Does a moving photon have mass?

Light is composed of photons, so we could ask if the photon has mass. The answer is then definitely “no”: the photon is a massless particle. According to theory it has energy and momentum but no mass, and this is confirmed by experiment to within strict limits.

What does it mean for a photon to be quantized?

Photons are a ​quantized​ particle. This means they exist only in discrete amounts of energy, rather than any amount of energy in between. So if a photon is the result of a “falling electron,” a photon must also come in only specific energy amounts, or quanta.

Is a photon a physical particle?

No because physical matter is made of fermions and has nonzero rest mass, whereas photons are bosons and have zero rest mass.

Is mass of photon greater than mass of electron?

Photon have greater mass. Mass of electron is negligible.

What is quantized energy?

Quantized energy means that the electrons can possess only certain discrete energy values; values between those quantized values are not permitted. 2. Both involve a relatively heavy nucleus with electrons moving around it, although strictly speaking, the Bohr model works only for one-electron atoms or ions.

What is meant by the term quantized energy?

Energy is quantized in some systems, meaning that the system can have only certain energies and not a continuum of energies, unlike the classical case. This would be like having only certain speeds at which a car can travel because its kinetic energy can have only certain values.

Is a photon energy?

Photon energy is the energy carried by a single photon. The amount of energy is directly proportional to the photon’s electromagnetic frequency and thus, equivalently, is inversely proportional to the wavelength. The higher the photon’s frequency, the higher its energy.

Is the mass of a photon the same as an electron?

Really different. So photons have no mass and travel only at the speed of light, while electrons have a (small) mass and can travel at any speed lower than the speed of light. Photons have a spin of 1, electrons a spin of 1/2.