Elements of Astronomy
Elements of Astronomy
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In our eReader you can find the full English version of the book. Read Elements of Astronomy Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Elements of Astronomy
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When, therefore, we know the weight of a body and the speed with which it 292 CONSERVATION OF ENERGY.
is moving, we can easily calculate how much heat will be generated on stopping it.
Were the earth's motion arrested, its elements would melt with fervent heat, and most of them would be con- verted into vapor. Were the earth to fall into the sun, the heat generated by the shock would be sufficient to keep up the solar light and heat for 95 years. We know that countless swarms of meteoric bodies... are revolving in rings about the sun, and the well-known retardation of Encke's comet shows that these bodies must be moving in a resist- ing medium. If so, they must eventually be drawn into the sun, and, from the velocity with which they must strike, it has been shown that they could fall in sufficient numbers to generate all the light and heat of the sun, without in- creasing his magnitude enough to be detected, since ac- curate measures of his diameter were first made. This theory of the sun's heat was first published by Mayer in 1848, and was further developed by Thomson in 1854.
What to read after Elements of Astronomy?
You can find similar books in the "Read Also" column, or choose other free books by Rolfe, W. J. (William James), 1827-1910 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
When, therefore, we know the weight of a body and the speed with which it 292 CONSERVATION OF ENERGY.
is moving, we can easily calculate how much heat will be generated on stopping it.
Were the earth's motion arrested, its elements would melt with fervent heat, and most of them would be con- verted into vapor. Were the earth to fall into the sun, the heat generated by the shock would be sufficient to keep up the solar light and heat for 95 years. We know that countless swarms of meteoric bodies... are revolving in rings about the sun, and the well-known retardation of Encke's comet shows that these bodies must be moving in a resist- ing medium. If so, they must eventually be drawn into the sun, and, from the velocity with which they must strike, it has been shown that they could fall in sufficient numbers to generate all the light and heat of the sun, without in- creasing his magnitude enough to be detected, since ac- curate measures of his diameter were first made. This theory of the sun's heat was first published by Mayer in 1848, and was further developed by Thomson in 1854.
What to read after Elements of Astronomy?
You can find similar books in the "Read Also" column, or choose other free books by Rolfe, W. J. (William James), 1827-1910 to read onlineMoreLess
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