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Electromagnetic Spectrum Poster

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Betty Mo

on 24 May 2011

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Transcript of Electromagnetic Spectrum Poster

Electromagnetic Spectrum Poster Why is it called the Electromagnetic Spectrum? By: Betty Mo It is called the electromagnetic spectrum because it is usually referred to as a visible light, which is: red, orange, yellow, green, blue and violet. Though, light belongs to a much broader spectrum, which is also known as the electromagnetic spectrum. In the electromagnetic spectrum it includes the order of increasing the frequency, the radio waves, infrared waves, visible lights, ultraviolet rays, x-rays and gamma rays. For each one, state the wavelength in meters: Radio-103
Microwave- 10-2
Infrared- 10-5
Visible- 10-6
Ultraviolet- 10-8
X-Ray- 10-10
Gamma Ray- 10-12 Which has the longest wavelength in meters? The Radio has the longest wavelength in meters.
The wavelength of the Radio is 103, as shown in
the diagram. Which has the shortest
wavelength in meters? The Gamma Ray has the shortest
wavelength in meters. The Gamma
Ray’s wavelength is 10-12 in meters. Which color has the longest wavelength? Red. As shown on the bottom, you can
see that red has the longest wavelength. Which color has the shortest wavelength? Violet. Violet would have the shortest wavelength because as shown here in the diagram, it tells that the wavelength is shorter and it is Ultraviolet. It means that we can feel it but we cannot see it, it has a strong energy but short wavelength. For example, sun light, it is an ultraviolet, we cannot see the sunlight but we can feel the heat on our skin. What can be used to detect each type of wave? Radio- To detect radio, a device named Antennas is used to detect radio wares.
Microwave- Microwave is detected in a similar way to a radio. It is detected through a microwave antenna. Infrared- To detect infrared, a CCD chip can be used.
Visible- Carbon nanotubes can be used to detect visible lights fully.
Ultraviolet- Any films that are sensitive to visible light, can be used to detect ultraviolet.
X-Ray- Same goes to x-ray; any films that are sensitive to visible light can also be used to detect x-ray.
Gamma Ray- Scintillation detectors are used to detect gamma ray’s. Here is an example of various types of Antennas. Which of these radiations canwe detect with our senses? We are able to detect visible light, that is
how we see things. Other than that we
basically rely on scientific instuments in
order for us to detect and to measure
radiations. What animals can detect radiations, that we can’t and how do they detect it? Rattlesnakes and other pit vipers are able to detect infrared visions. They would use their eyes to see during the day and at night; they use their infrared sensory organs to detect their surroundings for good. Write one or more uses that humans have found
for each type of radiation? Radio- it is mainly used for communication. One example would be police radio communicators, television transmissions and military aircraft radios.
Microwave- The first example of a microwave being used my humans would be, it is used to cook many types of food and the second example would be those traffic speed cameras.
Infrared- Remote controls for TV are uses that humans have found for infrared. Also it could be used to see in the dark.
Visible- we use it to see things and also by using laser, light bulbs can be worked.
Ultraviolet- we use it to get a suntan using the UV light.
X-Rays- It is used to determine human bones. It is usually used in hospitals, so doctors can take an x-ray of the patient and see if their bones are all right or not.
Gamma rays- it is used to kill cancer cells without going through surgery. It is called “Radiotherapy”. When was each type of radiation detected and when was it first used? Radio- Radio was detected in 1930 by Milky Way. It was also first used then when Karl Jansky was observing the radiation coming from Milky Way.
Infrared- In 1800, infrared was first discovered by Sir William Herschel. It was also firstly used then, to detect forms of light that we are not able to see with out eyes.
Visible- Visible was first detected by Roger Bacon. Though, Isaac Newton was the first used it.
Ultraviolet- In 1801, a German physicist Johann Wilhelm Ritter discovered ultraviolet.
X-Rays- in 1895, a German physicist named W.C Roentgen detected the x-ray.
Gamma rays- it was first detected in 1967 by the gamma-ray detector that was aboard the OSO-3 satellite. Bibliography: "The Electromagnetic Spectrum." Gondar Design Science. Web. 09 May 2011. <http://www.purchon.com/physics/electromagnetic.htm>.
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