Light passing through different lenses - GIF

Light passing through different lenses.

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Previously:

https://www.homemadetools.net/forum/...115#post203386
https://www.homemadetools.net/forum/...653#post189983
https://www.homemadetools.net/forum/...851#post202384
https://www.homemadetools.net/forum/...600#post189766

Egon: Don’t cross the streams.
Peter: Why?
Egon: It would be bad.
Peter: I’m fuzzy on the whole good/bad thing. What do you mean “bad”?
Egon: Try to imagine all life as you know it stopping instantaneously and every molecule in your body exploding at the speed of light.
Raymond: Total protonic reversal.
Peter: That’s bad. Okay. Alright, important safety tip, thanks Egon.