Electromagnetic Spectrum Essay

1997 words - 8 pages

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 used to create images such as portable TVs. Radio waves with
wavelengths of a few centimeters can be transmitted from a satellite or
airplane antenna. The reflected waves can be used to form an image of the
ground in complete darkness or through clouds. This would be how spy
satellites work or how we take pictures of the planets surface.
Following after radio waves would be the magnificent microwave.
The microwave makes up a very small part of the spectrum although it is
widely used throughout house holds across the world. Microwaves range from
a few centimeters to 0.1 cm. The wave is used to...

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