Elektronivoltin

Elektronivoltin, also known as electronvolt, is a unit of energy used in atomic and subatomic physics. It is defined as the amount of kinetic energy gained by a single unbound electron when it is accelerated through an electric potential difference of one volt in vacuum. One electronvolt is equal to 1.602176634 × 10^-19 joules. The electronvolt is commonly used to express the energy of particles, such as electrons, protons, and alpha particles, in atomic and nuclear reactions. It is also used to measure the energy levels of electrons in atoms and molecules. The electronvolt is abbreviated as eV, and its multiples, such as kiloelectronvolt (keV), megaelectronvolt (MeV), and gigaelectronvolt (GeV), are used to express larger energies. The electronvolt is an important unit in the study of particle physics, nuclear physics, and condensed matter physics.