History of Astronomy |
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Page 90
On examining artificial lights it was found that incandescent solids and liquids (
including the carbon glowing in a white gas flame ) give continuous spectra ;
gases , except under enormous pressure , give bright lines . If sodium or common
salt ...
On examining artificial lights it was found that incandescent solids and liquids (
including the carbon glowing in a white gas flame ) give continuous spectra ;
gases , except under enormous pressure , give bright lines . If sodium or common
salt ...
Page 105
So bright was it that Jansen exclaimed : “ Je verrai ces lignes - là en dehors des
éclipses . ” And the next day he observed the lines at the edge of the uneclipsed
sun . 1868 , his idea being to use prisms of such great dispersive power that the ...
So bright was it that Jansen exclaimed : “ Je verrai ces lignes - là en dehors des
éclipses . ” And the next day he observed the lines at the edge of the uneclipsed
sun . 1868 , his idea being to use prisms of such great dispersive power that the ...
Page 137
It was full of bright lines of hydrogen , calcium , helium , and others not identified .
The astounding fact was that lines were shown in pairs , bright and dark , on a
faint continuous spectrum , indicating apparently that a dark body approaching us
...
It was full of bright lines of hydrogen , calcium , helium , and others not identified .
The astounding fact was that lines were shown in pairs , bright and dark , on a
faint continuous spectrum , indicating apparently that a dark body approaching us
...
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Contents
Ancient GREEK ASTRONOMY | 3 |
INSTRUMENTS OF PRECISIONSIZE OF THE SOLAR | 10 |
GALILEO AND THE TELESCOPENOTIONS OF GRAVITY | 46 |
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Common terms and phrases
accepted accurate ancient appear astronomers attraction bodies born bright calculations called catalogue cause centre century circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect enabled epicycles equal error excentric explain fact fixed follow force Galileo give given gravitation heavenly heavens held Herschel Hipparchus idea included interesting invented Jupiter Kepler knowledge known later light lunar Mars mass mathematical mean measured method miles minutes moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planetary planets pole position predicted present principle progress proper proved records revolve rotation round Royal satellites says seems seen showed solar system spectroscope spectrum stars studied sun's supported supposed surface tables telescope theory tion trace true Tycho Brahe uniform universal
Bibliographic information
| Title | History of Astronomy Hist. of sci. series History of science series |
| Author | George Forbes |
| Publisher | Watts, 1909 |
| Original from | the University of California |
| Digitized | 13 Jan 2011 |
| Length | 154 pages |
| Export Citation | BiBTeX EndNote RefMan |