Consumer & Gadgets

Sgnl wrist strap allows you to communicate in calls via fingertip

(Tech Xplore)—How convenient is convenient? For the inventor, the Age of Convenience is ageless. There is no limit to what imagination can deliver for making simple actions easier on body and brain. Add one to the mix—fingertip ...

Consumer & Gadgets

Health record app for Google Glass developed by Drchrono

The future of Google Glass in health care appears to be by now not a question of if but a question of where and when. Philips Healthcare, in its explorations into health care's future, created a video that imagined how Google ...

Engineering

New AI camera could revolutionize autonomous vehicles

The image recognition technology that underlies today's autonomous cars and aerial drones depends on artificial intelligence: the computers essentially teach themselves to recognize objects like a dog, a pedestrian crossing ...

Consumer & Gadgets

E Ink broadens product mix, shows 32-inch display

Mention E Ink, and most people familiar with the company name associate it with a product for e-readers, but the company has been spreading its wings to apply its technology in broader areas. Technology watchers see E Ink ...

Engineering

3-D printer threads electronic fibers onto fabrics

The potential for wearable electronics goes far beyond smart watches, but our current options for battery packs and circuit boards don't make for the most comfortable E-socks. One solution, being developed by scientists in ...

Engineering

New malleable 'electronic skin' self-healable, recyclable

University of Colorado Boulder researchers have developed a new type of malleable, self-healing and fully recyclable "electronic skin" that has applications ranging from robotics and prosthetic development to better biomedical ...

Business

End of an era as Japan's Panasonic exits chip business

Japanese electronics giant Panasonic said Thursday it was exiting the semiconductor business, selling its loss-making subsidiary to a Taiwanese firm as it struggles with intense competition from China and South Korea.

Consumer & Gadgets

Polyera announces truly flexible display

Flexible technology development company Polyera has announced, via press release, that it has succeeded in creating a truly bendable electronic display and will be showcasing it soon, as part of an arm band it has also developed ...

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Electron

The electron is a subatomic particle that carries a negative electric charge. It has no known substructure and is believed to be a point particle. An electron has a mass that is approximately 1836 times less than that of the proton. The intrinsic angular momentum (spin) of the electron is a half integer value of 1/2, which means that it is a fermion. The anti-particle of the electron is called the positron, which is identical to electron except that it carries electrical and other charges of the opposite sign. In collisions electrons and positrons annihilate, producing a pair (or more) of gamma ray photons. Electrons participate in gravitational, electromagnetic and weak interactions.

The concept of an indivisible amount of electric charge was theorized to explain the chemical properties of atoms, beginning in 1838 by British natural philosopher Richard Laming; the name electron was introduced for this charge in 1894 by Irish physicist George Johnstone Stoney. The electron was identified as a particle in 1897 by J. J. Thomson and his team of British physicists. Electrons are identical particles that belong to the first generation of the lepton particle family. Electrons have quantum mechanical properties of both a particle and a wave, so they can collide with other particles and be diffracted like light. Each electron occupies a quantum state that describes its random behavior upon measuring a physical parameter, such as its energy or spin orientation. Because an electron is a type of fermion, no two electrons can occupy the same quantum state; this property is known as the Pauli exclusion principle.

In many physical phenomena, such as electricity, magnetism, and thermal conductivity, electrons play an essential role. An electron generates a magnetic field while moving, and it is deflected by external magnetic fields. When an electron is accelerated, it can absorb or radiate energy in the form of photons. Electrons, together with atomic nuclei made of protons and neutrons, make up atoms. However, electrons contribute less than 0.06% to an atom's total mass. The attractive Coulomb force between an electron and a proton causes electrons to be bound into atoms. The exchange or sharing of the electrons between two or more atoms is the main cause of chemical bonding.

Electrons were created by the Big Bang, and they are lost in stellar nucleosynthesis processes. Electrons are produced by cosmic rays entering the atmosphere and are predicted to be created by Hawking radiation at the event horizon of a black hole. Radioactive isotopes can release an electron from an atomic nucleus as a result of negative beta decay. Laboratory instruments are capable of containing and observing individual electrons, while telescopes can detect electron plasma by its energy emission. Electrons have multiple applications, including welding, cathode ray tubes, electron microscopes, radiation therapy, lasers and particle accelerators.

This text uses material from Wikipedia, licensed under CC BY-SA