The wavelengths of light emitted by a firefly span the visible spectrum but have maximum intensity near 550 nm. a typical flash lasts for 100 ms and has a power of 1.2 mw. if we assume that all of the light is emitted at the peak-intensity wavelength of 550 nm, how many photons are emitted in one flash?
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, so the number of photons emitted in one flash is
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