Fascinating stuff ! !
When I was a lad I read about the soft glass, and remember it supposedly could be molded like clay.
As for the Tesla coil, it's difficult to separate fact from fiction, but it still could be investigated and put to use.
Interesting that the number one invention had to do with water to energy. About 8 years ago I read about some bloke who claimed to have invented an audio based system of splitting water. He said he installed it in a large motor-home and drove across the USA using only water as fuel. His claimed breakthrough was, of course, that his device used far less energy breaking the water down than the usual electrode system. I actually looked up his patent (! !) but couldn't decipher the diagrams.
_________________
I wake to sleep, and take my waking slow. I feel my fate in what I cannot fear. I learn by going where I have to go. ~Theodore Roethke