Saturday, August 26, 2017

optics - How the amplitude of light increases its brightness?


Amplitude is the maximum value reached by a wave.



In case of the light wave how the bigger amplitude gives more brightness/intensity ?




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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 \...