Proceedings of the American Association for the Advancement of Science, Τεύχος 291881 |
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Άλλες εκδόσεις - Προβολή όλων
Proceedings of the American Association for the Advancement of Science, Τεύχος 9 Πλήρης προβολή - 1856 |
Συχνά εμφανιζόμενοι όροι και φράσεις
abactinal acid actinal action animal apparatus Association ATURE binary stars Boston Cambridge cells centre chemical COEFF coefficient of friction color comet Committee Conn determine Died direction disk distance effect electric empty pipette experiments F. W. Putnam fact feet force FRIC Frictional test genera gens glass glucose heat Henry inch increase insects investigation John kame larvæ light liquid Louis lubricant luminiferous ether magnet Mass maxillæ means method molecular molecules motion mounds Nashville nature nearly observations obtained Ohio organs ovipositor paper perihelion Philadelphia plant plates present pressure per sq produced Prof Professor required to empty sample scientific Seconds required Secretary selenium shell species specific gravity specimens Spindle spot stars substance TEMPER temperature Tenn theory tion tube Valvoline vapor Velocity of rubbing Washington wire York
Δημοφιλή αποσπάσματα
Σελίδα 741 - It has lengthened life ; it has mitigated pain ; it has extinguished diseases ; it has increased the fertility of the soil ; it has given new securities to the mariner ; it has furnished new arms to the warrior ; it has spanned great rivers and estuaries with bridges of form unknown to our fathers; it has guided the thunderbolt innocuously from heaven to earth ; it has lighted up the night with the...
Σελίδα 741 - ... of business; it has enabled man to descend to the depths of the sea, to soar into the air, to penetrate securely into the noxious recesses of the earth, to traverse the land in cars which whirl along without horses, and the ocean in ships which run ten knots an hour against the wind; These are but a part of its fruits, and of its first fruits.
Σελίδα 771 - Technology, for the purpose of instituting and maintaining a society of arts, a museum of arts, and a school of industrial science, and aiding generally, by suitable means, the advancement, development and practical application of science in connection with arts, agriculture, manufactures and commerce...
Σελίδα 92 - ... a quick and sagacious penetration into the true essence of all the objects of our contemplation. This, I think, can rarely exist without the concomitancy of judgment, for how we can be said to have discovered the true essence of two things, without discerning their difference, seems to me hard to conceive. Now this last is the undisputed province of...
Σελίδα 93 - Do not suppose that I was a very deep thinker, or was marked as a precocious person. I was a very lively, imaginative person, and could believe in the Arabian Nights as easily as in the Encyclopaedia ; but facts were important to me and saved me.
Σελίδα 81 - From the foregoing facts it appears that a current of electricity is produced, for an instant, in a helix of copper wire surrounding a piece of soft iron whenever magnetism is induced in the iron; and a current in an opposite direction when the magnetic action ceases; also that an instantaneous current in one or the other direction accompanies every change in the magnetic intensity of the iron.
Σελίδα 571 - Colombia was, by reason of her own delay, to be placed in the "more advantageous" position of claiming not merely the compensation to be paid by the United States for the privilege of completing the canal, but also the...
Σελίδα 131 - L Street, at a distance of 213 metres. -Upon placing the telephone to my ear, I heard distinctly from the illuminated receiver the words, " Mr. Bell, if you hear what I say, come to the window and wave your hat.
Σελίδα 782 - ARBORETUM, which shall contain, as far as is practicable, all the trees, shrubs, and herbaceous plants, either indigenous or exotic, which can be raised in the open air...
Σελίδα 288 - I said, Days should speak, and multitude of years should teach wisdom. But there is a spirit in man : and the inspiration of the Almighty giveth them understanding.