What is a high power laser beam?
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A laser beam emits a cylindrical beam of light with a radius of1.0x10^-3m. The power of the beam is 1.2x10^-3W. What is theintensity of the laser beam?Please explain why, not just give an answer. Thanks!
A laser is used in eye surgery to weld a detached retina back intoplace. The wavelength of the laser beam is 517 nm, while the power is1.25 W. During surgery, the laser beam is turned on for 0.0539 s. Duringthis time, how many photons are emitted by the laser?