Milo owns two telescopes, one at the top of a mountain and one at the base. If he looks through the one at the top of the mountain, how much interference can he expect compared to the one at the top of the mountain?
more less
A B
Many observatories are built on high mountains. There is less air above the telescope, so there is less interference from the atmosphere.
interference from the atmosphere
less
less
LESS
LESS
less air above the telescope
more
less
of the mountain
interference
interference
interference