So objects represented in a concave mirror are right side up past the focus point, but upside down before the focus point. When moving an object closer to the focus it appears larger and larger until it fills the frame then when it starts shrinking again it is reversed. What happens during that transition? Does the image rotate and if so what determines if it’s clockwise or anticlockwise? Does it just become a jumbled light mess that reconstitutes? I’ve been standing in front of a mirror in my bathroom moving my toothbrush back in forth like an idiot and I simply can’t wrap my head around it
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If you’re able to keep your pupil exactly at the focal point, looking at any point on the mirror would give you a reflection of the pupil itself, because every point on the mirror is pointing exactly at your eye. Since it’s a cheap mirror, its concanvity is not perfect, and being off by just a tiny fraction means that some areas show the eye, while others may show your forehead or nose or something else. So normally imperceptible flaws in the concavity of the mirror are magnified so much that what you actually see is unrecognizable. It doesn’t help that keeping your eye that still is impossible, and every small movement you make is also magnified a lot.
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