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The periscope have special magnifying lenses, and it makes the reflect images bigger so it is easy to see them
this is a lens
The first naval periscope was invented by hippolyte marie-Davy in 1854
this is a navy seal
Submarines use special electronics sensors that can be raised abover water
this is the electronic sensor
There's a telescope for a submarine but its called the periscope and its advanced
Periscopes allow people to see what's going on in the water
Submarines can dive thousands of feet underwater with ease.