Interstellar dust is found to be at a temperature of 1000 K. At what wavelength will be the radiations?
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A: We can apply Wien's law.
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- Imagine a photon that was determined to have a wavelength of 150 nm. Remembering that the speed of light is 3*10^8 m/s, what is the frequency of that light in units of Hz? (Provide only the number with commas to help count off orders of ten accurately, do not use scientific notation)A tungesten filament is heated to 3000.0 ∘∘C. Calculate the wavelength for which the emission spectrum of the filament is maximum assuming that it fully absorbes light at all wavelengths.Why is the gravitational shift in photons very hard to observe?
- Give the peak wavelengths, λpeak, for each of the following cases. State which portion of the electromagnetic spectrum it falls within. The red giant star Betelgeuse, with T = 3600 K. (In nm.)A blackbody radiator in the shape of a sphere has a surface area of 152 m. It has a temperature of 1200 K how much energy does it emit per second?