Light
LIGHT: A FUNDAMENTAL FORCE IN OUR WORLDIf asked what light is, one could say that it's one of the most basicelements of our world and our universe as we perceive it. It is throughsight that we receive 90% of our information. It is through the use oftelescopes aiding the naked eye that we are aware of the heavenly bodiesaround us. It is through light that the energy from the sun is transferredto us. The sun's energy supports the food chain; plants use it to turnwater and CO2 into energy usable by other organisms. Solar energy was alsoused, indirectly, to produce all of the fossil fuels that we consume daily.Since light is such a basic part of our existence, we should have a basicWhat we call light, the intangible, powerful force that powers our world,is somewhat hard to define in real terms. It shares properties with bothparticles and waves. It follows the same rules as a wave does--it moves ina regular fashion, in a perfect sine wave at a certain frequency. Ittravels in a straight line, and is subject to refraction. All of thesecharacteristics are found in waves of any type, from radio frequency waves,
Thus,light indeed has a wealth of applications. Laserlight is being used in surgery. If one starts afire, it produces light and heat. The plants, which are at the bottom of the food chain, supplyenergy to all other organisms. Also, lasers are being used to produceholographic images, both for industrial and commercial markets. ) The light and heat are a result of achemical reaction, the combining of oxygen with the carbon in the wood. Light, however, also exhibits qualitiescharacteristic of particles such as neutrons and protons. ) Optical components incomputers are starting to see use. The energy, which left as light and heat, was producedwhen electrons dropped in energy levels during the reaction. ------------------------------------------------------------------------**Bibliography**none. Holographicpictures can show an object three dimensionally, and in great detail. Laser light is,therefore, of all one color. Still more controlled is the laser,which puts out its photons in a single frequency. When these return to their normal, or "ground" state, energy isproduced in the form of electricity. The applications oflight in the present are nothing compared with what could be gained if wecould understand this strange mechanism; it may someday be the key tosolving our energy problems, or unlocking the secret of the universe.
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Acceptance Essays
