Sun Simulator Patent, Proof of use of artificial Sun!!!

First published at 03:36 UTC on February 6th, 2021.

Original video is here https://bit.ly/3aD5r27 Press down on video and menu pops up, choose download to save it.
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Laboratory sun simulator
https://patents.google.com/patent/US3202811A/en
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Solar simulator
https://patents.google.com/patent/US3247367A/e…

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