What is fire?

[jesuistahmid]

awesome... working on an assignment on bbody radiation right now!

[MPaquinJr]

Who says its paper?

[marina5867]

it's viharts's brother!!!!!!!

[cellmate100]

BUT WAIT! u cant light a fire in space, there's no oxygen ??????

[iDiOtShOwBaG]

@cellmate100 there's oxygen in a space ship :P

[aqualieutenant]

@cellmate100 he said zero G... not space

[analyseforu]

@aqualieutenant *g

[GnlMachoman]

@cellmate100 inside the spaceship maybe??

[muk2223]

but What is love?

[pwnstarispro]

can't stop watching... seriously I am learning so much (or so i believe)

[Artsiest]

Pause at 00:58 - it is just me, or does that look like a woman's lower end infested with crabs and on her period.

[MadaraUchiha28]

@Artsiest at first i couldn't see it..but then....

[AWileydogMinecraft]

@Artsiest It's just you.

[misterkevinoh]

@Artsiest ... ew dude...

[mrja346]

@Artsiest I Think its just u

[mojomaster01]

@Artsiest Well thanks, cannot unsee.

[Cowetabandpride]

For some reason this reminds me of the good old show used to watch "Blues Clues"!

[DarknessssenkraD]

and what is the speed of fire? to travel from a point to another?

[RomanNumural9]

what state is fire in? is it considered a gas or a plasma?

[RBuckminsterFuller]

@RomanNumural9 Gas.

[lilrayman97]

@RBuckminsterFuller sorry buddy its actually a plasma

[RBuckminsterFuller]

@lilrayman97 It wouldn't turn into a plasma unless it was an extremely hot flame, so it's definitely a gas when we see it in most everyday situations. The gas is just undergoing a very quick chemical reaction. It would also contain particles of soot which would be in the solid state.

[jruler93]

Well, there's no such thing as zero gravity, because there's always some gravity, even in outer space, the same applies to matter or "nothing" as to gravity and zero gravity.

[xunaijiajia]

Xixi

[xunaijiajia]

Loke

[Demonicalex117]

well i think you cant light a match in the space because there is no air in space...

[goldendragonchild]

@Demonicalex117

You can have a pressurized space craft.

[goldendragonchild]

@Demonicalex117

You can have a pressurized craft in space, and thus light a flame in it.

[halfMAKOL]

so hot air rises because gravity pulls down? that makes perfect sense . . .

[aluisious]

@halfMAKOL Yeah I've been watching these vids and they're all pretty awful at explaining easily explained phenomena that way.

Hot air rises because it's not as dense as cool air, so it's buoyant. It floats. Doesn't even take longer than his explanation.

[KevinC0115]

how awesome would it be to light a match in 0 grav?

[charliesbass]

Ironic how this was uploaded on September 11th...

[sparkey67890]

all your videos are wrong god made allllll the things.

[TheUlsfark]

Wait, It's impossible to light a match in space..

[aluisious]

@TheUlsfark Well it's a good thing space has nothing to do with zero gravity, isn't it?

[Jokerk1d]

but i dont get why the shape of the flame is the way it is. Wouldnt gravity make the flame burn downwards or something. Im confused.

[jiraya350]

@Jokerk1d Hot air rises and colder air stays lower because cold air is heavier.

The gasses in the flame are obviously on the lighter side so they don't burn downward.

[Levon9404]

There is lot more to it than just chemistry & physics in the fire.

[copythatagentk]

Hmm, now I finally understand fire.

Thank You.

ps that was NOT sarcastic

[nmorihisa]

that edward cullen sparkles and doesn't glow cool

[Classifiedmember1]

you said "if you were to light a match in space it would just spread outward like a balloon". Doesn't fire need oxygen to burn???

[red0death1]

@Classifiedmember1 you can have oxygen in zero gravity aka space shuttle....

[Cinderhearth]

@Classifiedmember1 He said zero gravity, not space... and he was talking about the fact that fire needed gravity and that was a comparison. He wasn't talking about oxygen.

[jefff42951]

I want to light a match on the international space station...

[TheMrjw7991]

Im just wondering but how long does it take you to draw for a episode?

[MrMinhoca42]

WHAT IS FIRE?! BABY DONT BURN ME! DONT BURN ME !! NO MORE

[theflyingass]

Light a match in the International Space Station....Boom, zero gravity fire.

[jxs1309]

You can still prove this without lighting a match in space (which isn't possible) , you can just light a match on Earth in a microgravity chamber or if there's a place on Earth where there is no gravity ... I guess ... :)

[MhmMhmGood11]

You can't light a flame in space bro.

