English people, as said in the video, only use it for summers 95% of the time we use celsius but america uses farenheit MUCH more than english ppl do =D
@grayishjedi well it could be me remembering wrong (which is probably true) but he said water boils at a lower temp when its pure or somethin like that. i'm not a genious (obviously) but i can see how it makes sense
@beastological naturally if the temperature lowers to minus 72 C then the water would freeze. You can however make ice sublimate (solid to vapor) at minus 72 C if you lower the pressure to less than 1 Pa or roughly 9.8×10^-6 atmospheres (0.0000098 atm). also standard pressure is 1 atm or 101.3 kPa.
dara is correct, who said you cant have vapour at less than 100 degrees celsius? and he made me laugh when he said "where the fuck is that gonna come in?"
@MrSouthernNorthener depends how old you are. I'm 22 and only use celcius but my 55 year old dad still uses farenheit. Just like with imperial and metric measurements, it all depends on how old you are in the UK.
1-2 minus C is cold? No! Minus fucking 30, that's cold bitching weather xD Trust me, I was like. Mum! I'm off ice skating on the lake! (Opened the door) Crap it's cold, should probably get a jacket or something xP
I live in the north of Sweden -.-' like real north, not just north, but like.... North North xD
But being serious for a moment (and I know I could look this up but I'm sure someone would love the opportunity to tell me) I know England is a country, but what is Britain, or the United Kingdom for that matter? What do you call a collection of countries like that?
@Elheru42 The United Kingdom is basically a Union of several countries, England, Scotland, Wales, and northern Ireland. Historically speaking, England conquered Wales, and I think due to different monarchies marrying into each other, Scotland and Ireland (Later northern Ireland) essentially combined with England under a single crown.
Britain and the United Kingdom are basically the same thing. Terms used to describe this collection of nations.
Oh good, thank you for that. I felt something was incredibly disturbed in my soul. I was restless and seemed to have developed a severe twitch in my eye. Last night I went to bed but kept thinking that the world was slightly off alignment and something disastrous would befall me. And here I find out today that I had said Britain was a country. Thank you for putting that to rest, everything is right in the world again.
The British are incredibly inconsistent with measurement. I'm sure it must drive many people in Britain completely crazy the way the country has never decided whether they are imperial or metric.
@lpden i don't know about now cos i don't live there anymore, but they used to always use both in the weather forecast, and automatically i did the same thing... think in celsius for cold weather and fahrenheit (thanks for spelling that for me) for hot. i thought i was the only one but apparently not!
Indeed changes in pressure can change the boiling point of water, the same principle is applied in pressure cookers and I believe the boiling point of water on Mt.Everest is 69 °C due to the decrease in pressure. PV=nRT is one of the most fundamental gas laws that helps show this (increases in pressure is directly proportional to an increase in temperature so long as all other perimeters are a constant).
You can't look at strictly the point because 0 C is just too baffling to examine. You have to imagine it like a two way street. It's where rising temperatures make room for melting, cooling temperatures freeze, and there's an express lane for water vapor.
This is stupid the answer is very close to 100C at standard pressure or 99.97C. Any physicist would tell you that is the answer. As a physics student it bothers me that a TV show that I normally like would go about and tell people lies about the boiling point of water.
@RafnHeimiss Let me ask you a question. Outside the world of physics, who cares if water does not boil at 100C but rather 0.3C lower? I will answer that for you.. It is 0.
You are right of course. Water boils at 99.7C. So next time, for example, your mother says to boil water at 100C. Tell her that she is being stupid. It boils at 99.7C and it can't possibly go to 100C unless the van der waals forces that hold the hydrogen and oxygen ions together have been overcome, causing a change of state.
@THX43110 You totally misunderstood me, I think the show is being stupid saying that 100C is not the right answer. Also it's quite possible that it would go a little above 100 or a little below, even at sea level, because the pressure around us varies on daily basis. When would someone ask someone else to boil water at 100C? Boiling usually does not need a thermometer to be recognized.
Water can boil at any temperature you like. It depends on the air pressure. In the vacuum of space, for example, your body temperature would cause your blood to boil off into space, whereas at the bottom of the oceans, liquid water exists near volcanic vents withut boiling at temperatures of more than 400C. You can boil a flask of water by holding it in your hand, if you have a vacuum pump handy (and I could come and do it on your show if you'd like to see it) Bill Dixon
@tallbillbassman but if the air pressure is significantly lower than atmospheric pressure, then technically, its not boiling...the pressure is just lower, so its just...depressurizing...
I always thought that 99.9% of youtube users who comment are the saddest most pathetic people on the planet.... till I started watching QI clips and realised it's 99.8% - you boffins lol. knowledge is power
Triple point is a point at given temperature AND pressure at which three phases coexist. For the triple point of water (gas/liquid/solid) this temperature and pressure are approximately 0 °C and 611,73 Pa (0,006 atm). Not to mention the fact that water has multiple triple points.
And the babbling about 0 °C not being the point at which water freezes is also rubbish, because it IS exactly that. It's the temperature (at 1 atm.) at which the liquid and regular ice can coexist. (goes both ways)
@Mieljean Isn't it like ice's temperature will rise until it gets to 0c, stay at 0 til it's in a liquid state, go up to 100c, stay at that til it's steam, then go up from there, and vice versa?
@Mieljean i the triple point of water was rubbish, but i think originally it was meant to be aimed at all the different units in use. if he'd originally said "100°C" instead of just "100°" he'd got the point.
I have gradually come to use Celcius having moved from Farenheit to centigrade over some 40 years!
So why do we talk of miles per gallon when petrol is sold by the litre? And what with that 0.9P on the end of every petrol price, surely its not legal.
If its so annoying then why are you having a go at me? Surely you could've saved yourself the time (and obviously the stress) of telling me not to correct something if its so annoying?
@FloormanUK get a grip took all of 10 seconds to write and didn't stress me out in the slightest... not sure why you think it would. If you don't want a reply, don't comment?
