the.com/periscope
a clever stack of mirrors that lets a hidden eye outwit the surface world.
means a tubular optical instrument with mirrors or prisms that lets you see over or around an obstacle, most famously letting a submerged submarine peek above the waterline.
from Built from Greek peri- 'around' and -scope, from skopein 'to look at, examine' — the same root that watches in 'telescope' and 'microscope.' So the word literally means 'to look around,' which is exactly what it does: a 19th-century coinage that gained fame with the rise of submarines, where the device let crews look around the surface while staying hidden beneath it.
- submarine vision
- Lets crews see while staying invisible underwater
- mirror trick
- Two angled mirrors bend light around obstacles
- trench origin
- WWI soldiers used them to peek over safely
- tank version
- Armored vehicles use periscopes to avoid exposing eyes
- phone cameras
- Folded periscope lenses now enable huge optical zoom
for instance
u-995 german submarine — wwii u-boat with intact periscope, museum ship in laboe, germany since 1957