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The Doppler Effect is the strectching and compressing of waves caused by the movement of the source. Put more simply, when an object emits a sound - say a van beeping its horn it produces a sound of a ...

There are two postulates of special relativity:

1. The laws of physics are invariant in all inertial frames of reference.

What ...

Charged particles are fired into a magnetic field (perpendicular to the motion of the particles). Using Fleming’s left hand rule, a magnetic force acts centripetally – such that the charged particles e...