22 year sunspot cycle

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• Sunspot Cycle —    A somewhat regular eleven year cycle where the frequency of sunspots goes from almost none, to many …   The writer's dictionary of science fiction, fantasy, horror and mythology

• Sunspot — A sunspot is a region on the Sun s surface (photosphere) that is marked by intense magnetic activity, which inhibits convection, forming areas of reduced surface temperature. They can be visible from Earth without the aid of a telescope. Although …   Wikipedia

• Solar cycle — The solar cycle, or the solar magnetic activity cycle, is the main source of periodic variation of all solar phenomena driving variations in space weather. [ [http://www7.nationalacademies.org/ssb/SSB Space weather97.pdf Space Weather: A Research …   Wikipedia

• solar cycle — Astron. the variation of sunspots, prominences, flares, and other solar activity through an 11 year cycle. Also called solar activity cycle. Cf. sunspot cycle. * * * Period in which several important kinds of solar activity repeat, discovered in… …   Universalium

• Climate cycle — A climate cycle is a type of recurring climate pattern that involves natural cyclic variations in the Earth s surface temperature, as indicated by temperature proxies found in glacier ice, sea bed sediment, tree ring studies or otherwise. Several …   Wikipedia

• solar cycle — noun 1. : a cycle of disturbances in the sun and its atmosphere (as the fluctuation in the numbers and areas of sunspots or the form and shape of the corona) of an average length of about 11 years 2. : cycle of the sun * * * Astron. the variation …   Useful english dictionary

• International Geophysical Year —       worldwide program of geophysical research that was conducted from July 1957 to December 1958. IGY was directed toward a systematic study of the Earth and its planetary environment. The IGY encompassed research in 11 fields of geophysics:… …   Universalium

• The Year of the Jackpot — is a science fiction short story by Robert A. Heinlein, first published 1952, and collected in one of Heinlein s anthologies, The Menace from Earth .In the story, a trend following statistician finds romance and a disturbing conclusion. The story …   Wikipedia

• Solar variation — Solar variations are changes in the amount of solar radiation emitted by the Sun. There are periodic components to these variations, the principal one being the 11 year solar cycle (or sunspot cycle), as well as aperiodic fluctuations. Solar… …   Wikipedia

• TV and FM DX — TV DX and FM DX is the active search for distant radio or television stations received during unusual atmospheric conditions. The term DX is an old telegraphic term meaning long distance. VHF/UHF television and radio signals are normally limited… …   Wikipedia

• 2012 — This article is about the year 2012. For the film, see 2012 (film). For other uses, see 2012 (disambiguation). 2012 : January · February · March · April · May · …   Wikipedia