I Don’t Know What This Video Proves But It Sure Is Cool (So to Speak) by Robert Farago | Apr 16, 2016 | 36 comments facebook twitter linkedin email comments Rusty Chains says: April 16, 2016 at 18:11 Not sure there is a point, but I would not be the guy dropping the glowing hot ball in the powder. Still cool to watch from the safety of this side of the camera! Reply Robert W. says: April 16, 2016 at 18:55 Well, honestly, you’re worrying about nothing. As long as you aren’t igniting a pile of gunpowder large enough that it can create it’s own compression inside the pile, this exact same thing happens; You get a flame and a lot of smoke. I wouldn’t go lighting off a 5 gal. Bucket of powder, but a couple ounces like this is “safe.” Reply mlee says: April 17, 2016 at 02:40 We did that once. My brother had a FFL for manufacturing amuntion. When he was no longer doing it and didn’t have an FFL and he was moving, we needed to dispose of a butt load of fairly old powder. So…..you light it of fire! That’s what brothers do. We just made a big pile of powder on the ground. I remember it made a huge fire with flames at least 15-20 feet high. That was really cool, for a very short time. It seems it lasted….oh, 15 seconds and was burned up. Reply meccastreisand says: April 17, 2016 at 10:31 What it does show is a little thing called “initiation energy” which every first year chemistry student knows is hugely important to getting chemical reactions, both endothermic and exothermic to happen as and when intended. This is showing what could happen if your ammo were cooled to ridiculously low temps. You could expect (among other things) for the powder to not light off either consistently or with the ferocity that you expected. Reply JJVP says: April 17, 2016 at 10:44 If you and your gun are at liquid N2 temperatures ( -321degF), whether or not your powder burns evenly or as fiercely as normal would be the least of your concerns. Reply Geoff PR says: April 17, 2016 at 20:38 I *highly* recommend NOT chilling the barrel to cryogenic temps before firing it. That barrel will be very brittle and may shatter like those really nasty ceramic grenades, into sharp shards. Howard says: April 16, 2016 at 18:16 I think it proves that someone has too much time on their hands. Reply Timmy! says: April 16, 2016 at 18:20 Man, that guy will drop his red hot balls in ANYTHING! Reply NoobyNoobyDoo says: April 16, 2016 at 18:25 To see what it proves, would be nice to see what happens minus the liquid nitrogen. Reply Geoff PR says: April 17, 2016 at 20:43 deleted Reply Vhyrus says: April 16, 2016 at 18:30 I’m not sure the LN2 actually contributed to the final reaction. Maybe it slowed it down a bit. Reply mlee says: April 17, 2016 at 02:46 I suspect you are right in that it really had very little effect. Reply twency says: April 17, 2016 at 16:33 I’m pretty sure the whole pan would have ignited absent the nitrogen. Reply Geoff PR says: April 17, 2016 at 20:46 “I’m not sure the LN2 actually contributed to the final reaction. Maybe it slowed it down a bit.” The unintended consequence of chilling the powder cold will be condensation soaking into the powder, likely slowing it down like damp gunpowder would… Reply Joseph Quixote says: April 16, 2016 at 18:32 In a way it proves that gunpowder is extremely reliable. Even at crazy cold temps. Reply Frank Masotti says: April 16, 2016 at 18:38 All it did was to render the gun powder useless. Reply Esemwy says: April 16, 2016 at 18:58 If he’d just dropped the glowing orb into the liquid nitrogen it would have been much more exciting, and the video probably would have ended very abruptly. Reply Jeff the Griz says: April 16, 2016 at 19:55 Someone does engine coolant and it was interesting. Search Youtube for RHNB Reply Hal J. says: April 16, 2016 at 21:34 Actually…..not so much. Reply stevor says: April 16, 2016 at 19:46 it proves that some people have liquid nitrogen and can’t figure out what to do with it Reply Dr Brainwash says: April 16, 2016 at 19:59 Hey where can you get your hands on some liquid nitrogen? Reply Anonymous says: April 16, 2016 at 23:46 Airgas. They are everywhere. Reply Geoff PR says: April 17, 2016 at 01:17 If you know someone who works at a heavy