The Story of the Stars Simply Told for General Readers: Simply Told for ...
The Story of the Stars Simply Told for General Readers: Simply Told for ...
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In our eReader you can find the full English version of the book. Read The Story of the Stars Simply Told for General Readers: Simply Told for ... 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 The Story of the Stars Simply Told for General Readers: Simply Told for ...
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48m.
17 Aquilae and /3 Lyrae may also be mentioned as short- period variables, which on that account, and because they are visible to the naked eye, are specially suitable for ob- servation by amateurs in England.
17 Aquilae varies from about mag. 3^ to mag. 4i in a period of about 7d. 4h. 14m., but this period itself seems variable. The star is yellow in colour and yields a spec- trum of Secchi's Ilnd Type.
j8 Lyrae is remarkable as having a double maximum and a double minimum, which together ...make up a main period of I2d. 2ih. 47m. The variations take the follow- ing form : — Starting from a maximum when the star is of mag. 3l, it descends to its first minimum of mag. 4 ; it then rises to the same maximum as before, but in descend- ing to the next minimum it goes down to mag. 4i. Arge- lander ascertained that ^ Lyrae resembles Mira Ceti as regards the circumstances of its period — in other words, that its period is itself vjiriable; that down to 1840 the period was increasing, but that after 1840 it began to de- crease, and was decreasing at the time when Argelander made this remark in 1866.
What to read after The Story of the Stars Simply Told for General Readers: Simply Told for ...?
You can find similar books in the "Read Also" column, or choose other free books by George F George Frederick Chambers to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
48m.
17 Aquilae and /3 Lyrae may also be mentioned as short- period variables, which on that account, and because they are visible to the naked eye, are specially suitable for ob- servation by amateurs in England.
17 Aquilae varies from about mag. 3^ to mag. 4i in a period of about 7d. 4h. 14m., but this period itself seems variable. The star is yellow in colour and yields a spec- trum of Secchi's Ilnd Type.
j8 Lyrae is remarkable as having a double maximum and a double minimum, which together ...make up a main period of I2d. 2ih. 47m. The variations take the follow- ing form : — Starting from a maximum when the star is of mag. 3l, it descends to its first minimum of mag. 4 ; it then rises to the same maximum as before, but in descend- ing to the next minimum it goes down to mag. 4i. Arge- lander ascertained that ^ Lyrae resembles Mira Ceti as regards the circumstances of its period — in other words, that its period is itself vjiriable; that down to 1840 the period was increasing, but that after 1840 it began to de- crease, and was decreasing at the time when Argelander made this remark in 1866.
What to read after The Story of the Stars Simply Told for General Readers: Simply Told for ...?
You can find similar books in the "Read Also" column, or choose other free books by George F George Frederick Chambers to read onlineMoreLess
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