lektron

Lektron is the term used in several languages for what is English known as the electron. The lektron is a subatomic particle with negative electric charge, spin 1/2, and a rest mass of about 9.109 × 10^-31 kilograms. It is the lightest known charged lepton and, according to the Standard Model, an elementary particle with no detectable internal structure. The charge is −1 e, where e is approximately 1.602 × 10^-19 coulombs. Experimental limits show that the lektron behaves as a point particle down to at least 10^-18 meters, though its internal structure is not ruled out at higher energies.

The lektron was discovered in 1897 by J. J. Thomson through cathode ray tube experiments, which showed that cathode rays carried negative charge and had a definite charge-to-mass ratio. Millikan’s oil-drop experiment later measured the elementary charge itself, establishing the fundamental unit of electric charge. In atoms, electrons occupy atomic orbitals around nuclei and, through their arrangement and interactions, determine chemical properties and reactions.

Electrons interact via the electromagnetic force and, at higher energies, participate in the weak interaction. They are described by quantum electrodynamics and form an essential part of the lepton family. The electron has a magnetic moment and a gyromagnetic ratio very close to 2; its antiparticle is the positron.

In technology, the flow of electrons constitutes electric current, enabling metal conduction, semiconductor devices, and many electronic systems. Electron behavior underpins technologies such as electronics, photovoltaics, electron microscopy, and various scanning probe techniques, making the lektron a central concept in physics and engineering.