Electron

From Engineering

Electron
The first few hydrogen atom electron orbitals shown as cross-sections with color-coded probability density
Classification
Elementary particle Fermion Lepton First Generation Electron
Properties
Mass: 9.109 3826(16) × 10−31 kg 1⁄1836.152 672 61(85) amu 0.510 998 918(44) MeV/c2Template:Inote Electric Charge: −1.602 176 53(14) × 10−19 C Spin: ½ Color Charge: none Interaction: Gravity, Electromagnetic, Weak

The electron is a fundamental subatomic particle that carries a negative electric charge. See also electron [1]]

Contents 1 In industry 2 Usage 3 See also 4 External links 5 References

[edit] In industry

Electron beams are used in welding as well as lithography.

[edit] Usage

Electron microscopes are used to magnify details up to 500,000 times. Quantum effects of electrons are used in Scanning tunneling microscope to study features at the atomic scale.

[edit] See also

• Electron [[2]]
• Proton
• Neutron
• Photoelectric Effect
• Lightning
• Cathode rays
• Electricity

[edit] External links

• The Discovery of the Electron from the American Institute of Physics History Center
• Particle Data Group
• Stoney, G. Johnstone, "Of the 'Electron,' or Atom of Electricity". Philosophical Magazine. Series 5, Volume 38, p. 418-420 October 1894.
• Eric Weisstein's World of Physics: Electron

[edit] References

• Template:Cite book[[3]]
• Template:Cite book[[4]]
• Brumfiel, G. (6 January 2005)[[5]]. Can electrons do the splits? In Nature, 433, 11.

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