Tuesday, May 1, 2018

visible light - Does any material glow, under appropriate conditions?


Given a high enough temperature, or a high enough electrical field, can we make every material emit visible light?




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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 \...