Sorry if this seems like a dumb question, but I have trouble understanding the concave mirror diagrams.
For example, a candle is resting on the ground(the principal axis), they will draw the reflected candle as if it’s not even in the mirror and it’s underneath the ground. I get confused and ask myself, “How can a candle reflect in the ground? And how can the light rays go through the ground?”
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What’s important to an image is the angle at which different rays of light reach your eye (or a camera or other detector). When there’s a mirror, the reflected light comes from a different angle, but your eyes don’t “know” that. It’s as though the light came from a different place, and what they’re drawing is what that different place *would be* if the light had been traveling in a straight line.
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