Table of Contents
How are periscopes constructed?
Periscopes can be constructed using a pair of flat mirrors or prisms and a rectangular hollow tube that has a viewing window at the top and bottom of the tube. The mirrors within this structure are fixed at an angle of 45o at the two ends of the rectangular hollow.
What are the materials needed to make a simple periscope?
Make Your Own Periscope!
- Two empty milk cartons.
- Cardboard cutter.
- Gaffa tape.
- Pencil.
- Two rectangular hand mirrors.
- Ruler.
- Scissors.
What are periscopes used for today?
Uses Of Periscope
- It is used in submarines to determine the distance of a torpedo and helps in deciding the right time for the attack.
- It is used in a nuclear reactor to observe the chemical reactions that are taking place.
- In military periscopes are used to observe from their hiding position.
Do submarines still use periscopes?
Modern submarines are no longer built with the single rotating, one-person-at-a-time periscope that we’re used to seeing in the movies. Instead, periscopes aboard the U.S. Navy’s Virginia-class subs consist of two 360-degree rotating photonics masts with high-resolution cameras.
How periscopes are used in submarines?
Submarines have periscopes so that people inside can what is on the surface of the water. In a periscope, light from an object strikes the top mirror at 45° and bounces off at the same angle. This sends light directly down the tube and onto the lower mirror.
How does kaleidoscope work?
A kaleidoscope works by reflecting light. Since you have filled the end of the kaleidoscope with little shiny objects, the light bounces off those too and makes the interesting patterns of color. As you turn the kaleidoscope the little shiny objects move which makes the patterns of color move.
How does periscope look like?
A periscope lets you look around walls, corners or other obstacles. In a periscope, light from an object strikes the top mirror at 45° and bounces off at the same angle. This sends light directly down the tube and onto the lower mirror. This mirror, also at a 45° angle, reflects light directly to your eye.
How far up can periscopes go?
60 feet
A traditional periscope is up to 60 feet long, so that the hull can remain hidden underwater while the periscope lifts up hydraulically to poke up out of the waves. It provides a direct optical view of the surface, thanks to prisms and lenses.
Did Britain have submarines in ww2?
The British U-class submarines (officially “War Emergency 1940 and 1941 programmes, short hull “) were a class of 49 small submarines built just before and during the Second World War. The class is sometimes known as the Undine class, after the first submarine built.
What makes up the tube of a periscope?
Periscopes are made up of a long tube that contains either mirrors or prisms. The mirror or prism at one end captures the image and bends or reflects it so that it can travel down the tube to hit the mirror or prism at the other side, bending the image again so that it can meet the eye of the viewer.
How does a periscope work on a submarine?
At the bottom of the periscope, the light strikes another mirror and is then reflected into the viewer’s eye. This simple periscope uses only flat mirrors as compared to the periscopes used on submarines, which are usually a complex optical system using both lenses and mirrors. This activity is part of the Optics Educator Guide.
Who was the inventor of the periscope?
Jules Carpentier, a French engineer and inventor designed the submarine periscope. It was widely used during World War II in tanks and armoured vehicles. How To Use Periscope?
What is the difference between a periscope and a prism?
The left one uses an erecting prism whereas the right uses an erecting lens and a second image plane. 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.