Topic
Seeing
2 articles
Astronomy
Why does the Moon look bigger near the horizon?
A Moon coming up behind the houses looks enormous, and three hours later the same Moon overhead looks ordinary. Photograph both and the two discs come out identical. Whatever is growing, it is not the Moon.
Physics
Why does a mirror swap left and right but not up and down?
Raise your right hand at the bathroom mirror and the person in the glass raises a left one. Nothing in the room has moved sideways. So where is the swap actually happening?