When you see your own face in the mirror, no matter how far you are, the portion of the mirror showing your face is always half the size of your actual face.
Try it. Look at a mirror and put a ruler on the mirror, the size of your face on the mirror will always be the same, no matter how far you are. It will be half the size of your actual face.
When you see your own face in the mirror, no matter how far you are, the portion of the mirror showing your face is always half the size of your actual face.
What?
Try it. Look at a mirror and put a ruler on the mirror, the size of your face on the mirror will always be the same, no matter how far you are. It will be half the size of your actual face.