What is a Photomultiplier Tube? [L19]

Part of our physics lecture series:

[tillylainton]

my grandad has written a book regarding photomultipliers. It's called "the photomultiplier handbook". he spent most of his life studying them. he has recently been diagnosed with dementia and has forgotten it all. I'm here today to learn a bit more about them to really appreciate and value his work.

[eng.Mimi.]

thank you very much! Very informative !

[Alan-qejg]

Hi, can you explain that "ups" picture at 5:35?

[kevinleebailey]

Could Moray's valve been similar to these devices.