How to make periscope with cardboard | Science project | Diy | DM
How to make periscope with cardboard | Science project
9x12 inch cardboard sheet 1
18x3 inch cardboard sheet 2
A periscope is an instrument for observation over, around or through an object, obstacle or condition that prevents direct line-of-sight observation from an observer's current position. In its simplest form, it consists of an outer case with mirrors at each end set parallel to each other at a 45° angle.
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