@spit0flip You are correct in stating that, and QI realises it a little later on. The next time Dara is on (I forget which episode), he loses those points and gets a retrospective forfeit.
Regarding the debate about Celsius versus Fahrenheit - it's a case of "horses for courses". If you've grown up using one system, you're more likely to believe it's superior to the other. Fahrenheit is more granular and was specifically developed to reduce decimals; on the other hand Celsius sounds more logical for those familiar with metric, as the reference points (based on one of the most abundant molecules on earth) are 0 and 100. Incidentally F dates from 1724 and C from 1744.
On October 17th (before if you can't make it) we will all watch "Not Afraid" in honor of the greatest rapper ever's birthday. Let's give him the best birthday present ever: the highest viewed video on YouTube!! Let's give him what he deserves and what Justin Beiber does not deserve to have!
Copy and paste to all Eminem videos and all music videos let's get this noticed quickly!
@celestialsalamander The flashing lights means that the answer was both obvious and wrong which is when they deduct points . You don't lose points for answers that are just wrong .
@catfacetheoriginal yes i do? I wasn't speaking like i might have to do it, I was speaking like I do do it. People always ask me what the temperature is in fahrenheit. my ex was british and I had to translate 100F like 40 times. fahrenheit is the superior one. its more accurate and less ambiguous without involving multiple decimal places, so idk why you would call me a douchebad.
@giponygirl I think it depends on he age of the person. Britain went metric in the 70's. I grow up about that time and so I am more comfortable using Celsius. Older people are stuck with Fahrenheit.
@limetang My point was with Stephen Fry saying that we (Brits) use Celsius for the cold and Fahrenheit for hot days, but I don't. The reason being that he is older than me. When I went through school it was Celsius and centimetres. For him, Fahrenheit and inches. It's the same in factories, my first job was in a place that started in the 50's, everything was inches. Now the newer ones I work in, it's all millimetres.
@psfree40b I think it generaly depends on mood rather than age alone. I grew up learning celsius and meters/km etc. but generaly use hybrids of measuring things in feet, meters or miles depending on length. I think his point is valid that people use those temperatures as fahrenheit sounds more impressive when it's hot, and celsius when it's cold.
@giponygirl Lol Fahrenheit is superior. You obviously aren't a scientist. The SI system is far superior to the imperial scale, it is much easier to do complex calculations with SI. Sure, expressing idioms and the weather is more often done in F in the US, but for everything else, SI is better. Also, Fahrenheit is a pretty arbitrary scale... 0 degrees F is "A cold winter night." lol wut. Why do you think all scientists and engineers use Celsius (and Kelvin)? It's better.
@tanmaniac youre obviously an idiot. celsius is not part of the SI system. kelvin only uses celsius because celsius was the more popular degree scale. fahrenheit is more precise. just because its used by europe doesn't make it SI. idiot. scientists use celsius because its more popular.
theres a little jingle insulting the stupidity of celsius. 0's freezing 10 is not 20's normal 30's hot.
@giponygirl Oh god I looked back at what I said this morning and realized how retarded I was. Of course Celsius isn't SI, Kelvin is. Sorry, I was recovering from staying up for 60 straight hours working on Calculus and chem and APUSH homework (and going to school). Sincerest apologies, I'm usually not so stupid.
@giponygirl "just because its used by europe doesn't make it".
It's actually used by the entire world except the United States. Just like the metric system, actually. But an uneducated and xenophobic American like you couldn't know that.
@Saruman38 that quote is taken out of context. i was calling him xenophobic by saying that all american systems of measurement are automatically inferior to those used by the majority. i did know that it's used by the majority of the world. it isn't the entire world. i believe burma used fahrenheit still.
why do you have to be a dick? seriously? are you incapable of just saying why you disagree instead of a huge list of unsubstantiated insults? be a gentleman.
@giponygirl Fahrenheit is inferior, as are all non decimalised units of measurement A degree on the Fahrenheit scale is 1⁄180 of the interval between the freezing point and the boiling point. and it takes the body temperature of a horse as a point of reference 96f(this is stupid). water is one of the most abundant and fundamental recognizable compounds in the universe, defining its triple point as zero, is genius kelvin represents a better option than either but Fahrenheit is miles behind both.
@1qaz6yhn5tgb Kelvin is based on Celsius. Rankine is based on Fahrenheit. The only reason Kelvin was chosen was because Celsius was already the most popular. We aren't talking about scientific scales, I agree that one that starts at absolute zero makes more sense. He was attempting to make a medical scale with the human body as 100, but he failed and didn't try to fix it. His zero was based on the coldest it could be observed to be outside. What it's based on is irrelevant, though.
@1qaz6yhn5tgb Both Celsius and Fahrenheit can be said to be decimal, I don't understand why you think Celsius is more decimal than Fahrenheit. You don't have kilodegrees, and even if you did, it could be applied the same to Fahrenheit. Water is very abundant, that's true. What you don't seem to understand is boiling points and freezing points are not static. Have you taken chemistry? It is all based on the pressure as well as the temperature, among other things.
@1qaz6yhn5tgb A degree on the Celsius scale can be said to be 1/101(+/-) of the interval between freezing and boiling. As we've already established, they change, so your cute little 0 100 thing is irrelevant. Besides, why the freezing and boiling? What makes those special? Because of the larger number of degrees between freezing and boiling, you can see that Fahrenheit has a higher "resolution" of temperature and is therefore more accurate. Fun Fact: Celsius started with 100 being freezing.
@1qaz6yhn5tgb Water is really not that fundamental. I would say carbon is more life-y. Why don't we have a temperature scale with carbon freezing under 1atm at 0 and boiling under 1atm at 100.
Another thing, 100 is not decimalized. its centimalized. Why doesn't Celsius make 0 freezing and 10 boiling? Would that be as good? You can decimalize it by saying "it's 3.56 degrees, I'm so hot!" lol
@darris321 read the scifi novel "Calculating God" by Robert Sawyer. Many excellent conversations are found therein about the nature of life, including one that focuses on the uniqueness of WATER.
