Tags » Cathode Ray

Came across this nice Cathode Ray tube

I saw this CRT demo tube and took this video for to other can see the working tube.
This tube give very nice demo of cathode rays being deflected by magnet. Mfg since 1932.

Spectrum Tube

Spectral lines of hydrogen

Hydrogen spectrum lines observed from spectroscopy a captured  with my mobile camera.Mfg since 1932.

Spectrum Tube