electron volt by hassan fareed || electron volt class 12 physics

Описание: An electronvolt (eV) is a unit of energy used in physics, particularly in the field of atomic and particle physics. It is defined as the amount of kinetic energy gained or lost by an electron when it is accelerated through an electric potential difference of one volt.

In more specific terms, one electronvolt is equal to approximately 1.60219 x 10^-19 joules. This unit is convenient for describing the energy of particles at the atomic and subatomic level because it provides a more manageable scale when compared to the joule, which is the standard unit of energy in the International System of Units (SI). Electrons and other particles at this scale often have energies that are measured in electronvolts rather than joules.

Here are some examples of energies expressed in electronvolts:

1. The energy of an electron in an atom's outer shell is typically a few electronvolts.
2. The rest mass energy of an electron, as described by Einstein's famous equation E=mc^2, is approximately 511,000 electronvolts.
3. Particle accelerators like the Large Hadron Collider (LHC) can accelerate particles to energies in the teraelectronvolt (TeV) range.

Electronvolts are especially useful in particle physics for describing the masses and energies of subatomic particles and the energies involved in particle interactions.


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