Peephole 
200 degrees. So recently we’ve been learning about
converging and diverging lenses. One is thick in the center and thinner
on the outside and the other is thick on the outside and thiner on the
inside. One magnifies and the other minifies. And a lot of it depends on
distance of the object from the focal point. There is a focal point on
one side of the lens, which is the object side which is the side the object
is on and the other side of the lens which is the other side which is the
side that the object is not on. Anyway, the focal point is the same distance
away from the lens on each side. Remember that.
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