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Books > Science & Mathematics > Astronomy, space & time > Solar system
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The Solar Wind and the Earth (Paperback, Softcover reprint of the original 1st ed. 1987)
Loot Price: R9,770
Discovery Miles 97 700
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The Solar Wind and the Earth (Paperback, Softcover reprint of the original 1st ed. 1987)
Series: Geophysics and Astrophysics Monographs, 30
Expected to ship within 10 - 15 working days
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As a star, the sun is continuously emitting an enormous amount of
energy 33 into space, up to as much as 3. 9 X 10 erg/ s. This
energy emission consists of three modes. Almost all the energy is
emitted in the form of the familiar black-body radiation, commonly
called sunlight. Although the amount of energy emitted is small,
the sun also emits x rays, extreme ultraviolet (EUV), and UV
radiations, which are absorbed above the earth's stratosphere.
These constitute the second mode of solar energy, separate from the
black-body radiation that penetrates the lower layers of the
atmosphere. The sun has another important mode of energy emission
in which the energy is carried out by charged particles. These
particles have a very wide range of energies, from less than I keY
to more than I GeV. Because of this wide range, it is convenient to
group them into two components: particles with energies greater
than 10 keY and the lower-energy particles. The former are
generally referred to as solar protons or solar cosmic rays; their
emission is associated with active features on the sun. Their
interaction with the atmosphere is similar to that of the x ray and
EUV radiation. Low-energy particles constitute plasma, a gas of
equal numbers of positive and negative particles. Actually, this
plasma is the outermost part of the solar atmosphere, namely the
corona, which blows out continuously . For this reason, the plasma
flow is called the solar wind.
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