Saturday, March 10, 2012

How do you find the wavelength of emitted thermal radiation?

Matter is falling in a black hole. As it does so it gets compressed and heated to 106K. What is the wavelength of the emitted thermal radiation and at what part of the spectrum would you search for black holes?How do you find the wavelength of emitted thermal radiation?
106 degrees kelvin is pretty cold (-167 degrees Celsius = -269 degrees Fahrenheit). Did you mean to type 10^6 K? And how am I supposed to know that the matter is heated to any particular temperature? Also, why would I search at just the peak of the spectrum; wouldn't it be much more informative to look at several different frequency bands?



Three words: Wien's displacement law.

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