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Periscope of submarine 12

The importance and uses of periscope

The periscopes allow the submarine to search visually for the nearby targets and threats on the surface of the water and in the air when the are submerged at a shallow depth , The...

Robots in military 0

Military robots uses and importance

The military robots The military robots are the autonomous robots or remote-controlled devices which designed for the military applications, They can walk through the minefields, deactivating unexploded bombs or clearing out hostile buildings.

Reflection of light 0

What are the laws of light reflection ?

Laws of light reflection The distance between the Earth and the Moon can be measured by the reflection of a laser beam directed from the Earth towards a reflection surface placed on the Moon...