Год назад

And the accent 🤗

@inexp1 6 месяцев назад

'Just a tasta' 😂😂

@musicistheway7463 3 года назад

the man in the blue shirt turned into a meme in the last forty seconds

@zetadroid 8 лет назад

I see a bit of confusion in the comments, so let me throw some basic theory behind it. Some comments point out that PV=nRT might be useful to visualize what happens, but the formula is true only for ideal gases so it is not clear why it should apply to water and (even less) to the transition. The truth is more that the phase diagram of H2O has three phases (gas liquid and solid) in the Pressure-Temperature (P-T) plane and the lines separating these phases are not parallel to either the P or T axes for constant volume (V). Lines of constant P or T intersect the transition and different T or P respectively. In other words, by changing P or T I can cross the transition line at different T or P (in the video at P=0.75Atm we see the transition crosses at T=83C). The crossing of the transition line requires energy and H2O can stay in either phases as long as this energy cost is not fully spent. This phase coexistence is what we call "boiling." The guy was confused at the end because in normal life an exchange of T is more or less equivalent to an exchange of Energy. As a matter of fact the example at the end had in fact P=0 and T=ambient temperature, but energy was indeed exchanged between ambient and H2O molecules. It just so happens that the T of the transition was the ambient one so the bottle was "touchable."

@geniusmp2001 8 лет назад

One of my favorite physics demonstrations is using a shallow dish of water inside a bell jar, so that you can boil the water until it freezes. Boiling is a cooling process, because it removes the fastest moving molecules first, lowering the average temperature of the water.

@tophat2002 Год назад

Does any heat rise upward to the top of the jar?

@natminame3092 8 лет назад

These guys must have skipped high school chemistry

@Puppy_Puppington 3 года назад

What is Islam? God also said: “ you know what’s cool guys?!?! SLAVERY! BEATING WOMEN & PUNISHING THEM & giving them less rights! & the holocaust! & children getting + dying from cancer! & rape! & innocent people getting killed by martyrs & little kids getting molested! GENOCIDE! & EVEN better... MUTILATION OF CHILDReNS & InFANTS GENITALS!!! Killing homosexuals! Negatively Judging others/ condemning them instead of being open minded!” Hey let’s all follow this book! It’s gods will!!! Not like humans wrote the actual book!!! Wake up, you ignorant idiots. Man made god. Not the other way around... if there is a creator that has “rules & morality”, then it has a lot to fucking answer for... you know how hypocritical you guys are?!? Do you think it’s coincidence that where religion is HUGE it’s the most primal & violent?!?? Just look at the Middle East! How advanced are their societies?!? How well are they doing as an overall people huh?!? Major religions have slowed down humanity’s progress so much. I’m glad that it’s slowly dying out. You don’t need a false invisible deity lord to watch your every move to have morals... you can be an intelligent & respectful & loving kind person without having to fear repercussions of an asshole god... I prefer someone be kind from the bottom of their heart or mutual respect than they only do it because they were forced a crazy radical idea when they were kids that’s equivalent to having a gun stuck to your head... aka going to hell... it’s just ridiculous. Look at the radical religious terrorists & evil violent folk... they think just like you and are as close minded as you... open your mind. Advance. Grow. Move on. Or be just like them... stuck in a little bubble without compromise. The least you can do is not force young minds into this BS. Let them choose when they are intelligent and wise enough to decide for themselves... it should be illegal to instill these religious mindsets on kids... it seriously can traumatize a kid... especially after you mutilate their genitals & they live their lives thinking it’s wrong to be horny & they’re gonna go to hell because they got aroused or touched themselves. So fucked up. Radical crazY type of Religions have got to goooooo.

@Pheminon1 3 года назад

Bruh I have been out of highschool for 6 years and I completely forgot about this.

@thelatenightgamer2624 3 года назад

@@Puppy_Puppington I know for a fact your a ex Christian who is exactly 14 years old and lives in America

@Puppy_Puppington 3 года назад

@@thelatenightgamer2624 yeah. Wanna double down on that bet and add me on social media or directly video call me & tell me that with your shitty grammar. Or hell... I don’t mind meeting up in person. What’s up? When can you meet to confirm your theory.

