A periscope is built like and works much like a telescope, with a long tube containing a mirror at each end. The mirrors are fitted into the tube so that they are parallel to each other at a 45° angle to the axis, or imaginary long center line, of the tube.
More complicated periscopes have extra lenses added to enlarge the image. Submarine periscopes contain this more complicated arrangement. They have reflecting prisms at the top and bottom of the tube, with two telescopes and several lenses between the two ends, and an eyepiece at the viewing end. A submarine periscope also has a thick, rigid, waterproof casing and can stand the pressure of great depths of water.
In addition to submarines, tanks also use periscopes in wartime to navigate or look for enemy targets. Both of these vehicles have periscopes which can be raised or lowered, as well as turned around in a 360° circle.
Periscopes can also be built so they see around corners!
30 Comments
them are cool
they are cool and we r doing the in science with the most boringist of teachers!! lol
thanks for helping me to do my project.
How are light waves used in periscopes?
periscopes are not cool they are weird cus we had to research them and they are soooooooooooooooooooo boring!
Thhaannkyouuu!! I so needed dis for meh science hmwrk!!!Reaallly hlepful!
Thanx!!
periscopes Rock my world
this is my homework you rock dude/dudet !!
wooo
thanks we r doin it for homework and i wasn’t sure how a periscope worked this realy helped
they cool. They work good almost like sucky sucky five dola.
It is so cool to have this! i WOULD GET DETENTION if i didnt get this info! so THANX!
i love periscopes there amazing , my life wud suck wifout thm
i sleep in bed with them !! && have a little portable one in my handbag
JODIE SMITH LOVESS PERISCOPES
Omg I love them too! and i have a portable one, i also write all kinds of facts about them in my periscope Journal!!
I got it for my b-day
But let’s say you are 500 feet beneath the water, you can’t just extend 500 feet of tubings to the surface.
or can u..? lol dunno…
Thanks first time heard about Periscopes !
Hi
This is what I was looking for, but I need an explanation that uses these words:
Light
Light Travels
Reflection
Source
Reflect
Eyes
Mirror
Straight Line
Please help me, because this has to be in on Wednesday. Thanks!
Periscopes are also known to use Triangular prisms instead of flat mirrors, however the same principles still apply. The hypotenus of the prisms must be parallel from each other, and at 45 degrees from the axis.
Submarines don’t have windows either so they use the periscopes to look ahead of them, not only above the water… I think xD
Thanks for sharing this! (:
I love this website i come on it like every day, my life wouldn’t be worth living without it, I LOVE PERISCOPES ASWELL!! please please write more about them!!!
I got a portable one for my b-day, its amazing im so happy i can take it everywhere with me
please give me more info on periscopes cos i wanna write it in my journal!! :0
poopy doo u need to get a lu8fe and can u plz leave my room u nutter
Kimberly I know its u, ur in my science lesson aswell as lizzie dizzie u shouldn’t mock peoples names…
poopy doo PLZ stop talkng about ur periscope and can u plz leave my room
God U creep i dont even know u, im not in ur room i dont even know who u r… leave me alone im just a poor kid that has an obsession with periscopes
Amber i know its you ur in science with me
who the heck is Amber u Creep just stay away from me im telling my mummy and my pet periscope, he’s a very good listener
i used it for my homework
thanks soo much for helpin mee with mii homework