@giponygirl sometimes a SciFi WRITER is also knowledgeable about Science.
Do you think nothing science-wise can be learned from Carl Sagan's novel "Contact"? (very different from the movie, btw).
Also Robert J Sawyer (author of Calculating God) is usually very good at learning about accurate science to include in his books. In CG the discussion about water is something unique, I'd recommend it just as food for thought. All I'm saying :rolleyes:
@Saruman38 also one more. one reason fahrenheit is good (besides the others i've listed) is because the creator didn't go in with a "choice of the boiling and freezing point of water" why water? what makes water so fantastic? why do you celsius defenders love water points so much? why not sodium? i'm sure one of the elements conforms more regularly to fahrenheit, does that mean fahrenheit is superior? no, that's a preposterous thing to defend. 32 and 212 are easy enough numbers also.
@giponygirl I don't really see why Farhenheit is the superior system. It's absolutely illogical in its choice of freezing and boiling points. But I guess you're just a retarded, self-centered, arrogant, ignorant and slightly xenophobic American. Oh, and by the way, why does 95% of the world has to keep converting metric (which is unquestionably superior to your stupid US measurements) for you yankees?
@Saruman38 freezing and boiling points is the ONLY thing that celsius has going for it. btw, that is ONLY on water and ONLY under 1 atm of pressure. l'm obviously not being that arrogant because i openly admit that the metric system kicks the shit out of the imperial system. so how about you quit being a douche. is it really that hard to remember 2 numbers? do you have so little faith in humanity that you think its difficult to remember 32 and 212? celsius is NOOOOT metric, retard.
@Saruman38 fahrenheit is the superior system because it is the more precise system. Celsius was invented with the intention of having water freeze at 0 and boil at 100. in my opinion, that is a horrible reason to say it is superior because its not even consistent. fahrenheit has more degrees between the freezing and boiling of water- the imperial system is bad because you have to use a lot of decimals for precision that is the exact same thing with celsius. in fahrenheit, that doesn't happen.
What was the original question? Was it: "at what temperature does water boil", or "at what temperature did Dr. Celsius decide water boiled"? If it's the first question, as indicated by the clip title, it was never properly answered.
I didn't know that British used both Fahrenheit and Celsius. Is that true? I kind of like that because Fahrenheit I think is more useful for describing weather. 28 just sounds unimpressive.
@Setzer yes but centigrade is much more common. Farenheight is only really used in newspaper reports for very high temperatures in summer. You also sometimes (very rarely) hear of "degrees of frost" which is for cold temperatures and is the number of degrees farenheight below freezing (32 F). ie 26 F would be 6 degrees of frost.
@Setzer it's less true these days but 10 years ago it was very commonplace and most people over 45 still use both. Younger generation use Celsius exclusively.
This comment has received too many negative votesshow
i dont understand the point of this show. its just smug british people sitting in a semicircle looking at the really smug guy, saying well known, basic facts.
On the contrary, this show adresses what many assume to be well known basic facts and corrects them. Also, the whole point of it is not to be all "Oh, we're smarter than the rest". It's a comedy show, which happens to also be insightful. And if you fail to understand that it's your loss.
@stevendurr They are not basic facts at all, but the correction of commom misconceptions. Also, the panel is made up of British comediens - not smug British people. I have no idea where you get 'smug' from watching this - obviously there is a bit of a complex there! If you do not like British people then you probably should not watch a posting by the BBC.
@firestone334 I thought for a moment that you meant the triple point varied, and was about to jump down your throat, but then I remembered that that wasn't really the topic.
They're right but only partially. Water only boils at 100c at nominal atmospheric pressure at sea level (1013 millibars). On a mountain top it boils below 100c as the ambient pressure is lower. In a car engine it boils above 100c as the cooling system pressure is higher (the cooling system is pressurized precisely to prevent boiling, even up to 110c or so). That's why a cup of tea made on a beach tastes better than on Snowdon, except that it doesn't because on Snowdon you appreciate it more!
Stephen is wrong, water freezes and melts at the same exact temperature. If you keep water at perfectly at that point the molecules will constantly be shifting.
@porgy29 "Stephen is wrong, water freezes and melts at the same exact temperature."
.
It is more accurate to say ice melts at zero than to say water freezes.
.
Water can freeze at zero but it does not consistently form visible crystals at that temperature. Water can be supercooled to well below zero and remain liquid. So the liquid appearance is no sure indication of it's temperature.
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Ice however, will always melt at zero degrees, which makes melting the more accurate indicator.
@Noisegator How dare you reply to a YouTube post with actual information?? If you let on about nucleation sites for freezing, you might as well spoil all of the magic beer freezing videos! Next you will be blabbing about super-heated water and "bumping" or "explosive boiling." Sheesh.
When people try to compare the US to their country why do they always have to say things like "Asia", "UK", "EU" or the "Middle East". They never actually try to compare just their single country to our single country, they always have to involve other countries.. Why is that?..
@SmokeyCough It might be to do with Geography but come to think of it,the US has all those Nations in the country.A lot of the people in the US cannot be 'pure blood Californians'&all that because the natives are the Native Americans/'Red Indians'.The US has always been compared with countries and always will do.People can be brought up to say one country/nation is better. It's just preference. And this is coming from a very proud British person. :). It's mainly got to do with history and geo.
The british are awesome!
DarkStormLee 2 days ago
@DarkStormLee yes we are
SpartanStig117 2 hours ago
Math!
bastlake 2 weeks ago
Celsius is just a superior system to farenheit. America is the only country that uses farenheit.
ProtestantsRUs 4 weeks ago 18
@ProtestantsRUs No, it's not, seeing as they use it in this video and they're not American...
Redheadfury 3 weeks ago
@Redheadfury
English people, as said in the video, only use it for summers 95% of the time we use celsius but america uses farenheit MUCH more than english ppl do =D
XxSaltandSugarxX 1 week ago
@XxSaltandSugarxX Depends who you're talking to.
