Giant glass diffusion pump and cathode ray tube demo

This vacuum diffusion pump is made entirely of glass so we can see how it works. I also show a CRT built from a glass lab flask.

The pump was bought on Amazon!

Diffusion pump instructions translation:

I used DC-704 silicone diffusion pump oil:

The tabletop burner and fuel are commonly found at Asian supermarkets.

Phosphor paint:

Water chiller:

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