Describe about submarines. How are they useful for every country's security? How does reflection help in it?
Answers
Answer:
1.A submarine is a watercraft capable of independent operation underwater. It differs from a submersible, which has more limited underwater capability.
2.Submarines are used by the military as part of navy forces, protecting aircraft carriers, performing reconnaissance and carrying out other tasks. Submarines are also used in other areas such as marine research, undersea exploration and salvage missions. Some submarines can remain submerged for months at a time.
3.Submarines have periscopes so that people inside can what is on the surface of the water. A periscope is a useful example of the law of reflection at work. It's important that your mirrors are placed at a 45° angle, because light always reflects away from a mirror at the same angle that it hits it.