Redheadfury 1 week ago
Triple point is actually 0.01 and he got points deducted a series later
usuckbad2 1 month ago 2
my chem teacher said that pure water would boil at -72 c or sumthin like that. wonderin if hes right or not, someone respond plz
beastological 1 month ago
@beastological he was trolling, must be
ikzelf100 1 month ago
@beastological If that c stands for celsius, then your chem teacher should retake his kindergarden courses :facepalm:
grayishjedi 1 month ago
@grayishjedi well it could be me remembering wrong (which is probably true) but he said water boils at a lower temp when its pure or somethin like that. i'm not a genious (obviously) but i can see how it makes sense
beastological 1 month ago
@beastological naturally if the temperature lowers to minus 72 C then the water would freeze. You can however make ice sublimate (solid to vapor) at minus 72 C if you lower the pressure to less than 1 Pa or roughly 9.8×10^-6 atmospheres (0.0000098 atm). also standard pressure is 1 atm or 101.3 kPa.
theweester 1 week ago
dara is correct, who said you cant have vapour at less than 100 degrees celsius? and he made me laugh when he said "where the fuck is that gonna come in?"
weatherallc05 1 month ago
degrees ??? you mean celsius ? ssaying 100 degrees is just lazy
weatherallc05 1 month ago
@weatherallc05 In the UK we only use Celsius.
MrSouthernNorthener 1 month ago
@MrSouthernNorthener shame lol i like to use fahrenheit. i can convert myself:)
weatherallc05 1 month ago
@MrSouthernNorthener depends how old you are. I'm 22 and only use celcius but my 55 year old dad still uses farenheit. Just like with imperial and metric measurements, it all depends on how old you are in the UK.
soundslave 1 month ago 3
1-2 minus C is cold? No! Minus fucking 30, that's cold bitching weather xD Trust me, I was like. Mum! I'm off ice skating on the lake! (Opened the door) Crap it's cold, should probably get a jacket or something xP
I live in the north of Sweden -.-' like real north, not just north, but like.... North North xD
NoNamedMedia 2 months ago
Britain is the island.
sarahkirky 3 months ago
the temperature at which water boils depends on the pressure
TheMonkiAss 3 months ago
nostephen that would be the english that do that up in scotland we say everything in celseus cos we dont like to exaggerate our postion lol
reksub10 3 months ago
But being serious for a moment (and I know I could look this up but I'm sure someone would love the opportunity to tell me) I know England is a country, but what is Britain, or the United Kingdom for that matter? What do you call a collection of countries like that?
Elheru42 3 months ago
@Elheru42 The United Kingdom is basically a Union of several countries, England, Scotland, Wales, and northern Ireland. Historically speaking, England conquered Wales, and I think due to different monarchies marrying into each other, Scotland and Ireland (Later northern Ireland) essentially combined with England under a single crown.
Britain and the United Kingdom are basically the same thing. Terms used to describe this collection of nations.
Gearfreid 3 months ago
Oh good, thank you for that. I felt something was incredibly disturbed in my soul. I was restless and seemed to have developed a severe twitch in my eye. Last night I went to bed but kept thinking that the world was slightly off alignment and something disastrous would befall me. And here I find out today that I had said Britain was a country. Thank you for putting that to rest, everything is right in the world again.
Elheru42 3 months ago
The British are incredibly inconsistent with measurement. I'm sure it must drive many people in Britain completely crazy the way the country has never decided whether they are imperial or metric.
Elheru42 3 months ago
@Elheru42 Britain isn't a country.
TokenStudios 3 months ago
Anyone else get commercials about bottled water with this vid?
Tarnaggy 3 months ago
@Tarnaggy
or commercials about bidets
KitchenKiller95 3 months ago
Damn that girls 92 degrees Fahrenheit...
ewyw65 5 months ago 2
Fahrenheit is just rubbish isn't it. Yeah, yeah? For goodness sake just stop using it. :-)
jwheat65 5 months ago 69
@jwheat65 I like Farenheit. It is a much better word and scores more in Scrabble.
JohnS1704 5 months ago
@JohnS1704 :-)
jwheat65 5 months ago
@JohnS1704 But only if you spell it correct ;)
patatje 5 months ago
@patatje You have obviously never played Scrabble with my friends.
JohnS1704 5 months ago
@jwheat65 Personally, I prefer to measure temperatures in Rankines.
ProjectFreeSelf 4 months ago
@jwheat65 Personally, I prefer to measure temperatures in Rankines.
ProjectFreeSelf 4 months ago
@ProjectFreeSelf A Fahrenheit version of Kelvin?? *facepalm* Geez...
jwheat65 4 months ago
He thinks -3 is cold?! The man has obviously never lived in Canada!
issyvoo2 5 months ago 3
Since we do we use Fahrenheit in Britain? I've never hear anybody say "it's 90 degrees outside".
lpden 5 months ago
@lpden i don't know about now cos i don't live there anymore, but they used to always use both in the weather forecast, and automatically i did the same thing... think in celsius for cold weather and fahrenheit (thanks for spelling that for me) for hot. i thought i was the only one but apparently not!
0deer7 5 months ago
haha alan is heaps cute
erantio 5 months ago
Indeed changes in pressure can change the boiling point of water, the same principle is applied in pressure cookers and I believe the boiling point of water on Mt.Everest is 69 °C due to the decrease in pressure. PV=nRT is one of the most fundamental gas laws that helps show this (increases in pressure is directly proportional to an increase in temperature so long as all other perimeters are a constant).
0ElectricWizard 5 months ago
You can't look at strictly the point because 0 C is just too baffling to examine. You have to imagine it like a two way street. It's where rising temperatures make room for melting, cooling temperatures freeze, and there's an express lane for water vapor.
HangulMaster 6 months ago
Hot water freezes faster than cold water.
