This periscope extends upto 14 inches. There are assorted colors and they will be chosen at random Educational toys that help children learn concepts of internal reflection and refraction. Made using safe and high quality materials. A simple periscope is just a long tube with a mirror at each end. … In the periscope, light hits the top mirror at 45° and reflects away at the same angle. The light then bounces down to the bottom mirror. When that reflected light hits the second mirror it is reflected again at 45°, right into your eye. Besides reflecting prisms, periscopes on submarines usually have two telescopes. A submarine features heavy-duty, thick waterproof casing that makes it sturdy enough to withstand high water pressure.
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