This guy is a gem: https://www.youtube.com/watch?v=UTgrWmOk4q8
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@cjd
What is the significance of 632 nanometers?
Also yes to any comments about collecting books, though I would push the date a little further back to the 1920's and 30's for the cut off.
I've seen otherwise excellent grammar textbooks from the 60's that are chock-a-block with race communism.
What is the significance of 632 nanometers?
Also yes to any comments about collecting books, though I would push the date a little further back to the 1920's and 30's for the cut off.
I've seen otherwise excellent grammar textbooks from the 60's that are chock-a-block with race communism.
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1Hmm interesting... It sounds like an optical wavelength, I'd never seen any of their stuff before, I'm just familiar with Dan Gelbart.