Look into the periscope. What do you see?
Is the picture you see enlarged or does it have the same size as it would have if you saw it without the periscope?
Also try
Use the handle to rotate the periscope to both sides.
How much of the exhibition below are you able to see?
Fun facts
The periscope consists of two tilted mirrors inside a pipe. Soldiers during the 1st world war used periscopes to be able to look above the edge of the trenches. In a submarine the periscope is used to see what happen on surface while it is submerged.
Traditionally lenses are used in periscopes to enlarge what you see and to cover a larger part of the field of vision. Modern periscopes use video cameras instead of mirrors and lenses.