Question

What is light?

Answer 1

Definition

1. Light is an electromagnetic wave that is released by heated substances such as lasers, lightbulbs, as well as the sun.
2. Light is a sort of kinetic energy which permits our eyes to see objects.

Wave-particle duality

1. It is a central idea of quantum physics, explaining how light acts as particles as well as waves.
2. Depending on the premise that light and other such electromagnetic radiation might well be classified as either particles or waves.

Therefore, light is the electromagnetic radiation observable to the naked eye with wavelengths ranging from $380$ to $750\mathrm{nm}$.