For his Hackaday Prize entry, [castvee8] is making seven-segment displays out of vintage neon lamps. It looks great, and it’s the basis of an all-vacuum tube calculator. The core of this build ...

653) the paper on the presence of helium and neon in vacuum tubes (containing hydrogen) after the gas had been sparked, we have carefully compared the spectrum lines that are supposed to be ...

It is interesting that just about all vacuum and gas-filled tubes evolved from that technology. After all, a neon light is really a type of gas-filled tube and so is a common neon bulb.

They applied a high voltage to a vacuum tube placed with the obtained gas sample to observe the spectrum. Interestingly, they perceived a brilliant glow, which had never been seen before. The ...

Collie, and Mr. Patterson described some experiments which they regard as proving the transmutation of other elements into helium and neon. I have been making experiments of a somewhat similar ...

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