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Free research essays on topics related to: laser

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  • Funk And Wagnalls Carbon Dioxide
    941 words
    Carbon dioxide lasers are one of the most powerful lasers ever constructed. The word LASER stands for Light Amplification by Stimulated Emission of Radiation. Lasers are devices that amplify light and produce light beams, ranging from infrared to ultraviolet. A light beam is consistent when its waves or photons, increase while mixing together. Laser light can be extremely intense, highly directional and very pure in color. Gas lasers such as the carbon dioxide laser is made active by ultraviolet...
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  • Solid State Lasers Back And Forth
    2,014 words
    Laser is an acronym for light amplification by stimulated emission of radiation. In the last century many types of lasers have been used for many different applications from welding to surgery to military and even many uses in every day life by harnessing the principles of light and stimulated emission. To understand how lasers work we must first understand the physics behind light waves. Light is emitted from a source and travels in straight lines and when it strikes an object is either absorbe...
    Free research essays on topics related to: stimulated emission, compact disk, back and forth, solid state lasers, laser light
  • Imperial Tie Interceptor Squadrons Tie Interceptor Squadrons Sbd
    5,415 words
    ... ght give some players a hard time? This mission is fairly easy if you just remember two words: autore mode. With your turrets turned on in this mode you should be able to take out a lot of ships at a very high frequency. Just target the nearest enemy and engage. Once the job is done, go for some bonus points. No other ships will arrive in the area any more, so you don't have to worry about a thing. Just make sure you have your shields recharged to a reasonable level before you jump to the Re...
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  • Amount Of Energy Stimulated Emission
    1,113 words
    There are only about 100 different kinds of atoms in the entire universe. Everything we see is made up of these 100 atoms in an unlimited number of combinations. They continuously vibrate, move and rotate. Even the atoms that make up the chairs that we sit in are moving around in class. Atoms can be in different states of excitation (Bertolotti 48) or they can have different energies. If we apply a lot of energy to an atom, it can leave what is called the ground-state energy level and go to an e...
    Free research essays on topics related to: stimulated emission, high speed, amount of energy, solid state, laser light
  • The Eye And Laser Surgery
    1,567 words
    A Functioning Eye (Emmetropia) The eye is the organ of sight. It is used in almost everything we do, from playing sport to reading. A normal and well functioning eye can focus objects and images, both near and far, perceive depth and adapt to changes in light. The perception of depth is due to having two separate eyes creating two separate images, while the ability to adapt to light change is attributed to the iris and the dilator muscles. However these two aspects of the eye are not involved in...
    Free research essays on topics related to: laser, early 1980, blurred vision, cornea, light rays
  • The Eye And Laser Surgery
    1,557 words
    ... pascal pulse of 250 is very long compared to other lasers. The discharge is build up in three phases: 1) X-ray pre-ionisation provides a homogeneous distribution of electrons in the discharge area. 2) A high voltage pre-pulse with a very fast rise time multiplies these electrons in an avalanche process, providing a homogeneous ignition of the discharge. Finally the main pulse gives the high current at moderate voltage to create the laser output. The energy per pulse is 1 Joule. With a repeti...
    Free research essays on topics related to: cornea, tissue, eye drops, post operative, dim light
  • D Sezgin Sun Types Of Lasers Laser
    684 words
    The light beam produced by most lasers is pencil-sized, and maintains its size and direction over very large distances; this sharply focused beam of coherent light is suitable for a wide variety of applications. Lasers have been used in industry since 1964 for cutting and boring metals and other materials, and for inspecting optical equipment. In medicine, they have been used in surgical operations. Lasers have been used in several kinds of scientific research. Lasers have opened new fields in s...
    Free research essays on topics related to: laser, surgical, surgery, lasers, blood loss
  • Magna Versus Royal Laser
    1,309 words
    Society has become very cynical regarding business ethics. With liberalization and globalization becoming increasingly more important in the 21 st century, it has become more difficult to evaluate and validate the goals of a business while fulfilling the demands that ethics put on government, business and consumers. Clearly, the purpose of a business can take two opposing views. From a business standpoint, an organization's primary goal is to offer quality to its customers, efficiency from its e...
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  • Solid State Lasers Beam Of Light
    1,749 words
    L A S E R S Did you know 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 freq...
