The Milky Way is made up of a number of stars and constellations of stars, planets, rocks, sun, gaseous elements and other such similar things. Our earth is the part of a solar system which lies in the Milky Way galaxy. Our earth is the third planet from the sun. The Milky Way galaxy is extended in a number of directions and these extensions have been named as arms. The name of the arms has been given by the name of the constellation which can be observed in that particular direction. Orion spur is the name of one its minor arm in which our solar system is situated. It is placed at the far edge of the galaxy. The sun is approximately at a distance of 26,000 to 28,000 light years from the center of the Milky Way galaxy.
Electromagnetic Spectrum has been divided into different regions according to the difference in the values of the frequency and wavelength. Following are the types of waves comprising of the electromagnetic spectrum and their applications:
1. Radio waves: the basic and main use of radio waves in for data transmission and propagation, in antennas for receiving and sending of information between different places, it is also used in television and radio sets to catch data and signals, it is also used for wireless connection between devices, it is also used widely for military applications.
2. Microwaves: the basic use of microwaves is the heating effect in microwaves. It is also used for volumetric heating. A lesser intensity microwaves are used for wireless connections between devices. By making use of lesser intensity microwaves prevents from heating. Microwaves have their applications in the field of communication and are widely used for communication purposes. It also has a wide application in the working of radars and sonars which are used in a number of various fields. It is also used widely in the