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unit 3 questions - Through spectroscopy one call tell how...

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The wavelength response of the human eye matches so well to the visual window of Earth's atmosphere, because a large portion of the waves of energy of the electromagnetic spectrum that make it through the atmosphere are of the visible spectrum. Radio waves are the majority, but they are not visible to the human eye. The visual spectrum is of a much longer wavelength. Therefore, it makes it through the opaque outer-most layer of the atmosphere. Our eyes respond to both color and light intensity. The frequency of the waves determines our eye’s response. Therefore, our eyes respond to the frequency range of 780-390nm. http://rigel.csi.cuny.edu/robbins/LECTURES/Chapter%2006.pdf http://www.glenbrook.k12.il.us/gbssci/Phys/Class/light/u12l2b.html
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Unformatted text preview: Through spectroscopy, one call tell how far away an object is (distance) through the use of a process called spectroscopic parallax. This is done through analyzing the luminosity and the spectral class. Luminosity is found by looking at the widths of its spectral lines. Absolute and apparent magnitudes are contrasted to find the distance of the object. Motion can be determined using the Doppler effect. The Doppler effect is the apparent change in the wavelength of radiation caused by the motion of the source. Temperature can be found out through the observation of spectral lines. [1] [1]http://en.wikipedia.org/wiki/Astronomical_spectroscopy...
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