Refracting Lasers? I Wrote This For 8th Grade Science Fair. Its About Lasers Basically.

1610 words - 6 pages

Refracting Lasers?Lasers are very important in our world today; but not too long ago, we did not have them! The main reason they did not think of them before the 1900's was because scientists did not know about stimulated emission. But in the early 1900's Albert Einstein was the first to describe this process. The next major breakthrough in lasers was when Charles H. Townes created a population inversion, which is needed to create stimulated emission in an instrument that amplified microwaves called a maser in 1954. The 1950's was when the basic laser started to take shape. Many men like Townes, Arthur L. Schawlow, Alexander M. Prokhorov, Nicolai G. Basov, and Gordan Gould all contributed to the basic design. The one person who did finally invent the first laser was Theodore H. Maiman of the United States in 1960. Maiman's laser used a ruby rod as its active medium (World Book Millennium, 2000, p. 86). It was so bright that it "outshone" the sun (Olesky, 1986). Not to long after, in the same year, Ali Javan, an American physicist, constructed the first working gas laser. Then in 1962 three separate teams of U.S. scientists operated the first semiconductor lasers. Subsequently, in 1966, the American physicist Peter Sorokin built the first working dye laser. Of course there have been other smaller advances since then too (World Book Millennium, 2000, p. 86). So down to the problem that needs to be answered. Will a laser refract if it goes through a prism?First to understand a laser you need to know that there are two kinds of light. One is ordinary light, an example is white light, and there is coherent light, an example of that is laser light. Ordinary light is light that comes from things like the sun, light bulbs, and fire. White light contains many different wave lengths (Olesky, 1986) that are all different colors (McKie, 1983) and that are all "out of step" with each other. As a result, ordinary light spreads quickly and weakens. Coherent light, on the other hand, is made of the same colors and wavelengths that are "in step" with each other. Because the waves are "in step" with each other they can keep their size, direction, and strength over long distances (World Book Millennium, 2000, p. 86).Lasers come in many different sizes. Some are as large as a football field. While others are as small as a grain of salt! Some laser beams are visible, despite the fact that some are invisible (World Book Millennium, 2000, p. 86).There are three basic parts to a laser: the power source (often electricity, sometimes strong source of regular light or even another laser), active median (material in which laser beam is generated, it can be solid: ruby, liquid: dye, or gas: carbon dioxide), and the feedback mechanism (made of two mirrors placed on each end of the tube where the active median is held. The mirrors will amplify the intensity of the laser beam produced (McKie, 1983).To know how a laser works you must first know (1) what role atoms play in the...

Find Another Essay On Refracting Lasers?-i wrote this for 8th grade science fair. its about lasers basically.

This is an essay I wrote for a porfessional ethics class about home schooling and its effects on childrens social behavior.

661 words - 3 pages children. As a recent research study, done by Dr. Brian Ray, shows: "On average, home schooler's outperformed their public school peers on standard achievement tests by 30 to 37 percentile points across the board on all subjects."("Home Schooling Achievement," pars. 1). To say the least, this is incredible data. As for college enrollment of home schooled children, it rates about the same as public schools, however, (as expected) home schooled children

This is an essay I wrote for Ap English that has minor errors but still recived a good grade.

945 words - 4 pages Jeffrey BoatengThis an essay that I had to write for Ap English it was based on the following quote by Teiresias in Antigone. Think: All men make mistakes, But a good man yields when he Knows his course is wrong, And repairs the evil: The only crime is pride.I had to write about weather this assertion was true based on examples from reading, observation

I wrote this about Act 3 Scene 5. I got a grade B so hope this helps. It is on Romeo and Juliet

1395 words - 6 pages from Verona and he joins Juliet on their wedding night. During this scene, Romeo leaves Juliet for Mantua after spending the night together; Juliet is informed on the arrangement for her to marry Paris, and as the scene progresses, Juliet's family, one by one, turn their back on her. This scene would potentially make the audience take a different view on all the characters; see a different side to them. For example, learn more about family

EDGAR ALLAN POE: LIFE AND WORKS This is about the life and the works of the poet edgar allan poe, i basically describe his life and how it effected what and how he wrote.

1341 words - 5 pages to school at Richmond University. While there he gambled playing cards and amounted a debt of two thousand dollars. There is also a discrepancy as to what happened after this, Bloom says that he got kicked out of the university due to the gambling debt, while Quinn says that Allan refused to give him the money and withdrew him. When he came back home he ran away to Boston. Poe than joined the First Regiment of Artillery, he enlisted for a five

Cover Girls         When I was in first grade I wrote,

1630 words - 7 pages Cover Girls When I was in first grade I wrote, in a letter to myself that "In the year 2000 I will be 17 years old. I will have long blonde hair, and a stamp will cost 25 cents " Prior to that letter I had been told by a peer that blond hair equals beauty. From that day forth I would sit on the sunny side of the car. This was a vein attempt to lighten my dark locks. At age six I realized I was born with a disadvantage because I had brown

This is a literary analysis that I wrote in the 11th grade on the book "Sonny's Blues".

