No. Though periscopes may be binocular
periscopes are used for submarines and war tanks
You would use periscopes for spying or looking above a persons head
No, periscopes allow you to observe objects while you are hidden.
Periscopes are devices that use mirrors to allow people to view past obstacles. Submarines commonly use periscopes to see above the water without having to surface.
Big ships such as Navy's have periscopes and submarines have it too. If it is high for you to see you will use an periscopes.
some types but if you took a periscope underwater you would see clear or black, oh and all the metal would rust.
It could be said that submarine crews use periscopes, and that is probably the most common use of these devices.
Camreras,periscopes
People who would find periscopes useful are those who would wish to spy on other people.:-)
Control room, submarines
Periscopes look like long tubes that have lens at both ends and have handles that can move it so other people can look through it