@Sunny_8418 Год назад

@@thelatenightgamer2624 and what am i ? 😂

@ollie9518 8 лет назад

Hold the bloody camera still

@user-pc9bd9cf2o 4 года назад

I was just debating my mom about this... had to prove her wrong LOL

@ontariobuds 2 года назад

lol. I love this. She just told the guy she is going to boil water without heating it and he says “well because you can’t” Dude, she JUST told you she is going to do it. Did you think she was joking? Lol

@shitpoststatus7508 2 года назад

But she didn't

@ontariobuds 2 года назад

@@shitpoststatus7508 she totally did. I didn't think I would have to type out what happened but she changed the water from a liquid to a gas without adding heat. She made it boil without adding heat.

@Ivan_StandWithUkraine 8 лет назад

Did they drop out from the 6th year of school?

@foobars3816 8 лет назад

That camerawork... omg... really?

@theirisheditor 8 лет назад

I wonder if how difficult it would be to make a tumble dryer that uses this principle, i.e. draws a vacuum to boil the moisture off clothes, assuming this would be more energy efficient than current dryers.

@MrJewripper 8 лет назад

what's with the extreme close ups. holy shit I don't want to see their nose hairs.

@ButtKraken01 8 лет назад

why not?

@CsharpPreza 8 лет назад

I would agree if she weren't pretty.

@avillp 8 лет назад

+Filip Kopecký I would agree if you weren't able to land a plane in between her eyes.

@DuncanMargetts 8 лет назад

Cringey acting.. really cringey.

@atizeg 8 лет назад

That vacuum was huge. It wanted to suck the camera out of this universe.

@realfantasyauder9489 3 года назад

I’m sad this nice joke is lost here... someone take it yo another science video.

@kasym 4 года назад

"Hey how do you think we should retain viewer attention?" "Cut to a different shot every 1/10 of a second." "Brilliant!"

@frosthadesph9645 3 года назад

When boil water it losses heat because he higher energy molecule evaporates leaving lower energy molecules that cause to temperature loss (or heat loss)

@kemalrifky2190 8 лет назад

Bring back james may

@xandrios 8 лет назад

This is why, with a high-pressure pan, you can cook food faster. Because due to the positive pressure the liquids heat up far above 100 degrees before they start boiling. And higher temperatures means that the food is cooked faster.

@phajthoj 8 лет назад

1:20 "Now im going to blow...." Me thinking wait for it......... oh nvm

@gir5o1 Год назад

lol love how his take on this interesting fact is "that's HUGE news!"

@germainchevrier6749 2 года назад

For a split second that guy looked ready to burn a witch lol

@martinistse 8 лет назад

the camera is really really clear

@Grizzly_Lab 8 лет назад

The opposite is, indeed, the way a pressure cooker works: by raising the pressure, the boiling temperature will raise together, so you can cook into water which is not vapour at more than 100C/212F ;)

@therealEmpyre 8 лет назад

What about sublimation (a solid turning directly to a gas without being liquid in between)? That would be cool to see!

@Yoginiengineer 4 года назад

Naphthalene balls are the best example, you can do that at you home yourself.

@volikoto 8 лет назад

I'm a full grown adult but I still didn't know about this.

@Puppy_Puppington 3 года назад

Well all is forgiven if you were born in the 80s or 70s or earlier... but 90s and up you should’ve had this like ... as general ed in your highschool. For sure. But idk cause my sister was born later around 98 and she’s pretty stupid & didn’t even TAKE chemistry in Highschool.... sooooo. I don’t even know how she got away with that.

@Quintinohthree 8 лет назад

It would have been even cooler if you'd shown how the water in the flask actually cools down. I've once managed to cool down a mixture of ether and water (and maybe ethanol too) so much that some froze, just from pulling a vacuum.

@abhinavbhagwat746 4 года назад

Im in high school and I feel superior to these fellas now 😛😂😂

@Puppy_Puppington 3 года назад

You are buddy!! Keep that education going. It’s straight power!!!

