Quantum entanglement remains one of the most mysterious phenomena in modern physics. It seems to allow particles to ...

The speed of light – the fastest speed in the universe – reveals mind-blowing truths about reality. Why does this limit exist ...

The ancient Egyptian pyramid of Giza’s latitude lines up exactly with the speed of light. Credit: Harish Chouhan WordPress.

Even a sewing needle measuring just 35mm could cause significant damage if moving at an absurdly high speed, resulting in ...

On its surface, entanglement allows particles to communicate over vast distances instantly, apparently violating the speed of light. But while ...

is. Light of frequency \(4.6\times 10^{14}Hz\) travels at a speed of \(1.24\times 10^{8}ms^{-1}\) in diamond. Calculate the refractive index of diamond for this colour of light.

The change in direction of a ray depends on the change in the speed of the light and can be used to calculate the refractive index. For the example above the refractive index \(n\) of the glass is ...