1528 words - 6 pages watching the streets." (Page 11) When Sonny's mother hums this hymn, it alleviates some of her anxiety."I'm going to be a musician,' he said. For he had graduated, in the time I had been away, from dancing to the jukebox to finding out who was playing what, and what they were doing with it, and he had bought himself a set of drums." The narrator doesn't realize that music, the lesser of two evils, is Sonny's alternative escape method and is far

the uses of lasers and about lasers

774 words - 3 pages being used in a variety of ways. This includesentertainment, military, communication, businesses, measurement, cutting,and more.Measurement: Lasers have become an important part of measurement. A laseris the fastest way to measure long distances. This use can be applied inconstruction work and astronomy.Cutting: A laser is also great for cutting objects. It can get to thosehard to reach places by the use of mirrors to bend the beam of light

"Waiting for the Rain" by Sheila Gordon. Not very well written, but I wrote it in the 7th Grade so forgive me :D

518 words - 2 pages people, because it is kind of slow moving, and has a pretty bad ending. However, despite these not so good traits, it really is well written, and does flow smoothly throughout the story. It shows a good look at apartheid, but it doesn't show exactly how horrible the apartheid really was. It almost seems like the book closes its eyes to the actual horrors of apartheid. And I'm sure there is a plethora of books out there that paint a better picture of apartheid. Waiting for the Rain has a good storyline, but it could have been carried through a little bit better. For these reasons I would not recommend Waiting for the Rain, by Sheila Gordon.

Prescription Drug Abuse - 10 page paper that I wrote for a Toxicology class in my Sophomore year. Excellent resource with bibliography for anyone needing a little help getting started! Grade: 300/300

2864 words - 11 pages patient would own their syringe and when they ran out of morphine, they could easily go back for more. This method of unregulated treatment and administration of morphine led to addiction, forcing the patient to return for stronger and heavier doses of morphine to relieve their pain. Today, we have pain-relieving drugs such as codeine, which must be converted into morphine before it can take effect in the body. Only about 10 percent of the codeine

Another paper I wrote last semester for MS 2. This one is about creationism v evolutionism.

1108 words - 4 pages different dimension and universes, and at the same time in theory invalidates its own laws by other ones one can only wonder and try to find the most reasonable explanation. Biological evolution has the strongest support by measurable science and is proving itself right day by day as new evidence becomes available, and for me believing in something I can scientifically prove is easier and more satisfactory.

Almost Everything You Should Know About Martin Van Buren (Did this in 8th grade but it's def. highschool/college material)

1334 words - 5 pages idea of, and forced the creation of, the Erie Canal in New York, which helped the U.S. grow.The Wars That Martin Van Buren Had To Face:Van Buren had to deal with the Seminole Indian War in Florida. This conflict caused the government to pay 40 - 60 million dollar for the war and caused thousands of lives on both sides to be lost. While this war was going on, there was another war that Van Buren had to handle, the undeclared Aroostook War. This

Similar Essays

Review Of Literature Wrote This In 9th Grade For Science Fair. Got All The Way To State Wit It Tho So Be Careful. Its About Marigolds And What The Effects Of Zinc, Borax, And Citric Acid Has On Them.

1562 words - 6 pages (Plants, p. 2904)Marigolds are popular half-hardy annuals that are grown for their bright, wide flowers and bushy mounds of lacy, green leaves. The African or American Marigolds (Tagetes erecta) are large with 18-36 inch long stems. They have large flowers about two to four inches wide that are yellow, orange, or bicolored. The French Marigolds "are much daintier", with small single flowers that are also about two to four inches wide. They come

Review Of Literature This Is The Paper I Wrote For Science Fair In 7 Grade. The Subject Is: "What Is The Effect Of Coca Cola On Marigolds", So It Has Info About Coke And Marigolds.

1196 words - 5 pages Review of LiteratureDid you know that Coca-Cola will eventually rot your teeth away and eat atyour stomach? Also did you know that if you won't drink any kind of pop you willhave more energy? Well it's all true! I will now tell you some facts about plants,marigolds, and Coca-Cola.Plants are organisms that, like everything else living, are made up of cells andthey are in the Plantae Kingdom (Gale encyclopedia of science, p. 2893-2894

Science: 8th Grade Study Guide Essay

1039 words - 4 pages Chapter 1Experiment: this is how you can solve a problemHypothesis: a guessVariable: what you use to test your hypothesis to see if it holds trueTrial: to tryMaterials: what you needData Tables: charts, tables, graphs/anything you use to organize data(into a table)Safety: to prevent accidentsScience: trying to understand the world around youChapter 8Neutron: *think*: neutron/neutral (no charge)Proton: positive charge *think*proton

Acid Rain. This Is A Research Paper I Did For My Science Fair Project.

806 words - 3 pages of the solution. One of the first steps is to understand the problem and its solutions.Individuals can contribute directly by conserving energy, since energy production causes the largest portion of the acid deposition problem. For example, you can turn off electrical appliances when you're not using them and use energy efficient appliances, such as lighting, air conditioners, heaters, refrigerators, washing machines, etc. Instead of using a car