The Origin of the Stars: And the Causes of Their Motions and Their Light |
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Page 14
... . 28. Hence all the planets are sometimes near and some- times farther from the sun . By their distance ordinarily is meant their mean distance . THE PLANETS ARE WORLDS . 15 29. An imaginary line 14 THE PLANETS ARE WORLDS .
... . 28. Hence all the planets are sometimes near and some- times farther from the sun . By their distance ordinarily is meant their mean distance . THE PLANETS ARE WORLDS . 15 29. An imaginary line 14 THE PLANETS ARE WORLDS .
Page 15
... line , called the radius vector , drawn from the planet to the sun , sweeps over equal areas in equal times . 30. The planets are all subject to perturbations ; that is , to be slightly impelled in various ways out of their paths by ...
... line , called the radius vector , drawn from the planet to the sun , sweeps over equal areas in equal times . 30. The planets are all subject to perturbations ; that is , to be slightly impelled in various ways out of their paths by ...
Page 18
... lines are seen to cross this spectrum , if viewed by a suitable instrument . These are called fixed lines , or Fraunhoffer lines , after their discoverer . The cause of these lines was discovered by Kirkhoff in the following man- ner ...
... lines are seen to cross this spectrum , if viewed by a suitable instrument . These are called fixed lines , or Fraunhoffer lines , after their discoverer . The cause of these lines was discovered by Kirkhoff in the following man- ner ...
Page 19
... lines of whatever color or position all become dark . Therefore the interpretation of the dark lines in the solar and stellar spectra is as follows : In the flames surrounding the sun and stars there are various substances similar to ...
... lines of whatever color or position all become dark . Therefore the interpretation of the dark lines in the solar and stellar spectra is as follows : In the flames surrounding the sun and stars there are various substances similar to ...
Page 20
... lines in the spectrum . We are thus enabled to enumerate other points of resemblance between the sun and the fixed stars . 7. Both the sun and the fixed stars are composed of elements similar to our earth . 8. There is the most intense ...
... lines in the spectrum . We are thus enabled to enumerate other points of resemblance between the sun and the fixed stars . 7. Both the sun and the fixed stars are composed of elements similar to our earth . 8. There is the most intense ...
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Common terms and phrases
accounts Alpha Centauri amount appear asteroids astronomers atmosphere axis blue bodies bright burning carbon cause centre centrifugal force centripetal force changes of color chemical action chemical force combination combustion compounds condensation condition cooling dark dense density diameter disk distance double stars earth equal evidences exterior facts fixed lines fixed stars flames force of gravity friction gaseous gravity greater Hence hundred hydrogen inclined plane interior heat irregular Jupiter known space laws less light and heat liquid matter melted Mercury meteorites miles Milky millions moon motions mountains nearly nebular theory nebulous globe nebulous sun Neptune oblateness observations ocean origin oxygen penumbra periodic stars photosphere physical forces planetary planets planets and satellites produce retardation revolve ring Saturn seen sidereal system simple chemical elements simple elements Sirius solar system space spots stellar sun's surface temporary stars tion Uranus variable stars velocity of rotation Venus Webb yellow
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