@rjhrjh3 8 лет назад

Question. If you boil water by taking out the air does the temperature of the water go down? I suggest it will do so. This is where the energy comes from to turn liquid into gas.

@ResDogOrange 8 лет назад

Oh god, please keep the cameras stationary

@PTran-ng6gl 2 года назад

Can we use this method to filter clean drinking water from sea water? Or drying clothes? How much energy we can save compare with conventional way?

@vision78678 10 месяцев назад

can we use this method of low pressure boiling to clean water ?

@edss 8 лет назад

as a science presenter how many times can you not know about something and still present it?

@edss 8 лет назад

Hi Greg! I do love your other videos don't get me wrong, they're definitely educating and entertaining to watch. How do I find out more of your programmes on BBC? I'm here in the UK but I don't think I've ever seen you on air?

@MagnaMoRo 4 года назад

Yes, so think people! It is posible to take a huge old boiler train engine, hook it up to an electric generator and run it at room temperature merely by placing the hole unit in a vacume chamber. And you don’t have to burn cole or wood or gas or anything.

@nevermindthegrind 4 месяца назад

That's how you make ice tea. Never mind.

@vibingwithvinyl 8 лет назад

I wish the camera would stay still. The constant movement makes my head hurt.

@GrammeStudio 6 лет назад

this explains the difference between heat (kinetic energy) and temperature! omg i finally get it. so does this means solute like tea would still dissolves as easily in non-heated boiling water as it would in heated boiling water? so does this mean a cup of tea brought from earth surface to outer space would start boiling? why or why not?

@TheRealMrMagic 4 года назад

Both very good questions. If tea from the surface went to the Moon inside the rocket with the astronauts it would not boil because the cabin is pressurized. If the Tea was riding on the outside of the rocket somehow and could survive the launch into space, the liquid would sublimate and drift off as soon as they made it into space.

@Seriouslydave 2 года назад

Probably a good reason they wore pressurised suits or their bodies would boil

@heoTheo 8 лет назад

As a cryo engineer.. all I'm thinking is.. that water vapour is soooo bad for the compressor pump. :'(

@herrmayhem1915 8 лет назад

Haha! I was hoping that the flask wasn't going to implode.

@heoTheo 8 лет назад

I think the rubber would be sucked into the bottle before that happens :P

@heoTheo 8 лет назад

short answer is yes. These compressors often can be bought with inlet filters for vapour (vapour traps). Better answer is use a Venturi Vacuum Pump to get most of the vapour out of your system. Then go to the conventional pump, then to the turbo pump. Still might need an oil change now and then.

@medotedo8410 4 года назад

Which *Colligative Property* does it shows in this video ?

@medotedo8410 4 года назад

Which *Colligative Property* does it corresponding to ?

@jeffreysokal7264 7 месяцев назад

Technically, heat is involved. If she measured the temperature of the water before the vacuum pump was started, and observed the thermometer while the "room temperature" water boiled, you'd see the temperature of the water drop. Even though the water boils at room temperature, under a certain level of vacuum, heat is still required to change the liquid molecules into a vapor.

@ajubation 3 года назад

Will the temperature reduces ?? Like the condenser ??

@ryklatortuga4146 8 лет назад

To the Hyperbaric Chamber, That Hyper strength Lapsang souchong won't brew itself.

@yksalonso День назад

İngilizcem berbat olduğu için Türkçe yazacağım. Çevirebilirsiniz. Su kaynarken aslında düşük derecelerde, suyun kaynama sebebi düşük başınç. Kabı yeniden havalandırınca kaynamayı durdurur çünkü dış etkiyle kaynadı. Dokunduğunuz zaman halen soğuktur ve normal koşullarda kaynatmak için artık 100 derece sıcaklık lazımdır.

@enginnering_buddy 3 года назад

they need to go back to highschool , that excitement lol

@DodongWerkzPh 4 года назад

teacher: give me examples of solid? student: water@0degrees celcius. teacher:?

