Optical tweezers use light from a laser to move single atoms and molecules around. Suppose the intensity of light from the tweezers is 1000 W/m², the same as the intensity of sunlight at the surface of the Earth. (a) What is the pressure on an atom if light from the tweezers is totally absorbed? Pa (b) If this pressure were exerted on a helium atom, what would be its acceleration? (The mass of a helium atom is 6.65 x 10-27 kg. Assume the cross-sectional area of the laser beam is 6.65 x 10-29 m².) m/s²
Optical tweezers use light from a laser to move single atoms and molecules around. Suppose the intensity of light from the tweezers is 1000 W/m², the same as the intensity of sunlight at the surface of the Earth. (a) What is the pressure on an atom if light from the tweezers is totally absorbed? Pa (b) If this pressure were exerted on a helium atom, what would be its acceleration? (The mass of a helium atom is 6.65 x 10-27 kg. Assume the cross-sectional area of the laser beam is 6.65 x 10-29 m².) m/s²
Chapter16: Electromagnetic Waves
Section: Chapter Questions
Problem 62P: Suppose the maximum safe intensity of microwaves for human exposure is taken to be 1,00 W/m2. (a) If...
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