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Pągina 297 - That gravity should be innate, inherent and essential to matter so that one body may act upon another at a distance through a vacuum, without the mediation of anything else, by and through which their action and force may be conveyed from one to another is to me so great an absurdity...
Pągina 301 - ... of the principle of the conservation of force. Must we then content ourselves with the naked facts of gravitation, as Comte did, or is it possible to resolve them into a mode of action in harmony with our general experience, and which does not shock our conceptions of matter and force? In 1798, Count Rumford wrote thus: "Nobody surely, in his sober senses, has ever pretended to understand the mechanism of gravitation.
Pągina 297 - The same comparison might be made now, not so much between nationalities as between successive stages of scientific development. At the beginning of this century the universe was as empty as an exhausted receiver: now it has filled up again. Nature's abhorrence of a vacuum has been resuscitated, though for other reasons than those which satisfied the Aristotelians. It is the mathematicians and not the metaphysicians who are now discussing the relative merits of the plenum and the vacuum. Newton in...
Pągina 437 - THE PERIODICITY OF THE SOLAR SPOTS. By JOHN BROCKLESBY, of Hartford, Ct. THE researches of scientists, especially of late, lead to the conclusion that there is an intimate connection, more or less marked, between the solar disturbances and various terrestrial phenomena. Thus, upon comparing the mean daily range of the magnetic declination, and also the number of auroras observed each year, with the extent of the spots on the solar disk, a striking correspondence is observed in the curves which respectively...
Pągina 164 - ... the atmosphere; and other matters analogous to these. The Association will endeavor also to secure uniformity of usage in regard to standard points of reference, or to those physical conditions to which observations must be reduced for purposes of comparison; especially the temperature and pressure to which are referred the specific gravities of bodies, and the zero of longitude on the earth.
Pągina 304 - ... the first, the material fabric which we have constructed still demands outward support. Thomson calculates that, within the historical period, the sun has emitted hundreds of times as much mechanical energy as is contained in the united motions of all the planets. This energy, he says, is dissipated more and more widely through endless space, and never has been, probably never can be, restored to the sun, without acts as much beyond the scope of human intelligence as a creation or annihilation...
Pągina 162 - 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.
Pągina 76 - Outlines of Proximate Organic Analysis, for the Identification, Separation, and Quantitative Determination of the more commonly occurring Organic Compounds.
Pągina 80 - It cannot be too soon understood that science is one, and that whether we investigate language, philosophy, theology, history, or physics, we are dealing with the same problem, culminating in the knowledge of ourselves. Speech is known only in connection with the organs of man, thought in connection with his brain, religion as the expression of his aspirations, history as the record of his deeds, and physical sciences as the laws under which he lives.