The Unity of Natural Phenomena: A Popular Introduction to the Study of the Forces of Nature

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Estes and Lauriat, 1873 - 247 páginas
 

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Página 10 - The intellect knows no difference between great and small : it is just as easy, as an intellectual act, to conceive of a vibrating atom as to conceive of a vibrating cannon-ball ; and there is no more difficulty in conceiving of this Ether, as it is called, which fills space, that in imagining all space to be filled with jelly.
Página 255 - Handbook of Hardy Trees, Shrubs, and Herbaceous Plants ; containing Descriptions, Native Countries, &c. of a selection of the Best Species in Cultivation ; together with Cultural Details, Comparative Hardiness, suitability for particular positions, &c. Based on the French Work of Messrs. DECAISNE and NAUDIN, intitled ' Manuel de 1" Amateur des Jardins,' and including 720 Woodcut Illustrations by Riocreux and Leblanc.
Página 253 - It supplies a want which has long been felt, and ought to be in the hands of all students of history.
Página 116 - ... The available energy of the food is the total heat of combustion of the food minus the heat of combustion of the unoxidized materials of feces and urine. No further correction for the labor of chewing and digesting is included.
Página 15 - In one word, all these facts, in their natural connection, proclaim aloud the One God, whom man may know, adore, and love; and Natural History must, in good time, become the analysis of the thoughts of the Creator of the Universe, as manifested in the animal and vegetable kingdoms, as well as in the inorganic world.
Página 257 - MD 369 imperial octavo pages. Illustrated by 6 Steel Plates, and 238 Wood-Cuts. A Manual or Text-Book of the Birds of North America; containing a Synopsis of Living and Fossil Birds, and Descriptions of every North American Species known to this Time.
Página 80 - When a luminous beam impinges at the proper angle on a plane glass surface, it is polarized by reflection. It is polarized, in part, by all oblique reflections, but at one particular angle the reflected light is perfectly polarized. An exceedingly beautiful and simple law, discovered by Sir David Brewster, enables us readily to find the polarizing angle of any substance whose refractive index is known. This law was discovered experimentally by Brewster, but the Wave Theory of light renders a complete...
Página 158 - ... membranes to the more delicate will be of a different kind. Whatever the eye perceives in the ether, this the ear perceives in the air ; whatever the ether presents to our organs by means of colours, the air presents to us by means of modulations and sounds. Thus nature is always the same, always identical with herself both in light and in sound, in the eye and in the ear ; the only difference being that in one she is quicker and more subtle, in another slower and less subtle, exhibiting herself...
Página 255 - HANDBOOK of HARDY TREES, SHRUBS, and HERBACEOUS PLANTS, containing Descriptions, Native Countries, &c. of a Selection of the Best Species in Cultivation ; together with Cultural Details, Comparative Hardiness, Suitability for Particular Positions, &c. By WB HEMSLEY. Based on DECAISNE and NAUDIN'S Manuel de I' Amateur des Jardins, and including the 264 Original Woodcuts.

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