The laser essay

Women Empowerment Essay If women are empowered, they can break limitations imposed by the family and society, and take their own decisions. In schools, students are often asked to write paragraphs or essays on female empowerment.

The laser essay

Use an editor to spell check essay. The laser is a device that beams a ray of light that is both scientifically and practically of great use, because it is coherent light. The beam is produced by a process known as The laser essay emission, and the word "laser" is an acronym for the phrase "light amplification by stimulated emission of radiation.

The information is encoded The laser essay the beam as variations in the frequency or shape of the light wave. The good part is that since light waves have much higher frequencies they can also hold much more information.

Not only is the particle the smallest light unit but it is a particle as well as a wave. In beams of light whether they are ordinary natural or artificial the photon waves will not be traveling together because they are not being emitted at exactly the same moment but instead at random short bursts.

Even if the light is of a single frequency that statement would also be true. A laser is useful because it produces light that is not only of essentially a single frequency but also coherent, with the light waves all moving along in unison. Lasers consist of several components. A few of the many things that the so-called active medium might consist of are, atoms of a gas, molecules in a liquid, and ions in a crystal.

Another component consists of some method of introducing energy into the active medium, such as a flash lamp for example. Another component is the pair of mirrors on either side of the active medium which consists of one that transmits some of the radiation that hits it.

If the active component in the laser is a gas laser than each atom is characterized by a set of energy states, or energy levels, of which it may consist. An example of the energy states could be pictured as a unevenly spaced ladder which the higher rungs mean higher states of energy and the lower rungs mean lower states of energy.

If left disturbed for a long time the atom will reach its ground state or lowest state of energy. According to quantum mechanics there is only one light frequency that the atom will work with. There are three ways that the atom can deal with the presence of light either it can absorb the light, or spontaneous emission occurs, or stimulated emission occurs.

This means that if the atom is at its lowest state that it may absorb the light and jump to its high state and emit extra light while doing so. The second thing it may do is if it is at its highest state it can fall spontaneously to its lower state thus emitting light.

The third way is that the atom will jump from its upper state to its lower state thus emitting extra light. Spontaneous emission is not effected by light yet it is rather on a time scale characteristic of the states involved.

That is called the spontaneous lifetime. In stimulated emission the frequency of the light is the same as the frequency of the light that stimulated it.

The Impact of the Lasers Technology on Society Essay Sample

Carbon-monoxide, color center, excimer, free-electron, gas-dynamic, helium-cadmium, hydrogen-fluoride, deuterium-fluoride, iodine, Raman spin-flip, and rare-gas halide lasers are just a few of the many types of lasers there are out there in the world.

The diode laser is the smallest being packed in a transistor like package. The dye laser are very good for their broad, continuously variable wavelength capabilities. The theory of stimulated emission was first proved by Albert Einstein inthen population inverse was discussed by V.

This led to the building of the first ammonia laser in by J. Zeiger, and Charles H. In July of Theodore H. Maiman announced the generation of a pulse of coherent red light by means of a red crystal- the first laser.Essays on History Of The Laser.

We have found. essays. on "History Of The Laser" Laser Liposuction Technique Introduction Liposuction literally means sucking out fat. In practice, fat is removed from under the skin using a hollow stainless steel pipe (cannula) with the help of a powerful vacuum.

'Laser' or 'Light Amplification by Stimulated Emission of Radiation' is a source of light that amplifies or generates radiation by means of the stimulated emission process.

This source of light is unique in its nature that fundamentally differs from the ordinary sources of light. Essay The Laser Before we can learn about the laser we need to know a little bit about light (since that is what a laser is made of).

Light from our sun, or from an electric bulb, is called white light. It is really a mixture of all the different colours of light.

The laser essay

The colours range from violet, indigo, and blue, to green, yellow, orange, and red. Laser computer printers are very common now-a-days. Medicine: In medical field, laser surgery is very popular now, as it has several advantages in comparison to conventional surgery.

Due to high intensities of laser beam, it is mostly used in spot welding of bleeding vessels in the retina of the eyes.

The laser essay

The Laser Before we can learn about the laser we need to know a little bit about light (since that is what a laser is made of). Light from our sun, or from an electric bulb, is called white light 4 / Intel Laser Chip Intel's goal is to replace the current process that is used to pass on data through processors.

Free Essays words ( pages) Lasers Essay - lasers The Wonderful World of Lasers Laser stands for Light Amplification by the Stimulated Emission of Radiation.

laser Essays Sample & Examples