A heat lamp produces 22.9 watts of power at a wavelength of 22.90 μm. How many photons are emitted per second?
A heat lamp produces 22.9 watts of power at a wavelength of 22.90 μm. How many photons are emitted per second? (1 watt = 1 J/s)
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1] Take one second as your basis.
2] E = h c/wavelength, so find the energy of one photon
3] Divide 22.9 J by the energy of one photon