On Light in Three Courses Delivered At Aberdeen in November 1882 December 1
On Light in Three Courses Delivered At Aberdeen in November 1882 December 1
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To quickly assess the difficulty of the text, read a short excerpt:
A star appeared in the constellation of the Northern Crown which observers who had been so in the habit of watching the heavens that they had as I may say got the stars by heart 70 LIGHT AS A MEANS OF INVESTIGATION.
recognised as new. Of course the discovery was im- mediately published, and astronomers directed their instruments to the new comer. It was none too soon, for the brightness of the star waned rapidly, so that even one or two days' delay made a difference. At the brightest, the star ...did not near equal the one which appeared in the time of Tycho Brahe ; but not to mention the improvement in telescopes, astro- nomers are now in possession of an instrument un- thought of in his days; I allude to a star spectroscope. When the new star was examined by the spectroscope, the spectrum was found to be of a composite character, resembling the ordinary spectrum of a star with a bright-line spectrum superposed on it. This indicated that a good part of the light coming from the star was due to incandescent gas ; and Dr Huggins men- tions that as the star faded, the continuous spectrum became relatively feebler than the spectrum which consisted of bright lines.
What to read after On Light in Three Courses Delivered At Aberdeen in November 1882 December 1?
You can find similar books in the "Read Also" column, or choose other free books by George Gabriel Stokes to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
A star appeared in the constellation of the Northern Crown which observers who had been so in the habit of watching the heavens that they had as I may say got the stars by heart 70 LIGHT AS A MEANS OF INVESTIGATION.
recognised as new. Of course the discovery was im- mediately published, and astronomers directed their instruments to the new comer. It was none too soon, for the brightness of the star waned rapidly, so that even one or two days' delay made a difference. At the brightest, the star ...did not near equal the one which appeared in the time of Tycho Brahe ; but not to mention the improvement in telescopes, astro- nomers are now in possession of an instrument un- thought of in his days; I allude to a star spectroscope. When the new star was examined by the spectroscope, the spectrum was found to be of a composite character, resembling the ordinary spectrum of a star with a bright-line spectrum superposed on it. This indicated that a good part of the light coming from the star was due to incandescent gas ; and Dr Huggins men- tions that as the star faded, the continuous spectrum became relatively feebler than the spectrum which consisted of bright lines.
What to read after On Light in Three Courses Delivered At Aberdeen in November 1882 December 1?
You can find similar books in the "Read Also" column, or choose other free books by George Gabriel Stokes to read onlineMoreLess
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