#video of how to get back into a canoe by yourself when you’ve flipped it. #scouting #tutorial
#video of #Li-ion batteries catching fire and using a fireproof metal case to stop it.
#video of #manufacturing a #Li-ion cell in a laboratory
#video of stock footage and animations explaining how #ethylene is industrially produced by thermal cracking of ethane #materials distilled from natural gas at 850° (catalysts unspecified), and the ethylene is reacted with butylene (using other unspecified catalysts) to polymerize it. Free-radical peroxide initiation is not mentioned.
#video showing a polyethylene plant operated by BP, starting from #ethylene (usually derived from cracking naphtha #materials) at 1500 atmospheres and 160° with about 20% yield of polyethylene on each go-around, so the unreacted ethylene gets compressed again.