Liquid Air - Science Theater 31

[oribitton1]

nice

[Lachieh923]

completely opposite to my penis, when its cold it goes soft and when its hot it goes hard

[MrMrgta4000]

why isnt the liquid nitrogen turning back to gas ,, i think its 20 C around it ,, and it need much less tempretior to turn to gas ???

please answer my question and thanks .

(srry for my bad English) .

[sciencetheater]

@MrMrgta4000 Your English is fine. The liquid nitrogen IS turning into a gas... it just isn't happening all at once. (It takes time for an ice cube to melt, and it takes time for the liquid nitrogen to evaporate or boil off...) Every time I put something into the liquid nitrogen to cool off, a portion of the liquid nitrogen boils off and becomes air again...

[MrMrgta4000]

@sciencetheater oh .. thank you very much :D !

[dreammaker182]

...Hand Gestures...

[62564narah]

omg,with ur videos...i actually find physics and chemistry interesting,ive been studying this subjects for 2 years,and i hv not find even a second this concepts to be interesting! thx to u i might just get an A for my exam this november..! :)

[sciencetheater]

@62564narah Thanks for the nice comments.

[EngNaruSuks]

@sciencetheater

Thanks for the nice video!

[sciencetheater]

@62564narah Thanks for the nice comments.

[DoNotuseEbid]

Do you need an expensive machine to freeze gas to -217? I want to turn hydrogen to liquid hydrogen.

[sciencetheater]

@DoNotuseEbid I don't think it's too cheap... liquid nitrogen isn't too bad, and dry ice (solid CO2) is doable, but I'm not so sure about going much farther easily...

[sciencetheater]

Not quite. You can still see my pant cuffs just fine.

I believe that is the glove you see landing on the floor. It is extremely loose and fell off as I threw the ball onto the floor...

[johanadler]

@6:40, did you drop your trousers, or what?

[DJkkrown]

BORRRINGG. THIS IS LIKE 3rd GRADE SCIENCE

[omgcowshaveudders]

Shouldn't you be wearing gloves?

[sciencetheater]

Liquid nitrogen isn't toxic, just very cold. Most of the time I'm quite safe, and if anything spills I simply need to get away from the cold liquid. Gloves could actually be a bizarre hazard, if some liquid nitrogen were to pour into the gloves, I'd need to take them off very fast...

You have a good point, and some gloves would be handy, but as I'm not getting anywhere near the liquid I don't need them... (note the gloves when I ring the bell.)

I probably should be wearing goggles. :(

[Kalamando]

And how the heck do you supposedly GET liquid nitrogen, like i know dry ice is sold in some stores, ( Not for minors of course ) but Liquid Nitrogen, Tricky.

[sciencetheater]

Liquid nitrogen is fairly easy to obtain for research scientists. Not so easy (or even recommended) for others. It is cheap though. Don't know current prices but it used to be about as cheap as milk.

[TheLaurencekid]

if your hand is imersed in liquid nitrogen you hnd will sieze in the joints and the bones would crack and your blood will freez and that can kill you because it forms ice crystals in your blood

[sciencetheater]

true, if you were to leave it in liquid nitrogen. However, if the time exposed to the nitrogen is brief, there will be little or no exchange of heat. (Like waving your finger through a candle flame, do it quickly and you won't get burned, hold your finger there and it will burn.)

DO NOT TRY ANY OF THIS AT HOME! :)

[kaka0o0o]

The rubber is too breakable

[sekky123]

what would happen if you put your hand in the liqiud nitrogen. would you get an instant frost bite?

[sciencetheater]

DO NOT TRY THIS AT HOME (OR ANYWHERE ELSE!) However, if you put your hand in the liquid nitrogen and hold it there, it would begin to freeze and get "instant" frost bite...

However, for a very brief instant, you would boil the nitrogen around your hand, making a little nitrogen "air pocket" in the nitrogen liquid which would protect your hand.... for only a tiny bit of time... I don't recommend it, though... too easy to mess up and get frostbite or worse...

[redslownight]

where can i buy sulfur hexoflouride?

I WANA DEEP VOICE!!!!

[spincer93]

you got to much free time

[sciencetheater]

Excellent! I didn't know that. Thanks!

[sciencetheater]

No problem.  Glad you know your periodic table!

(If I used just "Pb", then the non-chemists might not know... so I had to use Lead...)

[Merdam9]

What is lead?? (not english native)

[sciencetheater]

Lead, element abbreviation "Pb". Used to be used in pencils instead of graphite. But it causes brain damage so we don't use it in paint (or pencils) anymore...

[Merdam9]

You could just write Pb, and I would understand. Thanks anyway.

[DrewZZK]

I'm learning!

[vindictii]

Nice shoes.

[PengunaFilms]

fun!

[afranciola]

i hope u washed ur hands after touching all that lead.

[zeesham13]

cool stuff

[electronifilm]

literaly

[electronifilm]

literaly

[jk7791]

go dr. carlson

[optiranium]

out of safety, wear of a ring. But excellent video

[th55]

Fun stuff