What is an electron (classically)?


Is an electron a classical particle?

Quantum theory to the Rescue!



By the 1920’s, it became clear that a tiny object such as the electron cannot be treated as a classical particle having a definite position and velocity.

What is electron in physics definition?

electron, lightest stable subatomic particle known. It carries a negative charge of 1.602176634 × 1019 coulomb, which is considered the basic unit of electric charge.

What is classical particle?

A classical particle is a point-like object. The type of particle is defined by properties that define how it interacts: mass (gravity) & charge (electromagnetism). At the subatomic level, there are generalizations of charge that describe interactions with short-range forces, but then quantum effects become important.

How do you find the classical radius of an electron?

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What is an electron Class 9?

Electrons are subatomic particles that hold an elementary charge of magnitude -1. The charge of an electron is equal in magnitude to the charge held by a proton (but has an opposite sign). Therefore, electrically neutral atoms/molecules must have an equal number of electrons and protons.

What is electron proton and neutron Class 9?

Electron, proton, neutron are subatomic particles which build the atom. The atom consists of a central nucleus containing neutron and proton. Electrons revolve around the nucleus. Electrons are negatively charged, proton is positively charged and neutron is neutral. Chemistry.

Do electrons have a radius?

The classical electron radius



It has a value of 2.82×1015 m. That’s certainly small. Now compare this with the measured radius of a proton, which is 1.11×1015 m [3]. According to this an electron has a radius 2.5 times larger than a proton.

What is the approximate radius of electron?

The classical electron radius is well known and effectively represents the charge radius which is 2.82 X 10^-15 m.

What is the size of an electron?

For an electron, it has a value of 2.43×1012 m.

What is the radius of a photon?

A photon is in shape like a thin stick if its energy is lower than the rest energy of an electron and like a plate if its radius is smaller than the classical radius of an electron. For a photon of hν=13.6 eV, the photon radius is 34.9 pm and is less than the Bohr radius.

What is Compton wavelength of an electron?

electron and h/mc is called Compton wavelength. It has the value 0.0243 angstrom. The energy hν of a photon of this wavelength is equal to the rest mass energy mc2 of an electron.

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What is the Compton radius also known as the Compton wavelength of the electron in NM?

The CODATA 2018 value for the Compton wavelength of the electron is 2.42631023867(73)×1012 m. Other particles have different Compton wavelengths.

What is the Compton wavelength of a proton?

(d) For protons, Compton wavelength is λ′0=1.32×10−14m.