Underwear! How devolved - I think I'll stop before "Well, ever since the operation..."
Let me dig. Ok, as a kid I once made a speaker cabinet pair with a cloth covering finish. How to get it tight and to stay? I built it with one corner seam mechanically clamped shut - just pull the cloth tight and clamp the cabinet edge seam "jaws" down! Just used one 1/4-20 countersunk pan head bolt too, the head of which was under the cloth. (I used Phillips components; an 8" octagonal woofer and dome tweeter)
It was dark blue wide whale corduroy... I forget the grille cloth - probably bright orange.
Let me dig. Ok, as a kid I once made a speaker cabinet pair with a cloth covering finish. How to get it tight and to stay? I built it with one corner seam mechanically clamped shut - just pull the cloth tight and clamp the cabinet edge seam "jaws" down! Just used one 1/4-20 countersunk pan head bolt too, the head of which was under the cloth. (I used Phillips components; an 8" octagonal woofer and dome tweeter)
It was dark blue wide whale corduroy... I forget the grille cloth - probably bright orange.
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Ummm glass doesn't "burn". Nor does it have any carbon in it. So not sure where the carbon plasma was coming from. Glass is basically calcium/sodium silicates, and has well known refractory properties. No carbon it it, though. Unless you are talking about viral glass or some such, eh?
haven't lived until you see an 8KG casting go off in a 750C salt bath for heat treating because the crane operator forgot the dewatering step. not pretty.
then there was the 100KW deuterium fluoride laser test stand (~599kg nickel/stainless steel) that exploded when the fluorine / kerosene combustor blew up @ 1000F due to a seal failure. Just think BLINDING WHITE FLASH and LOUD BOOM!!
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It's most likely nigrosine (I know, but Google it) it's the dirt-cheapest of all the black aniline dyes, made from nitrobenzene, aniline (duh), HCl, and iron filings. Don't ask how I know this
The BFRC generated from rocket fuel, UDMH (unsymmetrical dimethylhydrazine, nasty stuff) fuel and red fuming nitric acid oxidant when the reaction gets, shall we say, out of hand can be spectacular
Etches car paint surfaces for miles around as well
That oven was retired from kitchen duty when the door interlock failed. It was used for science experiments for years until the night these photos were taken. It had been used to "nuke" (actually a 700 watt radio transmitter on 2.45 GHz) all sorts of stuff including some PC boards and an entire 2400 baud dial up modem. There were plenty of carbon based contaminants inside the oven already.
The carbon flame likely started from the plastic like substance in the base, or the glue used to hold the glass tube, base and metal ring assembly together. However it happened, there was molten glass dripping down the back side of the tube that was engulfed in flame, and flaming glass piling up on the oven floor when I killed power and opened the door.
Many have done the "nuke steel wool" fireworks display. So had I. This time I used an SOS pad which is steel wool with a soap coating. The coating burned releasing a carbon ash that turned into a plasma ball that filled the entire oven after about a minute or two. Either the glass floor of the oven was cracked from a previous experiment, or this plasma was hot enough to breach it because a bright arc erupted that started lighting up the ground under the oven. At that point the power was killed and the oven finally hit the trash.
All of these experiments took place outside on the pool deck in Florida. The oven was on a grounded hand truck such the the entire experiment could be kicked right into the pool if anything got out of control. Power came through a GFCI and the panic button setup that I use in the lab for HV experiments. There is a big red emergency stop button from a gas station that SHORTS the AC line if smacked. it got used a few times inside the house, but was never activated in these experiments.
I simply cut the power when the ground below the oven began lighting up, unplugged it all, then investigated.
We got some sodium from the chemistry lab in high school and threw it in the toilet. Better than an M-80 firecracker.
sodium
when I was lab assistant in 10th grade we chucked an old can of sodium into a nearby lake after school, to see what happened. Not much for maybe 15 seconds, then a big KAWHOOSH and a fountain of water with fish flapping around in the aftermath from the hydrogen explosion.
when I was lab assistant in 10th grade we chucked an old can of sodium into a nearby lake after school, to see what happened. Not much for maybe 15 seconds, then a big KAWHOOSH and a fountain of water with fish flapping around in the aftermath from the hydrogen explosion.
I like him in just about everything he has done, but there's one obscure character he played that takes the cake - Colonel Angus.
Google it, if you must.
Or... Colonel Angus on Vimeo
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