Electromagnetic Spectrum - MIT Haystack Observatory

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Wavelength Units Nanometer (nm) preferred 10 9 nanometers in 1 meter Angstrom 1 Å = 10 -10 m = 0.1 nm Visible Light <strong>Spectrum</strong> 400-700 nm or 4000 to 7000 Å -Our eyes are most sensitive to the middle range 550 nm (yellow –green)_ -Sun emits most of its electromagnetic energy within this range Radio Waves - Range in size from .001 meters to thousands of meters
Radio waves and visible light are the only wavelengths transparent to the atmosphere, so observations can be made from the Earth’s surface in these wavelengths A part of the infrared spectrum is visible from earth. A very small amount of Ultraviolet rays reach the Earth and can give you a sunburn. Gamma rays, x-rays, and ultraviolet radiation must be recorded by satellites above the Earth’s atmosphere.
Page 2 and 3: Radiation -Transfer of energy throu
Page 4 and 5: Amplitude - maximum departure from
Page 6 and 7: Comparison of wave properties
Page 8 and 9: Waves are formed as a result of a d
Page 10 and 11: Electromagnetic Radiation is carrie
Page 12 and 13: Size of Electromagnetic Spectrum of
Page 16 and 17: Atmosphere window of electromagneti
Page 18 and 19: Intensity (Brightness) of Radiation
Page 20 and 21: Again, you can see that as an objec
Page 22 and 23: By measuring the wavelength at the
Page 24 and 25: Wien’s Law (Peak Wavelength) λ =
Page 26 and 27: Look at the peak wavelength emissio
Page 28 and 29: 3 Types of Spectra - Continuous, Em
Page 30 and 31: Continuous Spectrum - Spectrum is c
Page 32 and 33: Absorption Lines - Low density cool
Page 34 and 35: Radio Waves -Radio waves viewed on
Page 37 and 38: Basic radio wave technology - Waves
Page 39 and 40: Radio Astronomy - The transmitters
Page 41: Comparative view of radio and visib

Electromagnetic Spectrum - MIT Haystack Observatory

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