28_InstSolManual_PDF_Part8

# 28_InstSolManual_PDF_Part8 - 28-8 Chapter 28 Reect As l...

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Reflect: As increases the photon energy decreases. Even in these low power applications the number of photons per second is very large. 28.30. Set Up: The energy of each photon is The power is the total energy per second and the total energy is the number of photons N times the energy E of each photon. Solve: so so 28.31. Set Up: Visible light has wavelengths from about 400 nm to about 700 nm. The energy of each photon is The power is the total energy per second and the total energy is the number of photons N times the energy E of each photon. Solve: (a) 193 nm is shorter than visible light so is in the ultraviolet. (b) (c) so Reflect: A very small amount of energy is delivered to the lens in each pulse, but this still corresponds to a large number of photons. 28.32. Set Up: The energy of each photon is The power is the total energy per second and the total energy is the number of photons N times the energy E of each photon. The photon beam is spread over an area with Solve: (a) and (b) The number of photons in a pulse is so
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