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watching
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23 Nov 2019
<p>At 510 nm, the wavelength of maximum sensitivity of the human eye, the dark-adapted eye can sense a 100ms long flash of light of total energy 4.0*10^-17 J. (Weaker flashes of light may be detected, but not reliably.)<br /><br />If 60% of the incident light is lost to reflection and absorption by tissues of the eye, how many photons reach the retina from this flash?</p>
<p>At 510 nm, the wavelength of maximum sensitivity of the human eye, the dark-adapted eye can sense a 100ms long flash of light of total energy 4.0*10^-17 J. (Weaker flashes of light may be detected, but not reliably.)<br /><br />If 60% of the incident light is lost to reflection and absorption by tissues of the eye, how many photons reach the retina from this flash?</p>
Jean KeelingLv2
14 Oct 2019
