laser eye surgery is carried out by delivering highly intense bursts of energy using electromagnetic waves. a typical laser used in such surgery has a wavelength of 190 nm and produces bursts of light that last for 1 ms. it delivers an energy of 0.5 mj to a circular spot on the cornea with a diameter of 1mm. assuming the energy of a single pulse is delivered to a volume of the cornea 1 mm3, and assuming the pulses are delivered so quickly that the energy deposited has no time to flow out of that volume, how many pulses are required to raise the temperature of that volume from 20c to 100c?

Question

anonymous · Answer

Need to assume a specific heat for the cornea. Probably that of water is OK. Calculate the mass of the cornea spot and the amount of energy needed to raise it 80oC, then divide that by the energy per pulse.