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A comment on Fluorite lenses: Corrective capabilities beyond ordinary optical glass. Parent comment

Re:Fluorite lenses: Corrective capabilities beyond ordinary ... by infogulch on Wednesday January 17, 2024 @03:28AM (#39024916)
How about a practical demonstration of optical Fourier transforms?

https://www.youtube.com/watch?v=Y9FZ4igNxNA

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