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  • [music]

  • OK, so we are about to demonstrate

  • Dragon's Breath ammo, the ultimate in muzzle flash, and we got

  • the most manly person we know, John to do it, John can you hear us? - yeah

  • -Are you ready? - Ready.

  • 3..2..1.. [bang] [laugh]

  • [music]

  • What if you catch yourself on fire?

  • [bang] [laughs]

  • Fantastic!

  • 3.. 2.. 1.. Fire

  • - Holy Crap. - That's amazing.

  • Aah, that's the shot right there.

  • Look at this. - Ow man.

  • 3..2..1..

  • Alright, man play with fire time is over.

  • It's time for you to get Smarter Every Day. So I've obtained a document

  • made by the US Department of Energy back in 1984 reviewing Zirconium

  • Zircaloy Pyrophoricity. This is important because this is what's used in

  • Dragon's Breath ammunition. This is a little different than normal tracer ammunition which uses

  • magnesium or phosphorous if you're an American, or barium salts if you're Chinese

  • or Russian. So this document reveals how

  • Zirconium is actually ignited. Way on down here on page

  • 19, there's a graph that shows how ignition temperature

  • in Celcius is a function of log specific area

  • which is the external surface area of the particle of zirconium

  • ratioed with the mass. So basically as the particle

  • gets smaller, the ignition temperature gets much easier.

  • So you can see that inversely proportional here.

  • So, why do we care about that. Well it's just interesting.

  • Another thing that's interesting about zirconium is, well, on the periodic table it's

  • way over here, it's very similar to hafnium, it has some of the similar characteristics.

  • One thing that's neat about zirconium is that it doesn't care about neutrons

  • at all. Neutrons zip right through it, and it doesn't absorb neutrons very

  • much at all, which makes it very very nice for the nuclear industry.

  • It's also very low in terms of it's reaction to

  • corrosives, so it's used as cladding for nuclear

  • reactor fuels. The reason being is the neutrons go through and that

  • energy doesn't get absorbed. This is interesting until

  • you have a Fukushima type incident, and when you do

  • start increasing temperature, like we saw earlier on that

  • chart, you start to get some reactions. As you can see here

  • one of the byproducts of that reaction is hydrogen,

  • often gas. This is what happened at Fukushima. It built up hydrogen gas

  • when the zirconium started heating up, and reacting, and that

  • is what detonated. That detonated and causes all

  • kinds of problems. So anyway, now you're Smarter Every Day, and

  • if you would help me out, I'd appreciate if you'd pass this along to some of your smart buddies

  • or people who like guns and see if you can help me get some

  • subscribers. I would greatly appreciate that. Have a great day. Bye.

  • [ Captions by Andrew Jackson ] captionsbyandrew.wordpress.com

  • Captioning in different languages welcome. Please contact Destin if you can help.

[music]

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B2 zirconium dragon breath temperature fukushima hydrogen

12 Gauge Dragon's Breath AT NIGHT!- Smarter Every Day 2

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    Furong Lai posted on 2012/12/16
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