Monday, June 8, 2015

quantum mechanics - Photoelectric effect – What is the probability of a photon absorbtion by an electron?


Is it correct that



each photon above threshold frequency is absorbed by an electron



What is the probability of a photon absorbtion by an electron? Can a quantitative example be given?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...