Milky Way Galaxy and Electromagnetic Spectrum - Assignment Example

The universe is so enormous that it cannot be explained in words nor can be imagined by anyone. Our earth which feels and seems to us very large is equivalent to a small dust particle in comparison to the enormous universe. Universe consists of several different elements. The universe comprises millions of superclusters. These superclusters consist of hundreds of different-sized galaxies. Of such a super cluster is our earth a part of. The supercluster consists of galaxies in the form of groups.

The galaxy in which earth is situated is called Milky Way and is situated in a group called the local group which comprises more than 30 galaxies (Caprara & Harris, 2003). O The Milky Way galaxy is extended in several directions and these extensions have been named 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 of its minor arms 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.

2. 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 the electromagnetic spectrum and their applications: 1. Radio waves: the basic and main use of radio waves for data transmission and propagation, in antennas for receiving and sending 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. Lesser-intensity microwaves are used for wireless connections between devices. Making use of lesser-intensity microwaves prevents 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 several various fields. It is also used widely in the field of astronomy and is used for research in this field.

Microwaves have their navigation application. It is used in cars, airplanes, and other means of transportation for navigation. It is also used to study different spectrums and is used in the field of spectroscopy. 3. Infrared waves: infrared waves have been classified as far-mid and near-infrared waves and each type has different applications. Far infrared radiations have applications in the field of astronomy. Photography and videography have special use of infrared waves in the field. 4. Ultraviolet waves: it is used for the ionization of particles.

It is used in several medical treatments; it helps in the production of vitamin D in the human body. It is also used in the treatment of several skin diseases. But excessive use of these waves can also cause several skin diseases. 5. X-rays: These rays are high-energy rays and are therefore used in high-energy physics fields. The main use of these waves is its use in the medical field, in the medical field it is used in radiography for imaging pictures of the human body. It is also used for seeing through objects having a thickness of less than a few meters. 6. Gamma rays: they are also very high energy waves and have their applications wherever high energy is required.

It has its greatest application in the field of astronomy where it is used for research purposes. It also has medical applications and is used to sterilize foods and is also used in nuclear physics. In the field of medicine, it is used for treating cancer and also has a lot many other uses in the field of medicine and is also used in the preparation of several medicines (Caprara & Harris, 2003).