English Wikipedia - The Free Encycl...
הורד מילון זה
Electron
The electron is a subatomic particle, symbol or , with a negative elementary electric charge. Electrons belong to the first generation of the lepton particle family, and are generally thought to be elementary particles because they have no known components or substructure. The electron has a mass that is approximately 1/1836 that of the protonQuantum mechanical properties of the electron include an intrinsic angular momentum (spin) of a half-integer value in units of h, which means that it is a fermion. Being fermions, no two electrons can occupy the same quantum state, in accordance with the Pauli exclusion principle. Like all matter, electrons have properties of both particles and waves, and so can collide with other particles and can be diffracted like light. The wave properties of electrons are easier to observe with experiments than those of other particles like neutrons and protons because electrons have a lower mass and hence a higher De Broglie wavelength for typical energies.

See more at Wikipedia.org...

 
Electron rest mass
The electron rest mass (symbol: ) is the mass of a stationary electron. It is one of the fundamental constants of physics, and is also very important in chemistry because of its relation to the Avogadro constant. It has a value of about  kilograms or about  atomic mass unitsequivalent to an energy of about  joules or about 0.511 megaelectronvolts.

See more at Wikipedia.org...


© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License