Popular Lectures on Science and Art: Delivered in the Principal Cities and Towns of the United States, Volume 1Greeley & McElrath, 1850 - Astronomy |
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Page 105
... electrified body , it will not be again attracted , but , on the contrary , will be repelled by the same body ; but that after it has been touched by the hand , its primitive condition is restored , and it is again attracted . He also ...
... electrified body , it will not be again attracted , but , on the contrary , will be repelled by the same body ; but that after it has been touched by the hand , its primitive condition is restored , and it is again attracted . He also ...
Page 107
... electrified , and that , on preserving them from exposure to the air , by wrapping them in paper or wool , this electrified state continued for an indefinite time . In the case of sulphur , he found that not only the sulphur was ...
... electrified , and that , on preserving them from exposure to the air , by wrapping them in paper or wool , this electrified state continued for an indefinite time . In the case of sulphur , he found that not only the sulphur was ...
Page 108
... electrified , the Abbé Nollet , who assisted him in these experiments , presented his hand to his body , when immediately a spark of fire issued from the person of the one philosopher and entered the body of the other . Although such a ...
... electrified , the Abbé Nollet , who assisted him in these experiments , presented his hand to his body , when immediately a spark of fire issued from the person of the one philosopher and entered the body of the other . Although such a ...
Page 109
... electrified ; but it was necessary to know with which of the two kinds of electricity it was in- vested . The test of this proposed by Dufaye was the same which has ever since his time been adhered to . He electrified a light substance ...
... electrified ; but it was necessary to know with which of the two kinds of electricity it was in- vested . The test of this proposed by Dufaye was the same which has ever since his time been adhered to . He electrified a light substance ...
Page 110
... electrified bodies exposed to the atmosphere speedily lost their electric virtue , which was supposed to be abstracted by the air itself , and by vapor and effluvia suspended in it , imagined that if they could surround them with any ...
... electrified bodies exposed to the atmosphere speedily lost their electric virtue , which was supposed to be abstracted by the air itself , and by vapor and effluvia suspended in it , imagined that if they could surround them with any ...
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POPULAR LECTURES ON SCIENCE &, Volume 2 Dionysius 1793-1859 Lardner,Redfield &. Savage (1846) Bkp Cu-Banc No preview available - 2016 |
Common terms and phrases
acid alkali apparent magnitude appear Arago ascertained astronomical atmosphere attraction barometer body cause centre circumstances clouds color comet conductor consequently degree diameter direction discovery disk distance diurnal motion earth eclipse effect electricity electrified equal experiments fact fluid force glass globe greater Halley's comet heat height hemisphere Herschel hundred inch increased interval John Herschel Jupiter less Leyden jar light liquid luminous lunar lunar phases magnitude mercury metallic meteors millions of miles motion move nature nearly negative object observed orbit pass phenomena physical pile planet pole position present principle produced proportion quantity radiation rays reflected rendered revolves round the sun Saturn seen Sir William Herschel solar solar eclipse solar system space stars substances sun's supposed surface telescope temperature theory thermometer thunder tides tion tricity tube vapor velocity vessel visible Voltaic Voltaic pile weather wire zenith zinc
Popular passages
Page 429 - In the six hundredth year of Noah's life, in the second month, the seventeenth day of the month, the same day were all the fountains of the great ° deep broken up, and the J windows of heaven were opened.
Page 121 - If any danger to the man should be apprehended (though I think there would be none), let him stand on the floor of his box, and now and then bring near to the rod the loop of a wire that has one end fastened to the leads, he holding it by a wax handle ; so the sparks, if the rod is electrified, will strike from the rod to the wire, and not affect him.
Page 121 - To determine the question, whether the clouds that contain lightning are electrified or not, I would propose an experiment to be tried where it may be done conveniently.
Page 25 - The square of the hypotenuse of a right-angled triangle is equal to the sum of the squares of the other two sides.
Page 122 - With this apparatus, on the appearance of a thunder-gust approaching, he went out into the commons, accompanied by his son," to whom alone he communicated his intentions, well knowing the ridicule which, too generally for the interest of science, awaits unsuccessful experiments in philosophy.
Page 121 - ... rods a wire down the outside of the building into the ground; or down round one of the shrouds of a ship and down her side till it reaches the water?
Page 248 - Saturn, yet micrometrical measurements of extreme delicacy" have demonstrated that the coincidence is not mathematically exact, but that the centre of gravity of the rings oscillates round that of the body, describing a very minute orbit, probably under laws of much complexity.
Page 114 - Electricity, which was more generally read and admired in all parts of Europe than these letters. There is hardly any European language into which they have not been translated...
Page 121 - ... feet, pointed very sharp at the end. If the electrical stand be kept clean and dry, a man standing on it, when such clouds are passing low, might be electrified and afford sparks, the rod drawing fire to him from a cloud.
Page 171 - ... domain of physical science, and clothes the natural philosopher with powers denied to the political and moral inquirer, yet foreknowledge is eminently the privilege of the astronomer. Nature has raised the curtain of futurity, and displayed before him the succession of her decrees, so far as they...