The Annals of Electricity Magnetism and Chemistry and Guardian of Experimental Science, Band 9Sherwood, Gilbert and Piper |
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Seite 29
... portion of the action of the current , and this portion ought to be variable in each case . With a battery of twelve jars I have obtained the following numbers : - Tension of the Battery . 10 ° 20 : - Deflection . 4o 8 TT 30 40 12 16 ...
... portion of the action of the current , and this portion ought to be variable in each case . With a battery of twelve jars I have obtained the following numbers : - Tension of the Battery . 10 ° 20 : - Deflection . 4o 8 TT 30 40 12 16 ...
Seite 34
... portion of the transformed silvery matter is placed between the platinum terminals in a solution of nitrate of silver , those parts of it near to the positive terminal become blackened , but suffer no change by the current when ...
... portion of the transformed silvery matter is placed between the platinum terminals in a solution of nitrate of silver , those parts of it near to the positive terminal become blackened , but suffer no change by the current when ...
Seite 47
... portion at a temperature of 20 ° higher than the preceding , until at last the water is boiled . This patent , like many others , makes a sweeping claim " to cover all the ground , " but it might be restricted to the use of chlorine or ...
... portion at a temperature of 20 ° higher than the preceding , until at last the water is boiled . This patent , like many others , makes a sweeping claim " to cover all the ground , " but it might be restricted to the use of chlorine or ...
Seite 48
... portion of that iron must be rendered insoluble by calcination . In one respect the sulphate of alumina may be more advantageously employed as a mordant or colour - base , than the sulphate of alumina and potassa ( common alum ) , since ...
... portion of that iron must be rendered insoluble by calcination . In one respect the sulphate of alumina may be more advantageously employed as a mordant or colour - base , than the sulphate of alumina and potassa ( common alum ) , since ...
Seite 51
this purpose . The drug is rendered soluble by depriving it of a portion of its oxygen , which element is again absorbed in the subse- quent exposure of the printed fabric to the atmosphere ; and thus the insolubility necessary to ...
this purpose . The drug is rendered soluble by depriving it of a portion of its oxygen , which element is again absorbed in the subse- quent exposure of the printed fabric to the atmosphere ; and thus the insolubility necessary to ...
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Häufige Begriffe und Wortgruppen
ammonia animal apparatus appears atmosphere ball battery body brass carbonic acid cause charge chemical action circuit circumstances clouds coating colour column combustion communication contained copper cylinder decomposed decomposition degree diameter direction discharge distance effect elec electric cloud electric current electric fluid electric matter electrified electrometer electroscope employed equal experiments extremity fact fire force galvanic galvanometer glass gold heat hydrogen hygrometer immersed inches increase insulated intensity iron wire kite length Leyden jar light liquid machine magnetism manner means metal millimetres motion needle negative nitric acid observed obtained oxide oxygen oxygen gas paper particles passing peroxide phenomena Philosophical piece pile plate platina platinum platinum wire polarization pole positive potash potassa precipitated prime conductor produced Professor proportion quantity silver solution spark stannic acid striking substances sulphuric acid supposed surface temperature theory tion tube vapour voltaic whilst zinc
Beliebte Passagen
Seite 427 - ... 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?
Seite 414 - 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.
Seite 151 - By exposure to excessive cold the primitive fungi are killed, but their seed still retains vitality, and, if immersed in snow, which appears to be their native soil, they reproduce new fungi, which are generally of a red colour. The Philosophical Transactions for 1823 contains the paper by Mr. Bauer already alluded to, entitled " Microscopical Observations on the Suspension of the Muscular Motions of the Vibrio tritici," which forms the Croonian Lecture for that year.
Seite 336 - The declaration was in the usual form, and the defendants pleaded thereto, first, that they were not guilty; secondly, that the plaintiff was not the...
Seite 414 - ... or 30 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.
Seite 377 - Fig. 9,) big enough to contain a man and an electrical stand. From the middle of the stand let an iron rod rise and pass bending out of the door, and then upright twenty or thirty feet, pointed very sharp at the end. If the electrical stand be kept clean and dry, a man standing on it, when such...
Seite 484 - ... will give a spark at a greater distance. Two gun-barrels united, and as highly electrified, will give a spark at a still greater distance. But if two gun-barrels electrified will strike at two inches distance, and make a loud snap, to what a great distance may 10,000 acres of electrified cloud strike and give its fire, and how loud must be that crack?
Seite 414 - 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.
Seite 377 - I say, if these things are so, may not the knowledge of this power of points be of use to mankind, in preserving houses, churches, ships, &V. from the stroke of lightning, by directing us to fix on the highest parts of those edifices, upright rods of iron made sharp as a needle, and gilt to prevent rusting, and from the foot of those rods a wire down the outside of the building into the ground, or down round one of the shrouds of a ship...
Seite 73 - The mutual action between the elements of the food and the oxygen conveyed by the circulation of the blood to every part of the body is the source of animal heat. " All living creatures whose existence depends on the absorption of oxygen possess within themselves a source of heat independent of surrounding objects.