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reversal of the polarity

См. также в других словарях:

  • The Neanderthal Parallax — is a trilogy of novels by Robert J. Sawyer published by Tor. It depicts the effects of the opening of a connection between two alternate Earths: the world familiar to the reader, and another where Neanderthals became the dominant, sentient… …   Wikipedia

  • Geomagnetic reversal — Magnetic reversal redirects here. For switching of a magnet, see Magnetization reversal. Geomagnetic polarity during the late Cenozoic Era. Dark areas denote periods where the polarity matches today s polarity, light areas denote periods where… …   Wikipedia

  • Electrodialysis reversal — EDR desalination is an electrodialysis reversal desalination membrane process that has been commercially used since the early 1960s. An electric current migrates dissolved salt ions, including fluorides, nitrates and sulfates, through an… …   Wikipedia

  • magnetic reversal — noun Any of several reversals in the polarity of the Earths magnetic field (such that a compass points South) that have happened over geologic time …   Wiktionary

  • Brunhes-Matuyama reversal — The Brunhes Matuyama Reversal was a geologic event, approximately 780,000 years ago, when the Earth s magnetic field last underwent reversal. The reversal occurred over several thousand years. The apparent duration at any particular location… …   Wikipedia

  • geomagnetic reversal — Alternation of the Earth s magnetic polarity. The Earth s internal magnetic field reverses, on average, about every 300,000 to 1 million years. This reversal is very sudden on a geologic time scale, apparently taking about 5,000 years. The time… …   Universalium

  • History of socialism — The history of socialism, sometimes termed modern socialism , [Encyclopedia Australia entry on socialism] finds its origins in the French Revolution of 1789 and the changes brought about by the Industrial Revolution, although it has precedents in …   Wikipedia

  • Benzoin condensation — The benzoin condensation is a condensation reaction between two aromatic aldehydes, particularly benzaldehyde. The reaction is catalyzed by a nucleophile such as the cyanide anion or an N heterocyclic carbene. The reaction product is an aromatic… …   Wikipedia

  • Magnetostratigraphy — is a geophysical correlation technique used to date sedimentary and volcanic sequences. The method works by collecting oriented samples at measured intervals throughout the section. The samples are analyzed to determine their characteristic… …   Wikipedia

  • Earth's magnetic field — Computer simulation of the Earth s field in a normal period between reversals.[1] The tubes represent magnetic field lines, blue when the field points towards the center and yellow when away. The rotation axis of the Earth is centered and… …   Wikipedia

  • Run length limited — or RLL coding is a technique that is used to store data on recordable media. Specifically, RLL prevents long stretches of repeated bits from causing the signal recorded on media to not change for an excessive period, by modulating the data. RLL… …   Wikipedia

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