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2 giorni fa · The invariant mass of an electron is approximately 9.109 × 10 −31 kilograms, or 5.489 × 10 −4 atomic mass units. Due to mass–energy equivalence, this corresponds to a rest energy of 0.511 MeV (8.19 × 10 −14 J). The ratio between the mass of a proton and that of an electron is about 1836.
- stable ( > 6.6×10²⁸ yr)
- J. J. Thomson (1897)
- e−, β−
- −1 e, −1.602176634×10−19 C
Wet electrons in chemistry and physics, which occur on the surface of metal oxides, are a transition state for electrons between the solid and liquid states of matter. Wet electrons are attracted to positively charged hydroxide ions which form on oxide surfaces in the presence of atmospheric moisture. These electrons in turn affect the ...
3 giorni fa · Upper bound of the mass–energy of a neutrino in particle physics (0.28 eV) 10 −19 1.6×10 −19 J: ≈1 electronvolt (eV) 3–5×10 −19 J: Energy range of photons in visible light (≈1.6–3.1 eV) 3–14×10 −19 J Energy of a covalent bond (2–9 eV) 5–200×10 −19 J Energy of ultraviolet light photons: 10 −18: atto-(aJ)
5 giorni fa · Electron, lightest stable subatomic particle known. It carries a negative charge of 1.6 x 10^-19 coulomb, which is considered the basic unit of electric charge. The electron was discovered in 1897 by the English physicist J.J. Thomson during investigations of cathode rays.
- The Editors of Encyclopaedia Britannica
5 giorni fa · The three are identical in all known experiments — they have all the same electromagnetic and weak nuclear interactions, and no strong nuclear interactions — except for effects that arise from the fact that they have different rest masses: electron rest mass: 0.000511 GeV/c 2; muon rest mass: 0.105658 GeV/c 2; tau rest mass: 1.777 GeV/c 2
5 giorni fa · A kilogram-force centimeter (kgf·cm) is a unit of torque representing the rotational force generated by one kilogram-force acting at a lever arm one centimeter long. It is a measure that combines mass (kilogram-force) with distance (centimeter) to describe the turning effect of a force applied to a rotating system, such as a gear or a lever.
4 giorni fa · Image: Orbital ATK. EAGLE – the ESPA Augmented Geostationary Laboratory Experiment – is an experimental space test platform commissioned by the U.S. Air Force Research Laboratory (AFRL) based on Orbital ATK’s ESPAStar Platform. Riding as a secondary payload on the AFSPC 11 mission, EAGLE will be deployed directly into ...
