Phototubes
Phototubes cut off (don't respond to photons) at sufficiently small wavelengths. This is because the phototube's glass does not transmit UV. They also cut off at sufficiently large wavelengths, where the glass does transmit the light. Why?
By OTA: Mukund Pandya, M.Sc.
OTA Rating: 4.9/5
Your Price: $2.19 (original value ~$3.99)
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