Bigminimus1 6 months ago
and that's why we use Celsius.....
DCdabest 6 months ago
This is stupid the answer is very close to 100C at standard pressure or 99.97C. Any physicist would tell you that is the answer. As a physics student it bothers me that a TV show that I normally like would go about and tell people lies about the boiling point of water.
RafnHeimisson 6 months ago
@RafnHeimiss Let me ask you a question. Outside the world of physics, who cares if water does not boil at 100C but rather 0.3C lower? I will answer that for you.. It is 0.
You are right of course. Water boils at 99.7C. So next time, for example, your mother says to boil water at 100C. Tell her that she is being stupid. It boils at 99.7C and it can't possibly go to 100C unless the van der waals forces that hold the hydrogen and oxygen ions together have been overcome, causing a change of state.
THX43110 6 months ago
@THX43110 You totally misunderstood me, I think the show is being stupid saying that 100C is not the right answer. Also it's quite possible that it would go a little above 100 or a little below, even at sea level, because the pressure around us varies on daily basis. When would someone ask someone else to boil water at 100C? Boiling usually does not need a thermometer to be recognized.
RafnHeimisson 6 months ago
Water freezes at the same temperature as Ice melts.
CrusstyJugglers 6 months ago
hang on, if 100 was the wrong answer, what's the correct answer? 0?
leredsock 6 months ago
you guys are going on about water? you should take a peek at chocolate.
leredsock 6 months ago
Water can boil at any temperature you like. It depends on the air pressure. In the vacuum of space, for example, your body temperature would cause your blood to boil off into space, whereas at the bottom of the oceans, liquid water exists near volcanic vents withut boiling at temperatures of more than 400C. You can boil a flask of water by holding it in your hand, if you have a vacuum pump handy (and I could come and do it on your show if you'd like to see it) Bill Dixon
tallbillbassman 6 months ago 2
@tallbillbassman but if the air pressure is significantly lower than atmospheric pressure, then technically, its not boiling...the pressure is just lower, so its just...depressurizing...
yingyang70 6 months ago
I always thought that 99.9% of youtube users who comment are the saddest most pathetic people on the planet.... till I started watching QI clips and realised it's 99.8% - you boffins lol. knowledge is power
TheWestSux 6 months ago
This has been flagged as spam show
@missdancathon Thanks, I couldn't fit that in because of the character cap :P (heh-heh, couldn't fit it in)
Mieljean 6 months ago
Comment removed
Mieljean 6 months ago
Triple point is a point at given temperature AND pressure at which three phases coexist. For the triple point of water (gas/liquid/solid) this temperature and pressure are approximately 0 °C and 611,73 Pa (0,006 atm). Not to mention the fact that water has multiple triple points.
And the babbling about 0 °C not being the point at which water freezes is also rubbish, because it IS exactly that. It's the temperature (at 1 atm.) at which the liquid and regular ice can coexist. (goes both ways)
Mieljean 6 months ago 64
@Mieljean Isn't it like ice's temperature will rise until it gets to 0c, stay at 0 til it's in a liquid state, go up to 100c, stay at that til it's steam, then go up from there, and vice versa?
SystelCyrus 5 months ago
@SystelCyrus That would be the shorter version of the point I was trying to make, yes :)
Mieljean 5 months ago
@Mieljean Science RULES.
SystelCyrus 5 months ago
@Mieljean
Show off.
AlbieStarr 5 months ago
@Mieljean so
seanybo777 5 months ago
@Mieljean everything is relative, my friend ;)
tavi921 4 months ago in playlist QI
@Mieljean i the triple point of water was rubbish, but i think originally it was meant to be aimed at all the different units in use. if he'd originally said "100°C" instead of just "100°" he'd got the point.
LordLuKha 2 months ago
anyone notice that if they did it the other way around, they'd be more or less the same number?
rockerlkj 6 months ago
No one in the UK uses farenheit it's always celcius.
360cbh 7 months ago
@360cbh Well, we don't. I do exactly what Stephen said we do, which is use fahrenheit when it's hot and celsius when it's cold.
itsazy 6 months ago
@itsazy Most people dont. The weather is reported in celcius, most people just use celcius.
360cbh 6 months ago
Actually Dara the triple point of water is : 0.6117
jamsbruno1 7 months ago
All very academic.
I have gradually come to use Celcius having moved from Farenheit to centigrade over some 40 years!
So why do we talk of miles per gallon when petrol is sold by the litre? And what with that 0.9P on the end of every petrol price, surely its not legal.
fivish 7 months ago
HE GOT POINTS FOR THAT??!!?
I'm writing in
LoopMarine 7 months ago
@LoopMarine make it a strongly worded letter :-)
PDodds77 7 months ago
Hang on Dara, triple point is 0.01 right?
FloormanUK 7 months ago 104
@FloormanUK it was actually changed after dara left school, so he remembers it correctly, it's just changed since
gnackattack 7 months ago
@gnackattack
oh...really? So in the other episode he got points deducted for being out of date?
FloormanUK 7 months ago
@FloormanUK basically yeah - r7SOLBuy8HI is the video where it happens
gnackattack 7 months ago
@FloormanUK GET A GRIP
sam8110 6 months ago
@sam8110
That's a bit strong isn't it?
FloormanUK 6 months ago
@FloormanUK It's very annoying when people correct ridiculous things like that. Its tedious. It's a comedy show.
sam8110 6 months ago
@sam8110
If its so annoying then why are you having a go at me? Surely you could've saved yourself the time (and obviously the stress) of telling me not to correct something if its so annoying?
FloormanUK 6 months ago
@FloormanUK get a grip took all of 10 seconds to write and didn't stress me out in the slightest... not sure why you think it would. If you don't want a reply, don't comment?
sam8110 6 months ago
@sam8110
Who said I was asking for a reply? Look at all of the others here who have said the same thing....
FloormanUK 6 months ago
@FloormanUK
As he said in a later episode, he was rounding down :)
Swingking1977 5 months ago
@FloormanUK No? You missed what he meant.
