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 Seiten |
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Ergebnisse 1-5 von 29
Seite 80
... widening out cannot be given until the Kew records are reduced , but it is believed that at the present moment , or very recently , there has been a similar phenomenon . Thus while , gene- rally speaking , spots attach themselves to the ...
... widening out cannot be given until the Kew records are reduced , but it is believed that at the present moment , or very recently , there has been a similar phenomenon . Thus while , gene- rally speaking , spots attach themselves to the ...
Seite 125
... widening the range of knowledge , and the fear of losing a single precious instant , are not calculated to steady either the hand or the eye , and it is no discredit . to these men to point out that the results they obtained . were ...
... widening the range of knowledge , and the fear of losing a single precious instant , are not calculated to steady either the hand or the eye , and it is no discredit . to these men to point out that the results they obtained . were ...
Seite 165
... widening out the spectrum - this is done by a cylindrical lens ; and ( 2 ) for obtaining a spectrum of comparison- this is done by reflecting into the instrument the light of the vapours to be compared , rendered incandescent by an ...
... widening out the spectrum - this is done by a cylindrical lens ; and ( 2 ) for obtaining a spectrum of comparison- this is done by reflecting into the instrument the light of the vapours to be compared , rendered incandescent by an ...
Seite 219
... widening out as the sun was approached . I will now , then , for one moment leave the observatory work to say a word on some results recently obtained by Dr. Frankland and myself , in the researches on the radi- ation and absorption of ...
... widening out as the sun was approached . I will now , then , for one moment leave the observatory work to say a word on some results recently obtained by Dr. Frankland and myself , in the researches on the radi- ation and absorption of ...
Seite 233
... widening out , equally or nearly so , on both sides the F line when the pressure of the gas has been increased . You see now on the screen ( Fig . 96 ) a diagram showing the strange contortions which the F hydrogen line undergoes at ...
... widening out , equally or nearly so , on both sides the F line when the pressure of the gas has been increased . You see now on the screen ( Fig . 96 ) a diagram showing the strange contortions which the F hydrogen line undergoes at ...
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Häufige Begriffe und Wortgruppen
absorption angle Ångström appearance astronomers Balfour Stewart bien bright lines brilliant changes CHAP chromosphere cloud coincident colour Comptes Rendus continuous spectrum corona dark lines disc dispersion distance energy envelope evidence F line fact faculæ Father Secchi Frankland Fraunhofer lines gaseous give glass heat height Huggins hydrogen hydrogen lines incandescent indicated instrument j'ai Janssen jets John Herschel Kirchhoff layers les raies less light lignes Lockyer luminous magnesium masses ment method moon motion nences NOTE observed PAPER penumbra period phenomena photographs photosphere polariscope polarization poles portion position prism prominences qu'il question radiation raie rays referred refrangible region régions remark 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 taches telescope temperature tion total eclipse tube umbra vapour violet visible wave-length widening
Beliebte Passagen
Seite 96 - 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.
Seite 207 - 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.
Seite 17 - 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.
Seite 437 - ... red flames" which total eclipses have revealed to us in the sun's atmosphere, although they escape all other methods of observation at other times?
Seite 521 - ... 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...
Seite 394 - 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.
Seite iii - 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.
Seite 70 - A few seconds before the commencement of the totality, the stars burst out, and surrounding the dark Moon on all sides is seen a glorious halo, generally of a silver-white light; this is called the Corona. It is slightly radiated in structure, and extends sometimes beyond the Moon to a distance equal to our satellite's diameter. Besides this, rays of light, called Aigrettes, diverge from the Moon's edge, and appear to be shining through the light of the corona.
Seite 17 - ... do at the edge of a deep hole of clear water. The exceedingly definite shape of these objects; their exact similarity one to another; and the way in which they lie across and athwart each other (except where they form a sort of bridge across a spot, in which case they seem to affect a common direction, that, namely, of the bridge itself),—all these characters seem quite repugnant to the notion of their being of a vaporous, a cloudy, or a fluid nature.
Seite 213 - F line were phenomena depending on and indicating varying pressures, 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.