LASER BEAM
Is laser beam considered a device that is useful or harmful?
Laser is a master operating at optical frequencies to produce high-energy monochromatic beam of light. Laser is a scientific name which means or which stands for-Light Amplification Stimulated by Emission of Radiation.
A laser (acronym for Light Amplification by Stimulated Emission of Radiation) is an optical source that emits light in a coherent beam. The back-formed verb lase means "to produce laser light" or "to apply laser light to".[1]
In analogy with optical lasers, a device which produces any particles or electromagnetic radiation in a coherent state is also called a "laser", usually with indication of type of particle as prefix (for example, atom laser.) In most cases, "laser" refers to a source of coherent photons, i.e. light or other electromagnetic radiation.
Laser light is typically near-monochromatic, i.e., consisting of a very small band of wavelengths or a very specific color, and emitted in a narrow beam. This contrasts with common light sources, such as the incandescent light bulb, which emit incoherent photons in almost all directions, usually over a wide spectrum of wavelengths.
Laser action is explained by the theories of quantum mechanics and thermodynamics. Many materials have been found to have the required characteristics to form the laser gain medium needed to power a laser, and these have led to the invention of many types of lasers with different characteristics suitable for different applications.
The laser was proposed as a variation of the maser principle in the late 1950s, and the first laser was demonstrated in July 1960 by Theodore Maiman at Hughes Research Laboratories. Since that time, laser manufacture has become a multi-billion dollar industry, and the laser has found applications in fields including science, the defense industry, medicine, and consumer electronics
Laser beam has many use, it treats any conditions that is now difficult to be treated by ordinary medicine but only lasers can do it in just a short time.
As a student like me\, I don't have much information and knowledge about laser or laser beam all I know that it is a device that treats illness and somehow critical problems. Laser beam is now being used by licensed doctors , nurses , physicians and other professional positions related to medicine a and also related to technologies like laser beam..
laser is very useful in modern life because it is used in different fields such a some medicines, communications, discovering and researching and somehow in inventions,entertainment, industry and it is also seen a s the solution to mans energy. It can provide the world a pollution-free source of energy.
However, it can cause destructions and can be harmful to people and to our country an also to our health. It can be guided directly hit targets like airplanes,shops,buildings, and cities,. In films and movies or productions,it can reduce an enemy into vapor in a split of a second..
So therefore, laser is more useful but lee harmful of people must work and use it carefully to put the benefits of laser into good use. It maybe less harmful if it should not fall into wring hands as it may cause great mass destruction to mankind if it is used wrongly or in a wrong way but not in a proper hands.
Source of information; wikipidea.com
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