When not wearing my glasses, why is nothing distant in a photo blurry, but distant things in a mirror are blurry?
In: Physics
when looking at a photograph, light has to travel from the photograph to your eye, and that’s it.
when looking at a distant object in a mirror, even if the mirror is very close to you, light has to travel from the object to the mirror, and then from the mirror to your eye.
So say you have a mirror 30cm from your face, and you’re looking at something that’s 1m behind the mirror, the light will have to travel 130cm total.
(OBJECT) ———70cm——— (YOU) –30cm– (MIRROR)
Whereas, if you snapped a picture of the mirror in the same setting, and hung it on the mirror, all the light would have to do is to travel from the picture to your eye (30cm)
(YOU) –30cm– (PICTURE)
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