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Things You Don't See Anymore Part 3

Panasonic Boom Box 1985.jpg
 
I have one of the originals from way back. I think someone is reproducing them now, but for what practical reason I couldn't imagine?
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it is called a Chestlight it has a metal on off switch and you can focus the light beam runs off two D cells the strap is for what it says its for to wrap around your chest for hands free operation :)
 
Those are cool. It's like having a small bomb strapped to your head.
A freshman year college Physics prof way back when wanted to show us a real-life example of rocket propulsion. He took an empty gallon plastic milk jug, put about a cup of water in the bottom, dumped in a chunk of miner's carbide, swirled a bit, laid it sideways on the front lab bench, and lit 'er up. He used slightly too large a chunk of miner's carbide - the jug took flight, rocketed through the lab room, luckily missing any students (right down the center aisle, his aim was good), and exploded against the back wall in a huge ball of flame that singed the wall, the floor, and the ceiling for about 5' out from the wall.

Demonstration accomplished! Got our attention! :D
 
Now why do suppose this toy ain’t around anymore?:

AtomicLaboratory Kits
Science-based toys still win over parents today, but we guess this particular '60s chemistry kit wouldn't pass muster anymore. The Gilbert U-238 Atomic Energy Lab — from the inventor of the Erector Set — actually contained four types of uranium ore.
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