NO ONE WILL EVER KNOW! kekeke

[gimkilo57]

DON'T LIGHT A MATCH IN SPACE!!! wait... no air... nevermind...

[DEVILMATE1996]

hey that was 29 seconds overtime,gimme my time back now.

[MrPeeepe]

You could buy a white board instead of using so many pieces of paper. Think about the planet! ;)

[dduble07]

@MrPeeepe fuck you cockwhore!

[marina5867]

@MrPeeepe or ideapaint!!!

[analyseforu]

@MrPeeepe paper is biodegradable, you can reuse it.

[GnarlyNewEngland]

@MrPeeepe Just think about the amount of cleaner he would use getting it nice and white again!

[DracoMhuuh]

Is it normal I want to lit a fire in space right now? xD

[IceMetalPunk]

@DracoMhuuh I do, too, Draco. I do, too.

[2deebeez]

@DracoMhuuh Too cold, no air.

[DracoMhuuh]

@2deebeez Thank you Captain Obvious

[HSAdestroy]

As much as i admire these videos trying to make physics acessible, the real fun of physics is understanding it, not explaining it away with terms like "thats quantum mechanics" :p

[covu08]

and i also cant believe there was a fight over something like this

[covu08]

but but but u cant light fire when outside of earth without oxygen and that hard to bring out and use to light.

[tic07096903]

@covu08 You simply light it in a space ship.

[EpicVideoViewer]

the comments are all way to long...

[carultch]

Shouldn't the rocket nozzle be inactive, if the rocket is a zero gravity environment?

[TheTellybean]

When electrons get excited, they reach a higher energy level, but due to some theorem, they are forced to go back to their ground (lower) energy level, which then releases energy, photons (light particles), and heat. The flame itself, which provides the light, consists of vaporized fuel, oxygen, carbon dioxide, carbon monoxide, water vapor, etc, which is a nonuniform solution of gases. "Plasma" is just a gas with highly charged particles (ie lightning). Fire is nowhere near that energy level

[Typho0n86]

@TheTellybean You delete you other comment, about being done with me ;P ive already wikied it and "the gases may become ionized to produce plasma.[2] Depending on the substances alight" I wouldnt say fire is that far from plasma. So fire is the movement of electrons to other shells states in a reaction and give off radiation when they go back to lower shell states... that wasnt so hard. And the video touched nowhere near that

[TheTellybean]

@Typho0n86 Ok man, i'm sorry for this fight. I never really wanted to start it. Probably shouldn't have said the "Your sixth grade science knowledge does not match physics" part.

[Typho0n86]

@TheTellybean Cheers, sorry too for the crap :D

[MegaloGater]

i apologize for this following comment of mine... seriously...

but when i saw the preview picture of this video it was the volcano you made with the lava running down on the sides

but...

at first sight i thought it would be the lower female body part with legs spread showing her tights and wearing nothung but fancy underwear and "she" is having her red monthly female body thingy witch causes some women to mentally behave different.

i really dunno why my brain made me think that way o_O

[MegaloGater]

@MegaloGater volcano i mentioned was at 0:58 in case it is not clear

[Typho0n86]

You never actually said what fire is, is it like a plasma or.... and if you light a match in zero g nothign will happen cause there is no oxygen :S

[TheTellybean]

@Typho0n86 Um, no. Fire is a not a plasma, it's just a mixture of gases. And zero gravity does not mean it doesn't have oxygen, because oxygen does not affect the attraction between two objects in the cosmos. Your sixth grade science knowledge does not match physics

[Typho0n86]

@TheTellybean Its a mixture of gases... almost whos in 6th grade???? if there was no gravity then how will the fuel get to the fire, fk idiot, the oxygen will be burnt around the fire and it will go out.

[Typho0n86]

@TheTellybean If anything it would be a chemical reaction of electrons with spesific gases, not just a mix of gases LOL and your calling me 6th grade ROFL ROFL ROFL... "fire is a mixture of gases" best thing i have ever heard... But this video doesnt exactly say what fire is. it says what it does, but not what it is

[TheTellybean]

@Typho0n86 Oh look, you had the words reaction, electrons, and gases on your little quiz today and managed to shove them all in one sh!tty sentence to a youtuber. Too bad "specific" wasn't on there. BTW, fire IS a mixture of gases, and also what it IS. You, on the other hand, poorly mentioned the reaction of combustion. You know, when a CxHx aqueous solution is added to oxygen, which then yields carbon dioxide and, sometimes, H20? I will allow you to reply to this once, but don't bother me again

[Typho0n86]

@TheTellybean Air is a fucking mixture of gases, and air is not fire. It must be a reaction of the gases/materials into a plasma of sorts. But still no closer to know what fire is with ur description of mixed gases... Good one fking idiot describing air. So fuck off cunt i dont want a fucking reply form u.

