The Heavens Above: a Popular Handbook of Astronomy
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In our eReader you can find the full English version of the book. Read The Heavens Above: a Popular Handbook 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 The Heavens Above: a Popular Handbook of Astronomy
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14. Vanadium.
54 4 Lockyer.
15. Molybdenum 27 4 Lockyer.
16. Strontium .
74 4 Locliyer.
17. Lead . .
41 3 Lockyer.
18. Uranium .
21 3 Lockyer.
19. Aluminium 14 2 Angstrom.
20. Cerium. .
64 2 Lockyer.
21. Cadmium .
20 2 Lockyer.
2, Oxygen a [^ 42 12 ± bright H. Draper.
Oxygen /3 i 4 4?
Schuster.
In addition to the above elements, it is probable that several other elements are present in the sun's atmosphere ; since at least one of their bright lines has been found to coincide with dark lines of ...the solar spectrum. There are, however, a large number of elements, no traces of which have yet been detected ; and, in the cases of the elements whose presence in the solar atmosphere has been established, the matching of the lines is far from complete in the majority of the cases, as will be seen from the above table. This want of complete coincidence of the lines is undoubtedly due to the very high temperature of 1 68 ASTRONOMY.
the solar atmosphere. We have already seen that the lines of the spectrum change with the temperature ; and, as the tem- perature of the sun is far higher than any that we can produce by artificial means, we might reasonably expect that it would cause the disapj^earance from the spectrum of many lines which we find to be present at our highest temperature.
What to read after The Heavens Above: a Popular Handbook of Astronomy?
You can find similar books in the "Read Also" column, or choose other free books by J a Joseph Anthony Gillet to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
14. Vanadium.
54 4 Lockyer.
15. Molybdenum 27 4 Lockyer.
16. Strontium .
74 4 Locliyer.
17. Lead . .
41 3 Lockyer.
18. Uranium .
21 3 Lockyer.
19. Aluminium 14 2 Angstrom.
20. Cerium. .
64 2 Lockyer.
21. Cadmium .
20 2 Lockyer.
2, Oxygen a [^ 42 12 ± bright H. Draper.
Oxygen /3 i 4 4?
Schuster.
In addition to the above elements, it is probable that several other elements are present in the sun's atmosphere ; since at least one of their bright lines has been found to coincide with dark lines of ...the solar spectrum. There are, however, a large number of elements, no traces of which have yet been detected ; and, in the cases of the elements whose presence in the solar atmosphere has been established, the matching of the lines is far from complete in the majority of the cases, as will be seen from the above table. This want of complete coincidence of the lines is undoubtedly due to the very high temperature of 1 68 ASTRONOMY.
the solar atmosphere. We have already seen that the lines of the spectrum change with the temperature ; and, as the tem- perature of the sun is far higher than any that we can produce by artificial means, we might reasonably expect that it would cause the disapj^earance from the spectrum of many lines which we find to be present at our highest temperature.
What to read after The Heavens Above: a Popular Handbook of Astronomy?
You can find similar books in the "Read Also" column, or choose other free books by J a Joseph Anthony Gillet to read onlineMoreLess
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