Introduction to optics 

Hello Friends,
A cool educational video from the 50's that explains clearly the basic principles of how light works.
I found this video on the internet and my contribution was to upgrade its quality to make viewing more enjoyable. As far as I understand, this video is public domain, so you can take it an do whatever you want with it.
keywords: How a lens works, principle of a lens, lens basic operation, how a lens works in photography, photography, film photography, how a camera lens works, vintage photography, principles of optics, optics, how light behaves, behavior of light, light experiments, experiments with light
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If you find this video useful, informative and adds value to you (and possibly saved, or made some money by repairing the camera or lens), then consider donating to the channel