[noahzuniga]

now i want to light a match in zero gravity

[thisiseliasmichael]

i swear i would have passed my science gcse exam if i watched this -_-

[hectorbector11]

If the fire burns outwards in zero gravity, then it would push away all oxygen in contact with the site of combustion, stopping the fire, correct?

[TheYodg]

Go in ALL THE DIRECTIONS!

[nosidevideos]

these vids suck! he doesn't explain a thing.. he talks fast cause fast talkers are full of sh*t

[dffdbhgjhg]

there was a flame from the rocket engine which indicates it's accelerating (F=a*m). therefore the flame should point backwards :P

[BeItalian4ever]

Love your videos.. So relaxing and informative. Please never stop making these!

[mahmooddr]

This guy knows his shit...

[TheGentleRapist]

This video is stupid

The most important factor in determining flame colour in hydrocarbon fires is oxygen supply

[GumpContender]

really like this skit

[ZoeyTheFelineFox]

lol i tolled my class all this stuff and they were staring at meh like wtf? X3 i love fire and art :P

[SheerBl1ss]

I was going to say fire looks that way cause of air differences :C

[1lAllanl1]

So Goku in super sayan is hot enough that he glows!!! :D

[Merc240x]

fire is the release of stored sun

[ambalicious]

@randomap

Zero gravity /= vacuum

You can have oxygen in a zero gravity environment like the space station

[vettefan73]

@BloodAngel707 yes, and as he said, a pure burning flame (is a hotter flame) and everything is burned off. as for a candle or a wood burning fire, its blue at the base where its purest but there's to much carbon in the flame to cause it to be pure so at the top its not a pure flame and you're seeing the carbon glow re watch from 0:17

[kebs007]

is there a video that have a fire in a zero gravity.

[randomap001]

@kebs007 thats impossible. fire needs oxygen to burn and theres little to no oxygen in zero gravity

[TheSicknessIsTheCure]

@randomap001 Zero gravity doesn't mean no oxygen... It means no gravity. You're thinking vacuum.

[101rocketmail]

I hope you recycle all those pieces of paper you draw on.

[cankat917]

@101rocketmail pretty sure that's a whiteboard but w/e

[nowiecoche]

@101rocketmail minutephysics, please, please do recycle.

[HeavensBurn]

@101rocketmail Maybe he has a huge erasable board o.o

[liam12347]

@101rocketmail It's a whiteboard.

[101rocketmail]

@liam12347 Who uses Crayola markers on whiteboard? You use Expo.

[legoman56781]

yeah were to coool to se us glow

agree

[marquezbayside]

i thought there was no oxygen in space. So a fire cannot exist without oxygen..

and if you do it in a confined space that has O2 like a spaceship the fire will spread everywhere

[dinamitemaster]

@marquezbayside He just said no gravity. Everything else is the same.

[wolgercon]

@marquezbayside but it would do so evenly ;)

[JeweledBeast]

You forgot to mention how the poor flame in microgravity goes out because it doesn't get enough oxygen.

[99Chemicals]

The link in the discription doen't work... for fire in microgravity

[sege08]

i think sheldon cooper made these videos

[RsB0aty]

@sege08 'Sheldon Cooper' is an undergraduate.

[Vildeung]

i don't get it, man..

[MrDarthhideous]

I didn't hear him say this... fire is plasma.

[77XBlade]

jesse eisenberg!!??

\

[02111986vineelreddy]

brilliant, the Crazy diagrams helped as well... :D

[HeyyLookItsAlex]

Why do flames only spread out a certain distance? Why do they not shoot into the sky forever?

[MrDarthhideous]

@HeyyLookItsAlex Gravity........ Weren't you listening? :P

[HeyyLookItsAlex]

@MrDarthhideous I understand that, but why doesn't the flame carry up forever? Why is it limited to a certain distance? I know the bigger the thing on fire, the higher the flame goes...but, why not go on forever?

[DraykonVokelda]

@HeyyLookItsAlex I may be totally wrong, but I imagine it eventually gets to the point where the density of of the air above is lower than the density of the flame, so gravity lets it hang there. Not to mention as the molecules cool down, the density of that particular bit of flame lowers, and thus it stops rising at an even lower point.

Again though, this is just going by what little I know on the subject, so don't quote me :P

[gentel916]

@DraykonVokelda i am thinking that its a circle = fixed size + gravity = triangle like flames

[MrDarthhideous]

@HeyyLookItsAlex Well, can you jump up forever? Why not? Gravity pulls you down, thats why. Also, there is less air/area of space up in the giher atmosphere, I imagine that has some effect.

