All of these Surrey NanoSystems videos about Vantablack are quite interesting:
https://www.youtube.com/channel/UCcstydRR1-x4hLyFcqigu4w/videos

(they dip it in water and liquid nitrogen too)

Please don't say it gives off Nitrogen in the same sentence where it gives off Arsenic and Sulfur. Makes it sound like Nitrogen is bad for you.

The air everyone reading this is breathing -who isn't on bottled oxygen- is over 75% Nitrogen. It is by far the most plentiful gas on the planet. It's why filling your tires with Nitrogen is more or less a gimmick.

Plus the barrel of liquid Nitrogen you have to carry around is a little inconvenient.

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@Fairbs

Doesn't seem to be the case. SFOguy posted this in the description:

"And here are hockey pucks being subjected to liquid nitrogen.
Good grief, what are they made of?"

https://www.youtube.com/watch?v=mVBBdkM6-7c

So yeah, probably defective but also definitely crazy power in the shots that broke them.

Of course we all have liquid nitrogen lying around.

It's what my dad kept the bull semen in.

We used it for 'science' experiments...

OMG!!! Drinking liquid nitrogen?!?! *WTF people!?! *EIA

My brother's 16th birthday party was really close to that. He heated the pool to over 100 deg and put 50lbs of dry ice in it. Lucky for him, the fog wasn't as thick as in this video and no one had to be rescued, but the entire back yard was about 2 ft thick in CO2 fog and covered with drunken teenagers rocking out to Thriller (which had just come out at the time).

Most of those scientific equipment doesn't have list prices on web stores. I would guess $200k+ for new (some are over $1M), depending on the scannable area and resolution. There have been "desktop" models released recently, but no idea how much they cost (still likely more than $50k)

Plus most home users probably would be difficult to get liquid nitrogen and liquid hydrogen delivered (there's a certification process).

I don't think I want to be the one to test that theory, I'd be worried about what would happen after the initial phase... it is quite true though that the two gases need to be in a certain range of ratios to explode. Since earth has a nitrogen/oxygen atmosphere we normally talk about the gas concentration in air, but in the reverse situation you also need a certain percentage of oxygen like your chem teacher said.

There has been talk of coal mining in an oxygen free environment, with the workers wearing space suits, see this Deseret News article from 1970 for instance - http://goo.gl/PEZKp8

I didn't find any evidence that the idea got past feasibility testing.

I like how the ice caused the liquid nitrogen around it to boil spontaneously.

You really don't need to keep your freezer that cold. It makes your ice cream go too hard.

Vacuum-Cooled Nitrogen Snow.

Sounds like a 90s grunge band.

just an FYI, there's a restaurant in LA (don't remember the name) that makes fresh alcoholic otterpops right in front of you with a pitcher of liquid nitrogen. so that ship sailed long ago i'm afraid =D

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I call dibs on the first cherry flavored nitrogen snow cone!

Normal U-Locks with accessible Key holes are way to easy to break. Just spray lots of liquid air into the keyhole - this freezes the lock mechanism and one-two hit with a hammer and it falls apart instantly.
(some people also use liquid Nitrogen)

This design protects against that.