Sunday, November 1, 2015

Why is Cerenkov Radiation faint blue in colour?


In 1934, Cerenkov discovered that electrons moving with large constant velocities through polarizable media caused a faint bluish glow. 'Why is the radiation blue in colour? How can a charged body moving with constant velocity emit an electromagnetic radiation?'




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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 \...