@Mayurchikhale8714 3 года назад

Can i use this methad in my essential oil plant to boil water..❓ Anobody Plz reply

@Kabbinj 8 лет назад

well, it also has to do with temperature. Nothing will ever boil at -273C. But yes, lower pressure = lower boiling point

@SchneiderStudios 8 лет назад

Huge news

@thefarmlifeinhd 3 года назад

who noticed that the vapor pressure was lower than usual? Must have been a bit warm in there, or residual heat from earlier. At room temp, ~20C, water turns to vapor at a pressure of 2.3392 kPa. Not much of a difference. You also have to take in account the specific volume.

@manu9629 8 лет назад

I wonder if you can make beer like this...

@EricPham-gr8pg 6 месяцев назад

So when introduce small amount water when piston vacuum and ignite then we had combustion without fuel other than water constituents of hydrogen and oxygen and warm air

@KyleAButler 5 лет назад

The camera operator seems to have had a few too many beers before shooting.

@virenderbhardwaj3137 Год назад

But can anyone explain ...even if we add ideal non volatile solute (at atm. Pressure) ...we know it doesn't change any molecular bonds between solvent....so why does it take more energy now to boil it??

@ArdalanHamann 8 лет назад

That rather interesting phenomenon is called Cavitation and mechanical engineers most of the time find it quite unfavorable

@agasthyatoygardeningk8935 7 лет назад

I am great fan of this program

@minato99_99 6 лет назад

It is Superb.........!

@Puppy_Puppington 3 года назад

But if the molecules are still being “boiled” then why would it taste different? Wouldn’t that just be that it doesn’t taste as hot. So an issue with perceived temperature? Rather than taste? All the molecules are being affected by the Change of state... so what’s the difference besides it’s temp????

@mieraftesfai6919 3 года назад

How did you set the experiment, can you please list all the components

@sundaramss1545 7 дней назад

Mist is also vapour state of water

@ibraheemali9541 3 года назад

Can you please list the equipment you used to recreate the experiment in a classroom for children?

@plokijum 8 лет назад

I don't believe that bald didnt know about this unless he is a very mature looking 4th grader.

@TheBigBigBlues 8 лет назад

Things boil at different temperatures. Look at liquid nitrogen, it's boiling, and it's freezing cold. The Dom guy on this can't be that thick surely? Also, the camera, again, all over the place, really annoying.

@DrDeathAribertHeimHk47 8 лет назад

or its just staged reaction.

@Quintinohthree 8 лет назад

It's quite remarkable to see something start boiling at the same temperature as at which you had already seen it be liquid. Sure nitrogen boils at rediculously low temperatures, but what about that suggests that water could boil at room temperature? It's a different substance and so it has a different boiling point, it makes total sense.

@philno 8 лет назад

vapour pressure point

@TheFounderUtopia 8 лет назад

Quintin, the guy literally said that things have to be really hot to be boiling. Your whole response to Andrew is based entirely on you not paying any attention to the video.

@Quintinohthree 8 лет назад

But explaining that different substances boil at different temperatures doesn't explain how the same substance can boil at different temperatures. That is what the video explained. Your whole response to me is based entirely on you not paying any attention to the video and how it differs from Andrew's response.

@mpozainno 5 месяцев назад

Is room temperature in UK the same as room temperature i the sahara desert? Just asking for my friend. 😊

@26MbtD 3 года назад

When saturated vapour pressure becomes equal to the pressure of the system, that is when boiling starts.

@saberline152 8 лет назад

isn't that called the armstrong line ? the pressure (in our atmoshere) at which water spontaniously starts to boil

@seannolan343 2 года назад

Returns to water at normal pressure. No loss of volume

@sillylittletroy 8 лет назад

Yeah... Argue with the scientist. That makes you look reeeeeally smart.

@salehalsekhan697 5 лет назад

actually boiling has something to do with temperature. However, it's not temperature alone that affects boiling but temperature and pressure actually. see at very low pressures water will boil at room temp. But if you cool it down at that same pressure it'll stop boiling and you'll have to reduce the pressure even more to get it to boil again. to put it neatly the pressure water boils at some specific temperature is called the vapor pressure.

@lewdendorff4120 8 лет назад

I approve this tea. BRITS ALWAYS APPROVE TEA!

@SaturnCanuck 8 лет назад

OMG, you are the first British person who use the proper Celsius and not Centigrade. Awesome!

