Memoirs of the Royal Astronomical Society, Volume 36; Volumes 1866-1867
Priestley and Weale, 1867
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angle aperture appeared Astronomer atmosphere August bodies bright calculated centre close clouds colour comet compared conjunction continued correction course dark Date determined diameter difficult direction disk distance double Earth east Eclipse edge effect elements error faint fully give given glass inches interest Jupiter length less letter light limb lines longitude magnitude March marked Mars mass mean measures meteors micrometer minute Moon motion nearly Nebula night noted noticed November object observations Observatory obtained orbit passed past period planet portion position preceding present probably produced Professor reference remarkable ring Royal satellites seen short side Society Solar spectra spectrum stars stell surface taken telescope tion train visible White
Page 3 - All these facts are comprehended in the statement that in a constant temperature the absorption of a particle is equal to its radiation, and that for every description of light. It was also noticed that all coloured glasses ultimately lose their colour in the fire as they approach in temperature the coals around them, the explanation being, that while red glass, for instance, gives out a greenish light, it passes red light from the coals behind it, while it absorbs the green...
Page 26 - Clusters (Cl.) are members of the Via Lactea, and are nearer to us than the average of its faint stars. 2. The Nebulae resolved and unresolved lie in general without the Via Lactea, which is therefore essentially stellar. 3. The visible universe is composed of systems, of which the Via Lactea, the two Nubecula, and the Nebulae, are the individuals, and which are themselves composed of stars (either simple, multiple, or in clusters) and of gaseous bodies of both regular and irregular outlines.
Page 7 - That these lines were not produced by the portion of the earth's atmosphere through which the light of Mars had passed, was shown by the absence of similar lines in the spectrum of the moon, which, at-the time of observation, had a smaller altitude than Mars.
Page 8 - ... with particular portions of the planetary surface. The evidence we possess at present appears to support the opinion that the planet's distinctive colour has its origin in the material of which some parts of its surface are composed. Mr. Lockyer's observation, that the colour is most intense when the planet's atmosphere is free from clouds, obviously admits of an interpretation in accordance with this view.
Page 18 - Mariners 6 and 7 have been used to obtain values for the ratio of the mass of the Earth to that of the Moon which are in substantial agreement with those determined from other Mariner and Pioneer spacecraft.
Page 3 - ... have its temperature raised by light from the source, of the precise quality in question. In the atmosphere around the sun, therefore, there must be present vapour of sodium, which, according to the mechanical explanation thus suggested, being particularly opake for light of that quality, prevents such of it as is emitted from the sun from penetrating to any considerable distance through the surrounding atmosphere.