The Millikan Oil Drop experiment was used to determine the charge of an electron, with the use of: a. Negatively charged oil drops due to the atomizer spray bottle b. A parallel plate set up with a fixed voltage c. Knowledge of normal forces and electric forces acting on the oil drops d. All of the above were used e. Neither a, b, or c, were used

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Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.