@zetadroid 8 лет назад

the phase diagram is tilted and so that the phase transition line is not oriented with either P or T, come on guys

@priyankakarad9036 4 года назад

Is there any other fluid which boils ata room temperature like water??

@BrentBlueAllen 8 лет назад

0:53 I wish she had explained how "that's why tea tastes rubbish on a plane." Is it due to the mechanism by which tea steeps? Is it that the cooler temperature at time of consumption makes the flavor less apparent to the drinker?

@G3HP 8 лет назад

That guy is the best actor ever, because I would not have been able to keep a straight face saying stuff like that XD To be fair, it is interesting to see water boiling at room temparature, but if you know the first thing about how boiling works, then you know it's tied to both temparature AND pressure. Of course the kind of people watching this on TV probably aren't the kind of people who would know that though.

@mysticpointwatersports204 3 года назад

this is what confirms normal room temp in space

@iulianopinca545 8 лет назад

that is wrong because boiling is influence by presure and heat(energie) to boil to get from a state to a another but because the presure was so low the energie requiered to boiled was the room temperature.interesting but the information lacks

@subodhupadhaya309 2 года назад

does the water boiled by vaccum is safe to drink

@harlyslamm2888 4 года назад

Dom is definitely made for the radio....

@user-mi5zs4lq1y Месяц назад

الفيزاء افضل انواع العلم

@re5o28 2 года назад

If someone made a way to trap a stream of water (e.g. faucet, garden hose, etc.) from a standard atmospheric pressure outside source into a vacuum where it immediately boils at room temp, this would be a tremendously great invention for plumbing. It would hafta be immediate, though as the device would hafta stay at constant volume (even though it has a constant flow increasing it). Could this be done chemically where all input chemicals are inert & the end results inert?

@SodiumInteresting 2 года назад

Should've mentioned the liquid will get colder as the more energetic molecules leave as vapour

@Ivankarongrafema 8 лет назад

Actually you just need 2,3kPa of pressure to boil water at 20°C. Total vacuum is quite unachievable.

@cafesingularity9874 6 лет назад

Now they must rewrite all food recipes: Put egg in boiling water for 10 min (DO NOT USE VACUUM PUMP TO BOIL WATER.) HAHAH

@ragaayush2982 6 лет назад

The gas molecule in water are coming out from the water therefore the bubbles are coming out from that in the form of gas which was oxygen It wasn't boiling only the oxygen molecules are coming out from that .

@drd1924 2 года назад

So then, if boiling has nothing to do with Temperature....What Temperature is piping hot?

@kentvun 8 лет назад

too much close up shot.. very dizzy to look at with abit of shaky cam in close up

@Matlockization 8 лет назад

So if water is boiling at room temp then what's happening at the subatomic level ?

@YeCannyDaeThat 8 лет назад

How come a piece of lead placed in a vacuum won't melt? Why only liquid to gas.

@588148 4 года назад

now i get why people with British accent sound intelligent

@hothothotmale 8 лет назад

Pressurised to 75%. What are you going on about? Try pressurised to 8000 feet.

@onemicron38 6 лет назад

Thanks for clearing the concept map

@adrianciuhu9523 7 лет назад

Can you turn coId water in to room temperature water by doing this?

@FinaleCadence 8 лет назад

This is INSANELY cool. I love videos like this.

@rythmicjoy8294 7 лет назад

the best video that I got goosebumps when I completely understood it

@KrisSchall 8 лет назад

in fact you actually cool the water that way too.

@yashkumar-ru1eh 2 года назад

every neet aspirant should know this phenomena

@Dave__AC 8 лет назад

You mean partial not full vacuum right? That's a pretty important distinction xD

@digitalsublime 8 лет назад

Interesting, but to much teeth shoots

@cian4880 5 лет назад

why is she so mad

@thanksfernuthin 8 лет назад

This is painful. I give them credit for giving someone with Parkinson's disease a camera operator's job. The two guys pretending they didn't know planes aren't pressurized to sea level and that water would boil in space... all to make the girl seem "cool". Painful and devastatingly awkward. And who's niece is she anyway? She must be related to somebody!