MrRufusthethief 5 months ago
@MrRufusthethief
What are you on about?
FloormanUK 5 months ago
i thought triple point of water is 0.01 degrees celsius
spit0flip 7 months ago
@spit0flip You are correct in stating that, and QI realises it a little later on. The next time Dara is on (I forget which episode), he loses those points and gets a retrospective forfeit.
merdehappens 7 months ago
Fun fact: in Sweden water boils at 60c. They are kinda stupid that way.
GodMaker925 8 months ago
2 minute clip and a fucking 20 second commercial.
Greedy pricks.
TheBigEase 8 months ago 2
@TheBigEase Firefox with AdBlockPlus.
I have not seen a commercial on YouTube in years.
NamesForDogs 8 months ago
@NamesForDogs thanks. Dutifully doing it's work right now ;)
TheBigEase 8 months ago
@TheBigEase if it were me i would have atleast 40 seconds of commercial.
MrVonFrom 8 months ago
Regarding the debate about Celsius versus Fahrenheit - it's a case of "horses for courses". If you've grown up using one system, you're more likely to believe it's superior to the other. Fahrenheit is more granular and was specifically developed to reduce decimals; on the other hand Celsius sounds more logical for those familiar with metric, as the reference points (based on one of the most abundant molecules on earth) are 0 and 100. Incidentally F dates from 1724 and C from 1744.
mittfh 8 months ago
in kelvin or celcius??? or fahrenheit
bestyboi90 8 months ago
@bestyboi90 They're referring to celsius.
metallidethN9ne 8 months ago
If I get a UTube Ad I click away...
tentheagle 8 months ago
love Stephen Fry - "oh very good, you MUST have some points for that and THIS round of applause..."
*APPLAUSE*
Kinlochbervie50 8 months ago
... and then we found out he was wrong.
Leviskardsen 8 months ago
This has been flagged as spam show
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Copy and paste to all Eminem videos and all music videos let's get this noticed quickly!
LET'S GET THIS NOTICED
EMINEM OR DIE.
Sboy200 9 months ago
I had no idea the British used Fahrenheit at all! :O The things you learn on this show are fabulous... :D
PianoWizzy 9 months ago
@PianoWizzy we dont really its just what news papers use to make us think its hotter than it is.... also outside swimming pools
bradfordbulls4lyf 9 months ago
@PianoWizzy we barely do
Elltrixer 8 months ago
@PianoWizzy we don't. at all. it was a joke (not a very good one)
machete97 8 months ago
sooo, whats the answer? he never actually answers the question?
BrunetteSaxophone2 9 months ago
is there a diferance in points lost/receved between simply getting a wrong anwser and get the wrong awnser that makes the lights flash
celestialsalamander 9 months ago
@celestialsalamander The flashing lights means that the answer was both obvious and wrong which is when they deduct points . You don't lose points for answers that are just wrong .
Gavinificationness 9 months ago
in Denver it boils at 94C cause we are at about .8 atm
kjko 9 months ago
I didn't know British people used Fahrenheit at all (even though its the superior system) why do I have to keep converting Celsius for you people?
giponygirl 9 months ago
@giponygirl you dont douchebad we use both
catfacetheoriginal 9 months ago
@catfacetheoriginal yes i do? I wasn't speaking like i might have to do it, I was speaking like I do do it. People always ask me what the temperature is in fahrenheit. my ex was british and I had to translate 100F like 40 times. fahrenheit is the superior one. its more accurate and less ambiguous without involving multiple decimal places, so idk why you would call me a douchebad.
giponygirl 9 months ago
@giponygirl I think it depends on he age of the person. Britain went metric in the 70's. I grow up about that time and so I am more comfortable using Celsius. Older people are stuck with Fahrenheit.
psfree40b 8 months ago
@psfree40b Not really. Britain went semi-metric and now has some weird hybrid system of measurement depending on what it is you're measuring.
limetang 7 months ago 2
@limetang My point was with Stephen Fry saying that we (Brits) use Celsius for the cold and Fahrenheit for hot days, but I don't. The reason being that he is older than me. When I went through school it was Celsius and centimetres. For him, Fahrenheit and inches. It's the same in factories, my first job was in a place that started in the 50's, everything was inches. Now the newer ones I work in, it's all millimetres.
psfree40b 7 months ago
@psfree40b I think it generaly depends on mood rather than age alone. I grew up learning celsius and meters/km etc. but generaly use hybrids of measuring things in feet, meters or miles depending on length. I think his point is valid that people use those temperatures as fahrenheit sounds more impressive when it's hot, and celsius when it's cold.
SuperMatureUsername 7 months ago
@giponygirl Lol Fahrenheit is superior. You obviously aren't a scientist. The SI system is far superior to the imperial scale, it is much easier to do complex calculations with SI. Sure, expressing idioms and the weather is more often done in F in the US, but for everything else, SI is better. Also, Fahrenheit is a pretty arbitrary scale... 0 degrees F is "A cold winter night." lol wut. Why do you think all scientists and engineers use Celsius (and Kelvin)? It's better.
tanmaniac 9 months ago
@tanmaniac youre obviously an idiot. celsius is not part of the SI system. kelvin only uses celsius because celsius was the more popular degree scale. fahrenheit is more precise. just because its used by europe doesn't make it SI. idiot. scientists use celsius because its more popular.
theres a little jingle insulting the stupidity of celsius. 0's freezing 10 is not 20's normal 30's hot.
giponygirl 9 months ago
@giponygirl Oh god I looked back at what I said this morning and realized how retarded I was. Of course Celsius isn't SI, Kelvin is. Sorry, I was recovering from staying up for 60 straight hours working on Calculus and chem and APUSH homework (and going to school). Sincerest apologies, I'm usually not so stupid.
tanmaniac 9 months ago
@tanmaniac You're sure you don't want to suck his dick as a punishment?
