Contributions to Solar Physics: I. A Popular Account of Inquiries Into the Physical Constitution of the Sun, with Special Reference to Recent Spectroscopic Researches; II. Communications to the Royal Society of London, and the French Academy of Sciences, with NotesMacmillan and Company, 1874 - 676 pages |
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Common terms and phrases
absorption angle Ångström appearance astronomers Balfour Stewart bright lines brilliant centre changes CHAP chromo chromosphere cloud coincident colour Comptes Rendus continuous spectrum corona dark lines disc dispersion distance energy envelope evidence F line fact faculæ Father Secchi Frankland Franklin Institute Fraunhofer lines gaseous give glass heat height Huggins hydrogen lines incandescent indicated instrument j'ai Janssen jets Kirchhoff les raies less light lignes Lockyer luminous magnesium masses ment method moon motion nences NOTE observed obtained PAPER penumbra period phenomena photographs photosphere polariscope polarization poles portion position prism prominences qu'il question radiation raie rays referred refracting refrangible region régions remarks Respighi rotation Royal Society seen side slit sodium solar atmosphere solar spectrum Soleil spectra spectroscope sphere spots stratum substance sun-spots sun's atmosphere sun's limb surface taches telescope temperature tion total eclipse tube umbra vapour violet visible wave-length
Popular passages
Page 103 - Yet still, from time to time, vague and forlorn, From the soul's subterranean depth upborne As from an infinitely distant land, Come airs, and floating echoes, and convey A melancholy into all our day.
Page 212 - I am purposing them, to be considered of and examined, an account of a philosophical discovery which induced me to the making of the said telescope ; and I doubt not but will prove much more grateful than the communication of that instrument ; being in my judgment the oddest, if not the most considerable detection which hath hitherto been made in the operations of nature.
Page 232 - If the hydrogen-lines were invariably observed to broaden out on both sides, the idea of movement would require to be received with great caution ; we might be in presence of phenomena due to greater pressure, both when the lines observed are bright or black upon the sun ; but when they widen out sometimes on one side, sometimes on the other, and sometimes on both, this explanation appears to be untenable, as Dr. Frankland and...
Page 194 - I conclude further, that the dark lines of the solar spectrum which are not evoked by the atmosphere of the earth, exist in consequence of the presence, in the incandescent atmosphere of the sun, of those substances which in the spectrum of a flame produce bright lines at the same place.
Page 526 - ... we were in a position to determine the atmospheric pressure operating in a prominence in which the red and green lines are nearly of equal width, and in the chromosphere, through which the green line gradually expands as the sun is approached. With regard to the higher prominences, we have...
Page 399 - In place of the quiet cloud I had left, the air, if I may use the expression, was filled with flying <! t'bris — a mass of detached vertical fusiform filaments, each from 10" to 30" long by 2" or 3" wide, brighter and closer together where the pillars had formerly stood, and rapidly ascending.
Page iv - CONTRIBUTIONS TO SOLAR PHYSICS. By J. NORMAN LOCKYER, FRSI A Popular Account of Inquiries into the Physical Constitution of the Sun, with especial reference to Recent Spectroscopic Researches. II. Communications to the Royal Society of London and the French Academy of Sciences, with Notes. Illustrated by 7 Coloured Lithographic Plates and 175 Woodcuts. Royal 8vo. cloth, extra gilt, price 3u.
Page 399 - But in the meanwhile the little " thunderhead " before alluded to had grown and developed wonderfully into a mass of rolling and everchanging flame, to speak according to appearances. First it was crowded down, as it were, along the solar surface ; later it rose almost pyramidally...
Page 20 - This gives the impression of a division between the luminous masses, especially with a comparatively low power, which, however, when best seen with high powers, is found to be never complete.
Page 148 - The position of the prism in which the colours are most clearly divided is when the incident light makes about equal angles with two of its sides. I then found that the spaces AB, BC, CD, DE, occupied by them, were nearly as the numbers 16, 23, 36, 25.