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United States (324,008)
Physics (56)
PH 122 (46)
Lecture

Heisenberg uncertainty principle, quantum mechanics, fluorescence

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Department
Physics
Course
PH 122
Professor
Brian Jones
Semester
Spring

Description
4 April A spherical virus has a diameter of 50 nm. It is contained inside a long, narrow cell of length 0.0001 m. What uncertainty does this imply for the velocity of the virus along the length of the cell? Assume the virus has a density equal to that of water. 4 Δx Δp ≥ 4π Δp = mΔv m = ρV Heisenberg uncertainty principle h ΔEΔt ≥ 2π 2 E = mc Quantum mechanics limits the proton to two possible energies which correspond to two possible orientations, aligned with or opposite the magnetic field. μproton1.41 x 10 -26J/T What is the proton energy corresponding to a spin flip for a proton in a 1.0 T magnetic field? -26 -26 E = μB = 1.41 x 10
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