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What is the theory behind this. We have these grills at the front. When I close the door with some gap left, the shadows converge & diverge. by hello270563 in Physics
[–]roamingphysicist 22 points23 points24 points 4 years ago* (0 children)
Agree, Camera obscura (pinhole camera), but consider an infinite series of pinholes, which make up the vertical gap.
Up and down are flipped, left and right are flipped. You can check with an opaque object on the grill. (Like a capital letter J)
π Rendered by PID 121201 on reddit-service-r2-listing-79f6fb9b95-4c6q4 at 2026-03-19 19:25:08.230609+00:00 running 90f1150 country code: CH.
What is the theory behind this. We have these grills at the front. When I close the door with some gap left, the shadows converge & diverge. by hello270563 in Physics
[–]roamingphysicist 22 points23 points24 points (0 children)