Question

Special devices, the klystron valve or the magnetron valve are used for the production of electromagnetic waves. Name these waves and also write one of their applications.

Answer 1

Electromagnetic waves are those waves in which there is a magnetic field and electric field. One distinct feature is that both the electric field vector and the magnetic field vector are perpendicular to each other and also to the direction of propagation. The electromagnetic waves were first produced and confirmed by Hertz.

Complete answer:
A Klystron valve or the magnetron valve are generally used for the production of electromagnetic waves and that electromagnetic wave is Microwave.Microwaves are also known as the heating waves. They are used in microwave ovens for heating and for cooking purposes.One distinct feature of microwave is that they are reflected by metal but can pass through water.

These electromagnetic waves have their importance and are widely used in our everyday life. Radio waves are used in communications and telecommunications. They are also used in strategic military communications. Gamma rays are harmful rays and they cause blood cancer in human beings. X-rays are used in diagnosis in drawing the picture of a human's internal organs as they get deflected by the bones but not by the mass.

Note: The electromagnetic waves are produced by an accelerated charged particle. All electromagnetic waves travel with the speed of light in vacuum and they do not require any material medium to travel. The electromagnetic waves have characteristic frequency and wavelength. The frequency does not change as they move from one medium to another but wavelength may change.