Free Lasers Essays and Papers

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  • Lasers

    828 Words  | 4 Pages

    The laser is one of the most advanced tools we have in our civilization. Lasers are powerful enough to cut through a thick piece of steel, yet can be used in medical surgery. Lasers are used in the army, for guns, for range finding and a whole lot more. Most people don't know where the idea of the laser came from. The idea for the laser came from a machine called a maser. The maser was a tool that was able to strengthen, or amplify radio and light waves. The first laser was made in California

  • Lasers

    1062 Words  | 5 Pages

    What is a laser? A laser is a device that emits light through a process called optical amplification. An optical amplifier is a different device that amplifies a signal directly; it does not need to convert the signal to an electrical signal. Optical amplifiers are important in optical communication and laser physics. The word laser is an acronym for the phrase “light amplification by stimulated emission of radiation. Coherent light waves are light waves that are in phase with each other. This is

  • Lasers

    982 Words  | 4 Pages

    {1,2} {1,3} {2,3} {2,1} {3,1} {3,2} but if position doesn't matter then there are only 3 subsets: {1,2} {2,3} {1,3} Since {1,2} is the same as {2,1} Using this idea and many other ideas Einstein laid the foundations for the laser by theorizing about the stimulated emission of radiation. His idea was that if you had a large number of atoms full of excess energy, and they were ready to emit a photon at some random time in some random direction, if a stray photon passed by, then

  • The Laser

    982 Words  | 4 Pages

    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 colours range from violet, indigo, and blue, to green, yellow, orange, and red. These make up the visible part of the electromagnetic spectrum. Light is made up of particles, called PHOTONS, which travel in waves. The difference in the

  • Lasers

    1215 Words  | 5 Pages

    lasers The Wonderful World of Lasers Laser stands for Light Amplification by the Stimulated Emission of Radiation. Lasers work by producing an intense beam of bright light that travels in one direction. The laser has the unique ability to produce one specific color or wavelength of light, which can be varied in its intensity and pulse duration. The newest laser systems have become remarkably precise and selective, allowing treatment results and safety levels not previously available. All lasers

  • Lasers

    1739 Words  | 7 Pages

    that some laser beams are small enough and powerful enough to drill two hundred holes on a spot as tiny as the head of a pin? The first major advancement in laser development came in 1954. This was the year that Charles H. Townes, an American physicist, created a device that amplified microwaves. This device was actually called a maser at first, which was short for Microwave Amplification by Stimulated Emission of Radiation Masers. It produced microwaves of just one frequency. Then the laser was developed

  • Lasers

    1130 Words  | 5 Pages

    The laser is a device that produces a beam of light. The beam is produced by a process known as stimulated emission, and the word “laser'; is an acronym for the phrase “light amplification by stimulated emission of radiation.'; Lasers amplify light and produce coherent light beams. A light beam is coherent when its waves or photons are in step with one another. Laser light can be made extremely intense, highly directional, and very pure in color. BASIC PRINCIPLES Light can be characterized

  • Laser

    485 Words  | 2 Pages

    Laser Laser, pronounced LAY zuhr, is a device that produces a very narrow, powerful beam of light. Some beams are thin enough to drill 200 holes on a spot as tiny as the head of a pin. The ability to focus laser light so precisely makes it extremely powerful. For example, some beams can pierce a diamond, the hardest natural substance. Others can trigger a small nuclear reaction. A laser beam also can be transmitted over long distances with no loss of power. Some beams have reached the

  • Lasers

    1277 Words  | 6 Pages

    When most people see a laser beam they are amazed by its unique physical properties. Laser light is so unique from other light because it is coherent; unlike ordinary light, which travels in all directions, laser light travels in a straight beam. The word laser is an acronym for Light Amplification by Stimulated Emission of Radiation. The history of the laser is very interesting. Lasers have changed immensely since they were first invented. Before the laser was invented, Charles Townes developed

  • Laser Treatment

    938 Words  | 4 Pages

    Laser is an acronym used for Light Amplification by Stimulated Emission of Radiation. Laser treatment is a procedure used to cure skin problems with a strong beam of light. Experienced cosmetologists and dermatologists use this new technology to cure many ailments. Side effects of laser treatment: Several side effects can be experienced with acne blemish laser treatment like irritation, redness and swelling on the affected areas. These side effects persist only for a few hours or a day. In certain