Tulsi Prajna 2003 10

SR No.: 524617
Original Sutra Author: N/A
Author: Shanta Jain, Jagatram Bhattacharya
Publisher: Jain Vishva Bharati
Publication Year: 2003
Total Pages: 114
Language: Hindi
Classification: Magazine, India_Tulsi Prajna, & India
File Size: 6 MB

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for absorbing a large proportion of ultra-violet radiation radiated by the sun and this layer protects the life on earth from its harmful
effects. The ozone layer is also called ozonosphere. 3. Mesosphere: The region of earth's atmosphere between 50 to 80
km from the surface of earth is called mesosphere. The density of the atmosphere in this region varies from 10% kg m-3 to 10-' kg
m- and the temperature varies from 290 K to 180 K. 106 (B) Text book of Physics, (Std. XII), Part II, pages 100, 101 -
Electromagnetic Radiations and Earth's Atmosphere Electromagnetic radiations passing through different media suffer effects like scattering, refraction, reflection, polarization and absorption. The effects produced by the electromagnetic radiations of different wavelengths during their passage through the earth's atmosphere are of particular importance to us. The following points are to be noted : (1) As you go above earth's surface, density of the atmosphere goes on
decreasing, but there is no sharp limit to the atmosphere above. (2) Upper layers of the atmosphere are partially ionized; i.e. they have
atoms ionized to electrons and positive ions. This layer is called
the ionosphere (3) Layers of the atmosphere below the ionosphere are mostly of neutral
atoms and molecules. (4) Molecules of water are mostly confined to the lowest layer called
the troposhere. (5) There is a significant amount of Ozone (o,) gas in the height
range 30 to 50 kilometers. 106. (c) Satish K. Gupta, op.cit, pages 137, 138
The Atmosphere and Electricity The earth's atmosphere extends upto about 400 km above the surface of the earth. The electrical properties of the atmosphere goes on changing, as one goes up from the surface of earth. On the basis of these electric ... properties the earth's atmosphere has been divided into following four layers: 1. Troposphere, 2. Stratosphere, 3. Mesophere, 4. Ionosphere. The electrical properties and the phenomena occurring in the
got 3511 3Trça-FGHFORT, 2003
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