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Electromagnetic Spectrum

explanatory Essay
2181 words
2181 words
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The electromagnetic spectrum is made up of six different types of waves. Radio waves, Microwaves, Infrared waves, Visible light, Ultraviolet light, X-rays and Gamma rays. The radio waves are used to transmit radio and television signals. The infrared waves are used to tell temperature of areas. Visible light is all the colors that we can see. Ultraviolet light can help things grow but to much can cause diseases such as skin cancer. X-rays are used as a tool to find broken bones or take pitchers of our sun. Gamma rays are used in medical science but they are oftenly used to produce images of our universe. If you would like to know more about the spectrum keep reading.

The electromagnetic spectrum is the organization of six diferent wavelengths. Each having their own use. The spectrum in order from longest to shortest wavelengths is: Radio waves, Microwaves, Infrared waves,
Visible light, Ultraviolet light, X-rays and Gamma rays. The most familiar forms of the spectrum are radio waves and light waves. The reason for that is, that we listen to the radio or use its waves more often than we think. For instance cell phones work off of radio waves.
Light waves are used more often than we think because with out light we wouldent posibly be able to see color on any thing, or we wouldent have photosynthisis which sunlight is used for. The term spectrum refers to light in general or the whole range of electromagnetic radiation. The electromagnetic field was found in the 19th centurie. It was founded by
James Clerk MAXWELL of Scotland and published in 1865. The field is described in two quantities the electric component E and the magnetic component B and both charge in space and time. This meaning electric / magnetic / spectrum.
Radio waves are used to transmit radio and television signals.
Radio waves can send sounds at the speed of light. The range of radio waves can be less than a centimeter to tens or even hundredths of meters.
Radio waves are produced by coherent motion of electrons such as the antenna of a radio transmitter. Coherent motion is the focused pattern of the waves, in this case. The radio waves are also produced by charged particles orbiting in magnetic fields. As you already know we have FM and
AM radio waves. Well an FM radio station at 100 on the radio dial (100 megahertz) would have a wavelength of about 400 meters. A radio wave can also be us...

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...cy.
Nanometer- One billionth.
Angstroms- Ten billionth.

Bibliography:
Internet:
Http://hurlbut.jhuapl.edu/NEAR/Eucational/lessonSpectrum/lpspec.html http://www.mymate.demon.co.uk/em.htm http://www.physics.gmu.edu/classinfo/astr103/CourseNotes/rad_wave.htm http://www.li.net/~stmarya/stm/gamm_1.htm.. http://cossc.gsfc.nasa.gov/cossc/nasm/VU/overview/whatare/whatare.html
Books:
Grolier Encyclopedia, 1996
ElectrIcity and Magnetism, Prentice-Hall, 1993
Scott Forman, Physical Science Bell and Howell Company 1977
Readers digest-How In The World Library of congress, 1990
Adventures In Scuba Diving, NAUI, 1996
Eric M. Rogers, Physics For The Inquiring Mind Princeton, New Jersey
Princeton University Press, 1960
Magazine:
Global Communications OMNI, November 1990
Acknologements:
I would like to thank Mr. Rhan for giving me the time to work on the electromagnetic spectrum during his math class period. And I would also like to thank that stupid voice in my head for keeping me on task, against my will. I cant forget good old Mr. Garcia for giving me such a short time to finish this but the confidence it took to succeed as well. And my dear old dad since he asked me to thank him too.

In this essay, the author

  • Explains that x-rays are used to find broken bones or pitchers of cancer.
  • Explains that we listen to the radio or use its waves more.
  • Describes am radio waves and an fm radio station at 100 on the radio dial.
  • Explains that the wave is used to heat food.
  • Explains that the reason we can see all the colors we do is simple.
  • Explains that if we didn't have the ozone layer, the reason for that would be that without it.
  • Analyzes how the suns beam on to eros telling us what elements are on it.
  • Explains that the study will be used to study the elements 10 to 20 cm below the surface of eros.
  • Explains that when they bring their dive light down, they can see the blues and grays.
  • Describes the advantages of having a cell phone in one's pocket.
  • Asks readers to do some more studying on this topic.
  • Sincerely thanks mr. rhan for giving them the time to work on the project.
  • Explains the use of infrared goggles in the dark to tell us what is putting off heat. it is also used in space.
  • Explains that the sun is more visible, while the moon is less light, making it harder to see the color. now they are a scuba diver and when they go under water the last color they see is blue.
  • Explains that the lesser the wattage the less color it will show. when the sun shines on your shirt part of its ray is absorbed giving it a color.
  • Explains that if a plane flight is delayed, you will be able to call them to let them know that you are running late.
  • Explains that doctors had to deal with the problem in other ways unlike now when doctors can do an x-ray and know how to fix it.
  • Narrates how they thank the stupid voice in their head for keeping them on task, against their will, and good old mr. garcia for giving them such a short time to finish this but the confidence it took to succeed.
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