Final answer:
A photon is the smallest indivisible particle of light, carrying a specific amount of energy. It can be thought of as a packet of energy that makes up light waves.
Step-by-step explanation:
A photon is the smallest indivisible unit of light, representing a quantum packet of energy.
It possesses a well-defined energy that can be equivalently expressed as a wavelength or frequency.
Photons are discrete entities or "packets" of light energy, serving as the fundamental particles constituting light waves.
As quantized units, they play a pivotal role in the wave-particle duality of light, exhibiting both particle-like and wave-like characteristics.
Each photon carries a specific amount of energy, and collectively, they form the electromagnetic radiation that comprises light.
This concept is fundamental to the understanding of the behavior and properties of light in the realm of quantum mechanics.