The Popular Science Monthly, Volum 17D. Appleton, 1880 |
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Side 14
... pressure to which they are subjected - a thing which he had acci- dentally discovered while constructing some apparatus for artificial cables about four years before . He immediately set to work to con- struct an instrument . A ...
... pressure to which they are subjected - a thing which he had acci- dentally discovered while constructing some apparatus for artificial cables about four years before . He immediately set to work to con- struct an instrument . A ...
Side 15
... pressure only . C is a piece of carbon placed between two metallic plates which are con- nected with the battery , B , in whose circuit is also the galvanom- eter G. As the current passes it must go through the carbon , the pressure on ...
... pressure only . C is a piece of carbon placed between two metallic plates which are con- nected with the battery , B , in whose circuit is also the galvanom- eter G. As the current passes it must go through the carbon , the pressure on ...
Side 16
... pressure , is due to the increase or diminution of the number of particles brought into contact with each other . On this account a given change of pressure will show a greater change of resistance in carbon than in any other substance ...
... pressure , is due to the increase or diminution of the number of particles brought into contact with each other . On this account a given change of pressure will show a greater change of resistance in carbon than in any other substance ...
Side 17
... pressure upon the carbon , and corresponding variations in the strength of the current which traverses the wire . At the receiving station an instrument similar to the one already described , invented by Gray , may be used . At first ...
... pressure upon the carbon , and corresponding variations in the strength of the current which traverses the wire . At the receiving station an instrument similar to the one already described , invented by Gray , may be used . At first ...
Side 18
... pressure only , there would be no need of having a vibrating diaphragm at all . A heavy diaphragm was therefore constructed and rigidly fastened to the carbon disk , so that the loudest tones would produce no vibration in it . With this ...
... pressure only , there would be no need of having a vibrating diaphragm at all . A heavy diaphragm was therefore constructed and rigidly fastened to the carbon disk , so that the loudest tones would produce no vibration in it . With this ...
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Vanlige uttrykk og setninger
acid action Airolo animals appear become Belemnite Berzelius birds body called carbon Catskills cause cent character chemical chemistry cinchona color condition course cyanic acid disease earth effect existence exogamous experiments eyes fact feeling feet force G. P. Putnam's Sons geological give Goethe human hundred idea important inches influence insects interest investigation Kearney larvæ lava less light liquid mass matter means ment method metres microliths mind moral mountains movement natural objects observations organs Origin of Species original passed persons phenomena physical plants political polyandry possess premature burials present pressure principles produced Professor question race radicles regard remarkable River rocks Salpêtrière scientific society species supposed surface temperature tendrils theory things tion tribes truth Wöhler Yale College York Zadig
Populære avsnitt
Side 494 - That man, I think, has had a liberal education who has been so trained in youth that his body is the ready servant of his will, and does with ease and pleasure all the work that as a mechanism it is capable of; whose intellect is a clear, cold logic engine with all its parts of equal strength and in smooth working order; ready like a steam engine to be turned to any kind of work, and spin the gossamers as well as forge the anchors of the mind...
Side 786 - Discoursed with Mr. Hooke about the nature of sounds, and he did make me understand the nature of musicall sounds made by strings, mighty prettily; and told me that having come to a certain number of vibrations proper to make any tone, he is able to tell how many strokes a fly makes with her wings, those flies that hum in their flying, by the note that it answers to in musique, during their flying. That, I suppose, is a little too much refined; but his discourse in general of sound was mighty fine.
Side 338 - History warns us, however, that it is the customary fate of new truths to begin as heresies and to end as superstitions...
Side 103 - Shells hang at the Tree by a Neck longer than the Shell. Of a kind of Filmy substance, round, and hollow, and creassed, not unlike the Wind-pipe of a Chicken ; spreading out broadest where it is fastened to the Tree, from which it seems to draw and convey the matter which serves for the growth and vegetation of the Shell and the little Bird within it.
Side 101 - ... lace or string : next come the legs of the bird hanging out, and, as it groweth greater, it openeth the shell by degrees, till at length it is all come forth, and hangeth onely by the bill : in short space after it commeth to full maturitie, and falleth into the sea, where it gathereth feathers, and groweth to a fowle bigger than a mallard, and lesser than a goose...
Side 145 - I may as well abruptly avow, as the result of my reading and observation in the matter of education, that I recognize but one mental acquisition as an essential part of the education of a lady or a gentleman, — namely, an accurate and refined use of the mother tongue.
Side 144 - For sale by all booksellers ; or sent by mail, post-paid, on receipt of price. D. APPLETON & CO., Publishers, 1. 3. & 5 BOND STREET, NKW YORK.
Side 312 - And in order thereto, having darkened my chamber, and made a small hole in my window-shuts, to let in a convenient quantity of the sun's light, I placed my prism at its entrance, that it might be thereby refracted to the opposite wall.
Side 800 - On which the comment may be that one who had studied celestial mechanics as much as the reviewer has studied the general course of transformations, might similarly have remarked that the formula — 'bodies attract one another directly as their masses and inversely as the squares of their distances,' was at best but a blank form for solar systems and sidereal clusters.
Side 338 - Origin of Species" is not traceable; the foremost men of science in every country are either avowed champions of its leading doctrines, or at any rate abstain from opposing them; a host of young and ardent investigators seek for and find inspiration and guidance in Mr. Darwin's great work; and the general doctrine of evolution, to one side of which it gives expression, obtains...