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A CO2 laser is used in LASIK surgery by emitting a 1 ms pulse of infra-red...

A CO2 laser is used in LASIK surgery by emitting a 1 ms pulse of infra-red light with λ=1060 nm. As a result, 1cm^3

of tissue has been evaporated by heating it to 100°C. Calculate the number of photons employed by this

effect, assuming that the density and the heat of vaporization of the tissue is the same as that of water (2260

J/g).

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