machinery repair shop, check with them. They use it to shrink-fit metals. And don’t do it in a closed room, have plenty of ventilation. Reply SteveInCO says: April 17, 2016 at 12:10 And don’t do it in a closed room, have plenty of ventilation. I’ll second that. People die, painlessly and without warning, when breathing pure nitrogen. Your body doesn’t realize it’s not getting oxygen. (Your “I’m suffocating” reflex comes from accumulating CO2 that isn’t getting disposed, not depleting oxygen. In an N2 atmosphere, of course you have no trouble exhaling CO2.) Geoff PR says: April 17, 2016 at 21:00 For those unaware, LN2 has about a 700 to one expansion ratio. It will do something like this: “1981: Five technicians are asphyxiated while setting up a ground test for the space shuttle Columbia, then in preparation for STS-1, the first operational shuttle mission.” “The accident occurred during a nitrogen purge of the orbiter. John Bjornstad, 50, one of the five Rockwell International technicians who entered a rear section of the orbiter above the engine, died en route to the hospital. The second fatality, Forrest Cole, died two weeks later.” http://www.wired.com/2009/03/march-19-1981-shuttle-columbias-first-fatalities/ MLee says: April 17, 2016 at 13:07 @ Dr Brainwash Generally any company that sells compressed gases, like oxygen, acetylene, welding supplies, inert gasses etc. that is a decent size business will probably have liquid nitrogen also. I use it on occasion. A thermos can be used for transporting. Either leave the cap loose for venting or drill a small hole in it. Sometimes the seller can be fussy about the container they put it in due to liability issues. I’ve used the same thermos a dozen times without having a hole in the cap, just leaving it screwed on by a couple threads so that it can vent. The last time I went to fill it, the place I usually use refused to fill it because it didn’t have a hole in the cap. They were a little bit of knobs over it, so I drove around the block to the other gas business and they filled it. Reply Defens says: April 16, 2016 at 20:33 Considering that nitrogen is relatively inert and does not support combustion, all this proves is the gunpowder burns at really low temperatures. Try marinating the gunpowder in liquid oxygen, then see what happens, if anything. Reply Mk10108 says: April 16, 2016 at 23:32 I do not believe it does anything other than help cube the powder to make larger sparks. Unsolicited old guy information of the day. Nitrogen expands 720% by volume and displaces oxygen in a confined space. Thin plastic water bottles get a micro dot of liquid nitrogen just before capping. It expands and strengthens the bottle while using 30% less material. Reply Anonymous says: April 16, 2016 at 23:48 Pure oxygen atmospheres are very volatile. Mixing an explosive with liquid oxygen sounds like a really bad idea to me. Reply Joe says: April 17, 2016 at 09:11 Yes. Very bad idea. From doing trap to trap distillations of gasses using LN2, dry ice and various other low temperature baths, we learned that you have to be very careful not to get any liquid air (N2+O2) in your LN2 trap (i.e. your system has a pin hole leak). If so the organic gas youre distilling can spontaneously detonate. Liquid oxygen is very dangerous. Reply Avid Reader says: April 16, 2016 at 21:46 This mainly shows why this guy can’t have nice things. . . Reply Steven says: April 16, 2016 at 22:11 I want one… Reply Andrew Lias says: April 16, 2016 at 23:24 That doesn’t really seem to be any different than a conventional burn of powder. I was kind of thinking it would slow it more. Reply ThatsRayciss says: April 17, 2016 at 14:57 But can you baton with it? Reply Brian the paranoid wackjob says: April 18, 2016 at 06:29 I don’t know what is going on. The black stuff looks like rice being cooked, and I don’t know what the round glowing thing is but I like it. Reply Advocate says: April 18, 2016 at 16:33 So pretty much exactly what would happen if you ignited a bowl of black powder at room temperature, with a slightly slower ignition. Reply Write a Comment Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Notify me of follow-up comments by email. Notify me of new posts by email.