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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Seite 11
... stratum , or planetary cloud envelope ; A , Spot with nucleus ( umbra ) and penumbra ; B , Spot with nucleus ( umbra ) without penumbra ; c , Penumbra without nucleus ( umbra ) , or " shallow . " Although it is possible that we may here ...
... stratum , or planetary cloud envelope ; A , Spot with nucleus ( umbra ) and penumbra ; B , Spot with nucleus ( umbra ) without penumbra ; c , Penumbra without nucleus ( umbra ) , or " shallow . " Although it is possible that we may here ...
Seite 22
... stratum ( or umbra ) , and looking much like a piece of coarse thatching with straw , the edge of which has been left untrimmed . ' After nearly twelve years of care- ful observation of the same phenomena , I do not think I could ...
... stratum ( or umbra ) , and looking much like a piece of coarse thatching with straw , the edge of which has been left untrimmed . ' After nearly twelve years of care- ful observation of the same phenomena , I do not think I could ...
Seite 24
... stratum is actually constituted like our clouds , the only difference being that the clouds on the earth are of watery drops or crystals , and in the sun they are of some other substance.'2 Herschel believes the willow- leaves to be ...
... stratum is actually constituted like our clouds , the only difference being that the clouds on the earth are of watery drops or crystals , and in the sun they are of some other substance.'2 Herschel believes the willow- leaves to be ...
Seite 45
... stratum , lying between the Herschel's nucleus and the photosphere . This stratum was eminently reflective , though not self - luminous , like the photosphere . Wilson's gaseous eruption , the bursting of which through the photosphere ...
... stratum , lying between the Herschel's nucleus and the photosphere . This stratum was eminently reflective , though not self - luminous , like the photosphere . Wilson's gaseous eruption , the bursting of which through the photosphere ...
Seite 49
... stratum . On this hypothesis we can understand the narrow limits within which the spots appear , reasoning by analogy from the monsoon regions of the earth , which are those infested by cyclones ; and further sun - spots would be ...
... stratum . On this hypothesis we can understand the narrow limits within which the spots appear , reasoning by analogy from the monsoon regions of the earth , which are those infested by cyclones ; and further sun - spots would be ...
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Häufige Begriffe und Wortgruppen
absorption angle Ångström appearance astronomers Balfour Stewart bright lines brilliant centre CHAP chromosphere cloud coincident colour Comptes Rendus continuous spectrum corona cyclone dark lines disc dispersion distance edge energy envelope evidence F line fact faculæ Father Secchi Faye Frankland Fraunhofer lines gaseous give glass heat height Herschel hydrogen hydrogen lines incandescent instrument j'ai Janssen John Herschel Kirchhoff les raies less light lignes limb Lockyer luminous magnesium masses ment method moon motion nences NOTE observed PAPER penumbra period phenomena photographs photosphere polariscope polarization portion position prism prominences protuberances question radiation rays red flames referred refraction refrangible region remark Respighi rotation Royal Society seen side slit sodium solar atmosphere solar spectrum spec spectra spectroscope sphere spots stratum substance sun-spots sun's atmosphere surface taches telescope temperature theory tion total eclipse tube umbra vapour violet visible wave-length
Beliebte Passagen
Seite 102 - 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 211 - 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 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 443 - ... 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 193 - 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.
Seite 527 - ... 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 220 - I need hardly point out to you that the determination of the above-mentioned facts leads us necessarily to several important modifications of the received theory of the physical constitution of our central luminary — the theory which we owe to Kirchhoff, who based it upon his examination of the solar spectrum.
Seite 76 - 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 20 - ... 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 219 - 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.