runaway electron

См. также в других словарях:

• Runaway breakdown — is a theory of lightning initiation proposed by Alex Gurevich in 1992.Electrons in air have a mean free path of 1cm. Fast electrons which move at a large fraction of the speed of light have a mean free path up to 100 times longer. Given the long… …   Wikipedia

• Lightning — This article is about the atmospheric electrical phenomenon. For other uses, see Lightning (disambiguation). See also: Lightning strike Lightning striking Atlanta, United States Lightning is an atmospheric electrostatic discharge (spar …   Wikipedia

• Terrestrischer Gammablitz — Künstlerische Darstellung: Gammastrahlen Blitz und verwandte Phänomene. Terrestrische Gammablitze (englisch terrestrial gamma ray flash, TGF) sind Ausbrüche von energiereicher elektromagnetischer Strahlung (vgl. Gammablitz) in der… …   Deutsch Wikipedia

• Terrestrial gamma-ray flash — Terrestrial gamma ray flashes (TGFs) are bursts of gamma rays in the earth s atmosphere. TGFs have been recorded to last 0.2 to 3.5 milliseconds, and have energies of up to 20 MeV. They are probably caused by electric fields produced above… …   Wikipedia

• Stellar evolution — Life cycle of a Sun like star Stellar evolution is the process by which a star undergoes a sequence of radical changes during its lifetime. Depending on the mass of the star, this lifetime ranges from only a few million years (for the most… …   Wikipedia

• Greenhouse effect — The Greenhouse effect refers to the change in the thermal equilibrium temperature of a planet or moon by the presence of an atmosphere containing gas that absorbs infrared radiation. [ [http://www.ipcc.ch/pdf/assessment report/ar4/syr/ar4 syr… …   Wikipedia

• White dwarf — For other uses, see White dwarf (disambiguation). Image of Sirius A and Sirius B taken by the Hubble Space Telescope. Sirius B, which is a white dwarf, can be seen as a faint pinprick of light to the lower left of the much brighter Sirius A …   Wikipedia

• Plasma (physics) — For other uses, see Plasma. Plasma lamp, illustrating some of the more complex phenomena of a plasma, including filamentation. The colors are a result of relaxation of electrons in excited states to lower energy states after they have recombined… …   Wikipedia

• MOSFET — Two power MOSFETs in the surface mount package D2PAK. Operating as switches, each of these components can sustain a blocking voltage of 120 volts in the OFF state, and can conduct a continuous current of 30 amperes in the ON state, dissipating up …   Wikipedia

• Bipolar junction transistor — BJT redirects here. For the Japanese language proficiency test, see Business Japanese Proficiency Test. PNP …   Wikipedia

• Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia