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Solid State Lasers Back And Forth
2,014 wordsLaser 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...
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Food Chain Laser Light
895 wordsLIGHT: A FUNDAMENTAL FORCE IN OUR WORLD If asked what light is, one could say that it's one of the most basic elements of our world and our universe as we perceive it. It is through sight that we receive 90 % of our information. It is through the use of telescopes aiding the naked eye that we are aware of the heavenly bodies around us. It is through light that the energy from the sun is transferred to us. The sun's energy supports the food chain; plants use it to turn water and CO 2 into energy ...
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Amount Of Energy Stimulated Emission
1,113 wordsThere 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...
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Ball Bearings Laser Light
1,919 wordsYour universe, as we have suggested many times, as we " ve suggested already this morning, is but one universe among many. It is relatively a small universe - not to suggest that you should feel badly... {laughter}... for despite the consensus reality that bigger is better, despite the male-dominating energy and the comparative energies that say "bigger is better, " your universe, though relatively small, is not at all diminished by its size. Now we know the word universe by its definition means...
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Solid State Lasers Gas Lasers
393 wordsThere are many different types of lasers. The laser medium can be a solid, gas, liquid or semiconductor. Lasers are commonly designated by the type of lasing material employed: Solid-state lasers have lasing material distributed in a solid matrix (such as the ruby or neodymium-yttrium aluminum garnet (YAG) lasers). The neodymium-YAG laser emits infrared light at 1, 064 nanometers (nm). A nanometer is 1 x 10 - 9 meters. Gas lasers (helium and helium-neon, He Ne, are the most common gas lasers) ha...
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Solid State Lasers Beam Of Light
1,749 wordsL 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...
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Three Dimensional Laser Light
2,345 wordsI 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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Three Dimensional Laser Light
1,264 wordsNearly everyone is fascinated by holograms. The often brightly colored three-dimensional images are constantly showing up in more and more places. From the security holograms on CDs and computer software, to hologram artwork, they are becoming ever more popular. But few people realize just how incredible holograms are. The Hungarian-born scientist Dr. Dennis Gabor first described the principles and technique of holography in 1947 (he received the 1971 Nobel Prize in Physics for this contribution...
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Sound Waves Laser Light
2,160 wordsWhile 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...
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Solid State Lasers Beam Of Light
1,373 wordsA 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...
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Bits Per Second Speed Of Light
1,533 wordsMr. 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, ...
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Stimulated Emission Nobel Prize
1,216 wordsThe 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...
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Solid State Lasers Funk And Wagnalls
1,294 wordspeople 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...
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