What is the difference between light and photon? Difference Between Photon and Photoelectron

The photon was proposed by Einstein in the photon theory, which believes that light is not continuous but one by one, and each part is called a photon. e=hv

Light is made up of a large number of photons, and the energy of monochromatic light e=nhv

1. Different application fields: There are many application fields of electronics, such as electron beam welding, cathode ray tubes, and electron microscopes.

Radiation**, lasers, particle accelerators, and more. Photons can be used in two-photon excitation microscopy, photochemistry, and molecular spacing measurements.

2. The time of proposal is different: the electron was discovered in 1897 by the British physicist Joseph John Thomson while studying cathode rays. Photon in 1905 by Albert Einstein.

It was proposed and officially named in 1926 by the American physical chemist Gilbert Lewis.

Photoelectrons: The effect of emitting electrons from metal surfaces under light irradiation is collectively known as the photoelectric effect.

The emitted electrons are called photoelectrons. Photoelectrons are electrons produced by stimulated radiation in the photoelectric effect, which are essentially electrons of metal plates, corresponding to the concept of "photons". "Photons" are what are currently considered to be the essence of light:

Light is made up of photons, like small balls. However, the essential difference with a sphere is that the photon has no mass, and has both wave and particle properties (wave-particle duality).

Photons are the basic components of light, and the three descriptions of light, light waves, and photons explain the same thing from different perspectives.

Photoelectrons (also called photogenerated electrons) are actually electrons, which are electrons that can be used as carriers of current (and electrons that can form electric currents) due to physical effects such as the photoelectric effect.

As for your question on the first floor, the rest mass of the photon is 0 (which is more complicated physically, and the correct description is "there is no matter with a smaller mass than the rest photon"), and the rest mass of the photoelectron is the rest mass of the electron (multiplied by 10 to the minus 31 kilogram).

The question about mass at rest concerns the relativistic effect, to put it simply: an object moving at a speed close to the speed of light, its mass is amplified, and the closer it is to the speed of light, its mass increases, up to infinity.

And then by the way, mass, there is no absolute value to the mass of matter, mass is a function of the speed of motion. Physically, mass is determined by the interaction of an object with other objects.

It's a bit of a stretch... So be it...

Summary. Hello, dear <>

Photon refers to: A photon (also known as a quantum of light) is a particle with zero mass at rest j with energy and momentum. Its energy is expressed as e=h ( is the frequency, h is the Planck constant) and momentum is expressed as p=e c (c is the speed of light).

2) Explain that the experimental basis of the photon theory is ablackbody radiation; b.Photoelectric effect; c.

The Compton effect. Based on these experiments, what does the photon theory refer to?

Hello, dear <>

Photons refer to: photons (also known as light quanta) are a kind of particles with zero rest mass j in Kailing, which have energy and momentum. Its energy is expressed as e=h ( is the frequency, h is the Planck constant) and momentum is expressed as p=e c (c is the speed of light).

2) Explain that the experimental basis of the photon theory is ablackbody radiation; b.Photoelectric effect round pin shall; c.

The Compton effect. Based on these experiments came up with the photon theory