Saruman38 9 months ago
@giponygirl "just because its used by europe doesn't make it".
It's actually used by the entire world except the United States. Just like the metric system, actually. But an uneducated and xenophobic American like you couldn't know that.
Saruman38 9 months ago
@Saruman38 that quote is taken out of context. i was calling him xenophobic by saying that all american systems of measurement are automatically inferior to those used by the majority. i did know that it's used by the majority of the world. it isn't the entire world. i believe burma used fahrenheit still.
why do you have to be a dick? seriously? are you incapable of just saying why you disagree instead of a huge list of unsubstantiated insults? be a gentleman.
giponygirl 8 months ago
@giponygirl Fahrenheit is inferior, as are all non decimalised units of measurement A degree on the Fahrenheit scale is 1⁄180 of the interval between the freezing point and the boiling point. and it takes the body temperature of a horse as a point of reference 96f(this is stupid). water is one of the most abundant and fundamental recognizable compounds in the universe, defining its triple point as zero, is genius kelvin represents a better option than either but Fahrenheit is miles behind both.
1qaz6yhn5tgb 8 months ago
@1qaz6yhn5tgb Kelvin is based on Celsius. Rankine is based on Fahrenheit. The only reason Kelvin was chosen was because Celsius was already the most popular. We aren't talking about scientific scales, I agree that one that starts at absolute zero makes more sense. He was attempting to make a medical scale with the human body as 100, but he failed and didn't try to fix it. His zero was based on the coldest it could be observed to be outside. What it's based on is irrelevant, though.
giponygirl 8 months ago
@1qaz6yhn5tgb Both Celsius and Fahrenheit can be said to be decimal, I don't understand why you think Celsius is more decimal than Fahrenheit. You don't have kilodegrees, and even if you did, it could be applied the same to Fahrenheit. Water is very abundant, that's true. What you don't seem to understand is boiling points and freezing points are not static. Have you taken chemistry? It is all based on the pressure as well as the temperature, among other things.
Celsius has a lower resolution.
giponygirl 8 months ago
@1qaz6yhn5tgb A degree on the Celsius scale can be said to be 1/101(+/-) of the interval between freezing and boiling. As we've already established, they change, so your cute little 0 100 thing is irrelevant. Besides, why the freezing and boiling? What makes those special? Because of the larger number of degrees between freezing and boiling, you can see that Fahrenheit has a higher "resolution" of temperature and is therefore more accurate. Fun Fact: Celsius started with 100 being freezing.
giponygirl 8 months ago
@1qaz6yhn5tgb Water is really not that fundamental. I would say carbon is more life-y. Why don't we have a temperature scale with carbon freezing under 1atm at 0 and boiling under 1atm at 100.
Another thing, 100 is not decimalized. its centimalized. Why doesn't Celsius make 0 freezing and 10 boiling? Would that be as good? You can decimalize it by saying "it's 3.56 degrees, I'm so hot!" lol
darris321 8 months ago
@darris321 read the scifi novel "Calculating God" by Robert Sawyer. Many excellent conversations are found therein about the nature of life, including one that focuses on the uniqueness of WATER.
simonjeste 8 months ago
@simonjeste i'm sorry, but it seems a little incredulous that you tell me to read a scifi novel for science lol
giponygirl 8 months ago
@giponygirl sometimes a SciFi WRITER is also knowledgeable about Science.
Do you think nothing science-wise can be learned from Carl Sagan's novel "Contact"? (very different from the movie, btw).
Also Robert J Sawyer (author of Calculating God) is usually very good at learning about accurate science to include in his books. In CG the discussion about water is something unique, I'd recommend it just as food for thought. All I'm saying :rolleyes:
simonjeste 6 months ago
@Saruman38 also one more. one reason fahrenheit is good (besides the others i've listed) is because the creator didn't go in with a "choice of the boiling and freezing point of water" why water? what makes water so fantastic? why do you celsius defenders love water points so much? why not sodium? i'm sure one of the elements conforms more regularly to fahrenheit, does that mean fahrenheit is superior? no, that's a preposterous thing to defend. 32 and 212 are easy enough numbers also.
giponygirl 8 months ago
@giponygirl I don't really see why Farhenheit is the superior system. It's absolutely illogical in its choice of freezing and boiling points. But I guess you're just a retarded, self-centered, arrogant, ignorant and slightly xenophobic American. Oh, and by the way, why does 95% of the world has to keep converting metric (which is unquestionably superior to your stupid US measurements) for you yankees?
Saruman38 9 months ago
@Saruman38 freezing and boiling points is the ONLY thing that celsius has going for it. btw, that is ONLY on water and ONLY under 1 atm of pressure. l'm obviously not being that arrogant because i openly admit that the metric system kicks the shit out of the imperial system. so how about you quit being a douche. is it really that hard to remember 2 numbers? do you have so little faith in humanity that you think its difficult to remember 32 and 212? celsius is NOOOOT metric, retard.
giponygirl 8 months ago
@Saruman38 fahrenheit is the superior system because it is the more precise system. Celsius was invented with the intention of having water freeze at 0 and boil at 100. in my opinion, that is a horrible reason to say it is superior because its not even consistent. fahrenheit has more degrees between the freezing and boiling of water- the imperial system is bad because you have to use a lot of decimals for precision that is the exact same thing with celsius. in fahrenheit, that doesn't happen.
giponygirl 8 months ago
What was the original question? Was it: "at what temperature does water boil", or "at what temperature did Dr. Celsius decide water boiled"? If it's the first question, as indicated by the clip title, it was never properly answered.
boastreef 9 months ago
what an idiot dara is. everyone knows it's not exactly zero.
utdfortreble 9 months ago
@utdfortreble Maybe because we all saw the episode where we're told it's 0.01.
Roan99 9 months ago
Has anyone else noticed the spirals on the walls are Fibonacci Spirals?
iTmcb 9 months ago 90
@iTmcb and the golden ratio is also on the wall (1+root5)/2 although you can't really see it on the quality here
speeron 9 months ago
@iTmcb Every minute of the day.
