Why Do Mirrors Flip Left & Right (but not up & down)?

Опубликовано 6 декабря 2019, 14:00

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This video is about why words flip left & right (aka horizontally) in a mirror but not up & down (aka vertically). The answer has to do with specular reflection, mirrors being like windows into another world (alternate universes, just with in and out flipped!), and transparency of the things we write on.

REFERENCES
Specular Reflection
en.wikipedia.org/wiki/Specular...

PhysicsGirl video about mirrors
youtube.com/watch?v=vBpxhfBlVL...

Fermat’s principle

electron6.phys.utk.edu/optics4...

Thomas-Fermi screening
en.wikipedia.org/wiki/Thomas%E...

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