Please submit comprehensive scientific explanations as a reply to this comment.
|Scrotum H. Vainglorious |
Chem 1A students.
I'm assuming the crucible popped due to the thermal shock of coming out of the little oven into room temperature too quickly? It seems like it'd be designed to be able to take that.
I thought it was the mold they were pouring it into that popped from being heated up so rapidly.
Watch it like 20 times and you'll see that it happens on the left side of the right trough of the mold, maybe a tiny crack or a bubble in the metal, but the liquid metal definitely blows out from there.
I think what happened is as the aluminum flowed to the left side, due to the large amount of surface tension, a bubble of air was able to get trapped beneath it when the flow hit the left side, and that bubble of air expanded rapidly so as to cause the explosion.
Guys I'm pretty sure it was the mysterious incantation at the beginning of the video.
Bernoulli's principle at work once again. The air flow around the aluminum caused decreased pressure which compressed the aluminum to its incompressable state - resulting in an unsteady potential flow of H2O. To put it in laymens turns, this would be like peeing on a burning building: not going to solve the problem but may show up on Youtube.
glasseye got it right. They warned us in shop class and anytime I've seen molten metal demonstrations that if there's a tiny amount of any type of watery liquid around it will flash to steam and explode. First time I've seen it happen.
45 seconds to find a fire extinguisher
|James Woods |
19 seconds to think of swatting at it with a glove.
The T-1000 was a lot scarier in the movies.
|Big Beef Burritos Supreme |
Oh fuck! What now?
Lets just stand around barking!
Good, clear thinking there, guys.
Never seconds to realize the guy with the full face shield maybe should have poured.
|Caminante Nocturno |
Maybe they should experiment with how to react calmly in an emergency.
These are the same sorts of guys who stick forks in the electrical sockets in science labs.
What do you mean, it "popped"?
I love everything about this video. School labs are awesome, in my organic chem lab a girl spilled about a liter of ether all over a work bench and didn't even think to warn anyone.
"you had your face shield on?" "yes, yes"
Actually, the guy pouring only had goggles on.
Eso les pasa por intentar hablar español, gringos pendejos.
That's right, you tell him!
Get back under your bridge spanning the Rio Grande!
The video ends right before the good questions begin. They should show this video to all prospective high school science teachers.
god punishing the heathen folk
And that's why I teach in the social sciences.
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