Question

What is photon ? Explain

Answer 1

Answer:

Explanation. The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force (even when static via virtual particles). The photon has zero rest mass and always moves at the speed of light within a vacuum.

Photon

Composition Elementary particle

Interactions Electromagnetic, Weak, Gravity

Symbol

γ

Theorized

Albert Einstein (1905)

The name of "photon" is generally attributed to Gilbert N. Lewis (1926)

Mass 0

Spin 1

Like all elementary particles, photons are currently best explained by quantum mechanics and exhibit wave–particle duality, exhibiting properties of both waves and particles. For example, a single photon may be refracted by a lens and exhibit wave interference with itself, and it can behave as a particle with definite and finite measurable position or momentum, though not both at the same time as per Heisenberg's uncertainty principle. The photon's wave and quantum qualities are two observable aspects of a single phenomenon—they cannot be described by any mechanical model a representation of this dual property of light that assumes certain points on the wavefront to be the seat of the energy is not possible. The quanta in a light wave are not spatially localized.

Answer 2

A proton is a subatomic particle symbol p or p+ with a with a positive electric charge

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