    Free research essays on topics related to: amount of light, stimulated emission, solid state lasers, beam of light, electron beam
  • Fibre Crystal Mid Infrared Lasers
    1,998 words
    Fibre crystal mid-infrared lasers As we know, a laser is an optical oscillator made out of a gas, liquid or solid with mirrors at both ends (see, e. g. , The Computer Language Company Inc. , 2007 b). To make the laser work, the material is pumped with light or electricity. This pumping has excited the electrons and has caused them to jump to more high orbits. Some electrons do spontaneously drop back to lower energy levels what releases photons (i. e. quantum's of light). The photons do then sti...
    Free research essays on topics related to: visible light, heavy metal, computer language, n d, infrared radiation
  • Stimulated Emission Positively Charged
    948 words
    Lasers HISTORY OF LASER PRODUCTION The roots of laser mechanism are very modern. In 1900 German physicist Max Planck presented an explanation of why the colors of a glowing hot body may change with temperature. He also proposed discrete quantum theory saying that radiations come in discrete quantities called quanta. Therefore radiations are not only a series of waves but a stream of particles called photons. By 1917, Einstein has outlined the principles underlying the production of laser radiati...
    Free research essays on topics related to: quantum theory, basic principles, stimulated emission, energy levels, positively charged
  • Three Dimensional Laser Light
    2,345 words
    I have chosen to do my MIS paper on holograms. I have chosen this topic because it is a technology that has been around for sometime now, but has become increasingly more popular in recent years. Holograms are now found in virtually all types of products. These products consist of currencies, checks, stock certificates, credit cards, passports, ID cards, computer software, audio / visual tapes and CD ROMs, aircraft, software, electrical / electronic appliances, building materials, food, pharmace...
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  • Sound Waves Laser Light
    2,160 words
    While working to Holography Holography While working to improve the resolution of an electron microscope, a brilliant man named Dennis Gabor had developed a theory on Holography. This dates back to the year of 1947. Dennis Gabor is a British/Hungarian scientist who created the word Holography from Greek terms. He used the word holo's, meaning whole, and gramma, meaning message. Gabor characterized his work as an experiment in serendipity that was begun too soon. The next decade brought about fru...
    Free research essays on topics related to: laser light, art form, sound waves, white light, national geographic
  • Back And Forth Stimulated Emission
    1,080 words
    The light from lasers differs from ordinary light in several important aspects. Ordinary light from a light bulb travels randomly in all directions (unless the bulb is equipped with an integral reflector that directs the light). The light is thus incoherent. Even when incoherent light is directed with a reflector, it still spreads rapidly. The light from a laser is temporary and spatially coherent. This means that all of the wave-fronts of light are lined up in time and space (see Diagrams). The...
    Free research essays on topics related to: stimulated emission, back and forth, electrical power, laser, laser beam
  • Solid State Lasers Beam Of Light
    1,373 words
    A laser (LAY zum) is a device that produces a very narrow beam of light. This is called coherent light. It is formed from producing light at equal wavelengths in phase. The result is a beam of light that does not stray from it? s path. Conventional light bulbs produce incoherent light. This form of light diffuses immediately upon radiation from its source. The size of a laser beam varies greatly. Some lasers produce beams that are small enough to fit 200 beams in an area the size of a pinhead. T...
    Free research essays on topics related to: stimulated emission, laser beam, solid state lasers, gas lasers, beam of light
  • Bits Per Second Speed Of Light
    1,533 words
    Mr. Cruz Physics honors Lasers Raphael Radon Mr. Cruz Physics honors Through out the past few years lasers have been going through many innovations thus having a tremendous impact on technology. What is a laser? A laser is a special kind of light. The initials stand for (L-A-S-E-R light amplification by stimulated emission of radiation) Only the light that is commonly know to us is the type that spreads out. Laser light is in a straight beam. There are many types of lasers, some make holograms, ...
    Free research essays on topics related to: speed of light, gas lasers, bits per second, laser light, laser
  • Stimulated Emission Nobel Prize
    1,216 words
    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 contain...
    Free research essays on topics related to: nobel prize, laser light, enemy territory, stimulated emission, carbon dioxide
  • Solid State Lasers Funk And Wagnalls
    1,294 words
    people see Lasers 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, Charle...
    Free research essays on topics related to: stimulated emission, fiber optic, gas lasers, funk and wagnalls, solid state lasers

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