[ThePsionicMatrixTM]

I develped a personal thesis, it's like if you want to learn don't argue, just learn the shit.

[A1wixo]

what is fires state of matter ?

[emostevo555]

@everythingman987 he means inside the space station or ship

[everythingman987]

You can't light a match in space. NO OXYGEN

[ThePsionicMatrixTM]

@everythingman987 when he said space he meant somewhere with no gravity :)

[everythingman987]

@ThePsionicMatrixTM ohhhh lol ;)

[oldinion]

Your spaceship is accelerating, or at least the engine seems to be on. Shouldn't the flame act as if being accelerated,like in a gravitational field. if you're burning it on an accelerating spacecraft?

[Leonomai]

You see a clue? Where? Let's get our handy dandy... notebook!

[JB0I2]

I like your drawings

[technicallyabsurd]

Light a match in space and the flame will smother itself

[KillEverybody321]

you sound like Jesse Eisenberg...

[crazzyyydumbperson]

i mean i didnt even search fr this vedio in paticular i just got it

[crazzyyydumbperson]

a few hrs befor waching this video i was thinking of the sam topic

thanks fr the ans to my questions

[tacoofskillage]

so if an astronaut lit a ciggarette in his space shuttle, he could destroy it?

[GamesSpartan]

So if I lit a match in Zero Gravity with Zero Neutons, I could blow up the universe! :D

[UzumakiNarutoKun96]

@GamesSpartan no it needs to set something on fire then. Also a match wont even be lit in the universe without the required gas.

[GamesSpartan]

@UzumakiNarutoKun96 Aww :(

[Cyphlix]

silly spaceman, theres no oxygen in space :P

[enlowmation]

We gotta take a match onto that ZeroG plane thing from Mythbusters...

[lazyboy616]

Cool

[panex1993]

ლ(ಠ益ಠლ) y there no zero gravity spot in the universe? ლ(ಠ益ಠლ)

[BEAVER7014]

Wait a minute....you said if you lit a fire in zero gravity that It would have no were to go but how does a fire light without oxygen because it feeds of of it so it's impossible to light therefore no fire in zero gravity.

[ejhott]

@BEAVER7014 actually he said that in zero gravity it would "spread outwards like a balloon."

Also remember that zero gravity is not the same thing as a vaccum. The space picture was just to try to make it simple to understand.

If it helps you with the logic just imagine you are in a giant (fireproof) baloon filled with our normal air in the dead of space (zero gravity). You could still light a candle, just the candle's flame would radiate outwards like a baloon rather than just go up.

[Jabbawocky007]

I thought the temperature was based on color (i.e. the red flames are cooler than the blue, because red emits a slower wavelength, thus the molecules are less excited by the heat.) Unless the reason that the blue fire is hotter is because it's more pure...hmm...

[JunkTide23]

Fire is hot. Nuff said.

[jumb0mumb0]

@JunkTide23

u fkn dip shit. nuff said

[marioman11171]

@JunkTide23 then what is heat?

[TheFearedDefecation]

Red vs Blue reference. Just saying.

[Jodar5]

0:58 looks...oh god...so wrong...

[mitchmountain1324]

your a hot drawer. hehe



[MisterKhmers]

Someone told me not to play with fire. I told them not to talk to pyromaniacs.

[HaphazardousSoda]

the background music reminds me of blues clues... :D

[Junhyung999]

how does ice glow. water to ice is a physical reaction. i didn't think light was made from a physical reaction.

[pupip55]

yeah i'm cool

[Encysted]

I thought these videos were so cool, still do, but then my physics teacher told me they were only the stepping stone into moderate-level physics... :(

[TheGamingRambos]

Gravity = attraction? Wouldn´t that spaceship attract the fire.. And would the person attract the fire? :D

[Ali695]

@TheGamingRambos No where nearly as much as an entire planet would.

[totesredic]

I like your voice.

[StubbeA]

Making be wonder about a question I've never asked myself before about something I see every day and then explaining it in relatively good detail in 1 1/2 minute... best subscribe button I've ever hit!

[ElectricEel17]

FIRE IS WHAT COMES OUTTA MY ASS AFTER EATING TOO MANY BURRITOS

[mitrieD]

Why do these simple videos always blow my mind?

[TheWoodhook]

@ThePlatoon4

Sorry i didnt see it since im on an ipod

[yukipham18]

Now I wanna be an astronaut just so I can go to some place with zero gravity then light a candle and see a roundly shaped fire

[PEFOBE007]

Is it the carbondioxide that emits the light?

[mimsandfaile]

I didn't know Jesse Eisenberg knew his physics...

[xxxxhermione]

You have a sexy voice.