Electromagnetic Spectrum - MIT Haystack Observatory

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Wien’s Law (Peak Wavelength) λ = 0.29 cm/T o K Examples 1. Your body emits radiation at 300 o K. What would the size and type of your emitting wavelength be? λ = .29cm/300 λ = .001 cm infrared radiation 2. What is the surface temperature of the sun if its peak wavelength is 500 nm ? 500 nm = .29 cm/T o K .29/.00005 = 5800 o K
Stefan-Boltzmann Law -As an object’s temperature increases, the total energy it radiates (over all the frequencies) increases by a power of four. Total energy radiated is proportional to temperature 4 Example - Doubling the temperature will cause the total energy radiated To increase by a factor of 16.
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 14 and 15: Wavelength Units Nanometer (nm) pre
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 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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