RabdonFilms 8 months ago
@iTmcb Yeah it's pretty obvious.
Meehuuu 7 months ago
@iTmcb Wow man, did you notice the hair on Dara O'Briain's head??
luhario 7 months ago
He didn't say at which pressure...
Samuelwhatshisface 10 months ago 2
@Samuelwhatshisface +1 for science
AnonymousComrade 9 months ago
If u talk to some people in the usa and you ask them... what currency is used in the uk they'd reply and answer:.. what's a uk?
No wonder they always keep asking me if i am german while i am from the Netherlands.
lahmzak 10 months ago
I didn't know that British used both Fahrenheit and Celsius. Is that true? I kind of like that because Fahrenheit I think is more useful for describing weather. 28 just sounds unimpressive.
Setzer 10 months ago
@Setzer yes but centigrade is much more common. Farenheight is only really used in newspaper reports for very high temperatures in summer. You also sometimes (very rarely) hear of "degrees of frost" which is for cold temperatures and is the number of degrees farenheight below freezing (32 F). ie 26 F would be 6 degrees of frost.
ELeeming 10 months ago
@Setzer it's less true these days but 10 years ago it was very commonplace and most people over 45 still use both. Younger generation use Celsius exclusively.
GestaltO 9 months ago
@Setzer i'm not like that, i don't use fahrenheit at all.. but then again i'm only 21 and ive grew up with metric all my life
harper16 9 months ago
This comment has received too many negative votes show
i dont understand the point of this show. its just smug british people sitting in a semicircle looking at the really smug guy, saying well known, basic facts.
stevendurr 10 months ago
@stevendurr
On the contrary, this show adresses what many assume to be well known basic facts and corrects them. Also, the whole point of it is not to be all "Oh, we're smarter than the rest". It's a comedy show, which happens to also be insightful. And if you fail to understand that it's your loss.
EnigmaDrath 10 months ago 4
@stevendurr They are not basic facts at all, but the correction of commom misconceptions. Also, the panel is made up of British comediens - not smug British people. I have no idea where you get 'smug' from watching this - obviously there is a bit of a complex there! If you do not like British people then you probably should not watch a posting by the BBC.
sarauk2sf 10 months ago
@stevendurr Congratulations on your trolling
DarkZholt 9 months ago
@stevendurr Retard.
nylecrane2k7 9 months ago
the answer is it varies with atmospheric pressure. =]
firestone334 10 months ago 143
@firestone334 Hehe
SuperZerodotcom 10 months ago
@firestone334 that's y i always get no mark...
villainy07 9 months ago
@firestone334 I thought for a moment that you meant the triple point varied, and was about to jump down your throat, but then I remembered that that wasn't really the topic.
IoEstasCedonta 8 months ago
@firestone334 A bit slow on the uptake are we...?
pacmandem 8 months ago
@firestone334 and salinity
gbushimprov 6 months ago
wait so what was the answer??
EnigmaComposer 10 months ago
Specific heat capacity of liquid water is 4.18 KJ - that is basically all you need to know for water (know that and you are set for life)
LiamDaLemon 11 months ago
They're right but only partially. Water only boils at 100c at nominal atmospheric pressure at sea level (1013 millibars). On a mountain top it boils below 100c as the ambient pressure is lower. In a car engine it boils above 100c as the cooling system pressure is higher (the cooling system is pressurized precisely to prevent boiling, even up to 110c or so). That's why a cup of tea made on a beach tastes better than on Snowdon, except that it doesn't because on Snowdon you appreciate it more!
1RadNomad 11 months ago
I live in Britain and can confirm we do use F in summer and C in winter.
eXPerienceyeah 11 months ago
alan seems like an older version of ben from outnumbered!
milllybob 1 year ago
@milllybob I thought the exact same thing the other day! :)
BlueNoseAdam 11 months ago
Stephen is wrong, water freezes and melts at the same exact temperature. If you keep water at perfectly at that point the molecules will constantly be shifting.
porgy29 1 year ago
@porgy29 "Stephen is wrong, water freezes and melts at the same exact temperature."
.
It is more accurate to say ice melts at zero than to say water freezes.
.
Water can freeze at zero but it does not consistently form visible crystals at that temperature. Water can be supercooled to well below zero and remain liquid. So the liquid appearance is no sure indication of it's temperature.
.
Ice however, will always melt at zero degrees, which makes melting the more accurate indicator.
Noisegator 11 months ago
@Noisegator How dare you reply to a YouTube post with actual information?? If you let on about nucleation sites for freezing, you might as well spoil all of the magic beer freezing videos! Next you will be blabbing about super-heated water and "bumping" or "explosive boiling." Sheesh.
FinnMcRiangabra 9 months ago
When people try to compare the US to their country why do they always have to say things like "Asia", "UK", "EU" or the "Middle East". They never actually try to compare just their single country to our single country, they always have to involve other countries.. Why is that?..
SmokeyCough 1 year ago
@SmokeyCough geography
stuartmcdonald411 1 year ago
@SmokeyCough the uk is in europe
hermione1998 1 year ago
@hermione1998 That's fine, "KiNPiN1835" is the one that wrote "UK>US" as if it's one nation competing against one nation.
SmokeyCough 1 year ago
@SmokeyCough It might be to do with Geography but come to think of it,the US has all those Nations in the country.A lot of the people in the US cannot be 'pure blood Californians'&all that because the natives are the Native Americans/'Red Indians'.The US has always been compared with countries and always will do.People can be brought up to say one country/nation is better. It's just preference. And this is coming from a very proud British person. :). It's mainly got to do with history and geo.
buffynum1 1 year ago
LIAR
Triple point of water is 0.01.
RooAndHerbs 1 year ago 53
@RooAndHerbs they correct it on the next episode the clip is on here somwhere
rayhs1984 11 months ago
@RooAndHerbs they did a retraction in a later season! lol///
shomitb