periscope
thumb|right|Principle of the periscope. The periscope on the left uses mirrors whereas the right uses prisms. a Mirrors b Prisms c Observer's Eye
AI overview
A periscope is an optical instrument that uses mirrors or prisms to allow a person to see objects that are above or around obstacles by reflecting light into the observer's eye. It matters because it enables people in submarines, trenches, or other confined spaces to observe their surroundings without exposing themselves to danger.
AI-generated from the Wikipedia summary — may contain errors.
Wikidata facts
- Image
- Periscope (PSF).png
Sources (2)
via Wikidata · CC0
Article
10 sectionsContents
- Early examples
- Armored vehicle periscopes
- Gundlach and Vickers 360-degree periscopes
- Periscopic gunsights
- Modern specialised AFV periscopes
- Naval use
- Aircraft use
- See also
- References
- External links
thumb|right|Principle of the periscope. The periscope on the left uses mirrors whereas the right uses prisms. a Mirrors b Prisms c Observer's Eye
thumb|right|Principle of the lens periscope. The two periscopes differ in the way they erect the image. The left one uses an erecting prism whereas the right uses an erecting lens and a second image plane. a Objective lens b [[Field lens c Image erecting lens d Ocular lens e Lens of the observer's eye f Right-angled prism g Image-erecting prism]]