- solar activity cycle
- <astron> ■ Sonnentätigkeitsperiode f
English-german technical dictionary. 2013.
solar activity cycle
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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
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
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
Solar minimum — is the period of least solar activity in the solar cycle of the sun. During this time, sunspot and solar flare activity diminishes, and often does not occur for days at a time. The date of the minimum is described by a smoothed average over 12… … Wikipedia
Solar maximum — or solar max is the period of greatest solar activity in the solar cycle of the sun. During solar maximum, sunspots appear.Solar maximum is contrasted with solar minimum. Solar maximum is the period when the sun s magnetic field lines are the… … Wikipedia
Solar wind — For other uses, see Solar wind (disambiguation). The solar wind is a stream of charged particles ejected from the upper atmosphere of the Sun. It mostly consists of electrons and protons with energies usually between 1.5 and 10 keV. The stream of … Wikipedia
Solar flare — A solar flare is a violent explosion in a star s (like the Sun s) atmosphere releasing as much energy as 6 times; 1025 Joules.cite journal last=Kopp first=G. coauthors=Lawrence, G and Rottman, G. year=2005… … Wikipedia
solar constant — the average rate at which radiant energy is received from the sun by the earth, equal to 1.94 small calories per minute per square centimeter of area perpendicular to the sun s rays, measured at a point outside the earth s atmosphere when the… … Universalium
Solar thermal energy — Solar thermal system for water heating in Santorini, Greece … Wikipedia
Solar — means appertaining to the Sun, our planet s star. Solar also has other meanings. Related to energy * Active solar * Passive solar ** Passive solar building design * Solar cell, a device that directly creates electricity from solar energy * Solar… … Wikipedia
