Dirac was working to solve why some particles can move faster than the speed of light. Scientists had equations for slow-moving electrons, but subatomic particles remained a mystery. The professor ...

n=\frac{v_{1}}{v_{2}}\) In the equation above: \(n\) is the refractive index of the material \(v_{1}\) is the speed of light in a vacuum \(v_{2}\) is the speed of light in a material The bigger ...

A person fires a starting pistol. A distant observer stood 200 metres away (measured using a 20 m tape measure or trundle wheel) records the time between seeing the flash of light from the ...

The German-born physicist’s most famous equation, E = mc 2 ... which proposed that in the vacuum of space, the speed of light is always the same, regardless of the movement of the person ...