(in period of minimum solar activity)

См. также в других словарях:

• 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 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 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 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

• Spörer Minimum — The Spörer Minimum was a period of low solar activity which lasted from about 1420 to 1570 (some say 1450 to 1550). It occurred before sunspots had been directly observed, and was discovered instead by analysis of the proportion of carbon 14 in… …   Wikipedia

• Dalton Minimum — The Dalton minimum in the 400 year history of sunspot numbers The Dalton Minimum was a period of low solar activity, named after the English meteorologist John Dalton, lasting from about 1790 to 1830.[1] Like the Maunder Minimum and Spörer… …   Wikipedia

• Maun|der minimum — «MN duhr», a period of irregular solar activity between about 1645 and 1715, characterized especially by the virtual absence of sunspots. ╂[< E. Walter Maunder, a British solar astronomer of the 1800 s, who first described it in 1890; minimum …   Useful english dictionary

• Solar power satellite — A solar power satellite, or SPS or Powersat, as originally proposed would be a satellite built in high Earth orbit that uses microwave power transmission to beam solar power to a very large antenna on Earth. Advantages of placing the solar… …   Wikipedia

• Maunder Minimum — The Maunder minimum in a 400 year history of sunspot numbers The Maunder Minimum (also known as the prolonged sunspot minimum) is the name used for the period roughly spanning 1645 to 1715 when sunspots became exceedingly rare, as noted by solar… …   Wikipedia