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Consider a wavelength of 550nm travelling through 150km of air. Assume the number density of molecules...

Consider a wavelength of 550nm travelling through 150km of air. Assume the number density of molecules to be 2.5 × 10^25 ?-3. Use this information to determine the following:

a) Calculate the attenuation coefficient (β);

b) Determine the attenuation length (1/β);

c) Determine the relative reduction in intensity of this wavelength;

d) Convert this to percentage reduction in intensity; and

e) How far must the wave travel to reach 1% reduction in intensity?

Science   Advanced-Physics   
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