The Galvanic Circuit Investigated MathematicallyD. Van Nostrand Company, 1891 - 269 من الصفحات |
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عبارات ومصطلحات مألوفة
abscissa according actual length atmosphere belonging chemical change chemical decomposition circumstances conductor consequently consideration constant constantly constituents cuit decom decomposing force decomposition deduced denote determined disk distance dry piles elec electric current electric force electromotive force elements equal equation evident experiments expression extent extreme action fluid galvanic circuit galvanometer given greater hitherto homogeneous hydro-circuit inversely latent electroscopic forces lines F G magnitude metals mode multiplier nature negative obtain Ohm's law particles peculiar phenomena place of contact portion position potential power of conduction prismatic body produced proportional quantity of electricity remains represent resistance respect ring scopic force Sect separation simple circuit straight line strength substitute supposition tion tricity u₁ voltaic circuit voltaic combination voltaic pile whence wire βι χω
مقاطع مشهورة
الصفحة 50 - The force of the current in a galvanic circuit is directly as the sum of all the tensions, and inversely as the entire reduced length of the circuit, bearing in mind that at present by reduced length is understood the sum of all the quotients obtained by dividing the actual lengths corresponding to the •homogeneous parts by the product of the corresponding conductivities and sections.
الصفحة 68 - The same quantity of electricity which, passed in a given time, can heat an inch of platina wire of a certain diameter red hot, can also heat a hundred, a thousand, or any length of the same wire to the same degree, provided the cooling circumstances are the same for every part in all cases.
الصفحة 202 - Ohm's Law. The electromotive force acting between the extremities of any part of a circuit is the product of the strength of the current and the Resistance of that part of the circuit. Here a new term is introduced, the Resistance of a conductor, which is defined to be the ratio of the electromotive force to the strength of the current which it produces. The introduction of this term would have been of no scientific value unless Ohm had shewn, as he did experimentally, that it corresponds to a real...
الصفحة 80 - ... circumstances do we obtain in the. form of a current the whole of the electricity produced by the chemical actions going on in the battery. The amount of electricity realized, or, in other words, the force of the current, is equal to the sum of the electromotive forces divided by the sum of the resistances in the circuit. Thus let F denote the actual force of the current, that is, its power to produce heat, magnetism, chemical action, or any of its other effects ; E the electromotive force, and...
الصفحة 101 - It also follows that for this case of electro-chemical decomposition, and it is probable for all cases, that the chemical power, like the magnetic force, is in direct proportion to the absolute quantity of electricity which passes.
الصفحة 14 - ... through the interior of the bodies, and consequently only the smallest portion can enter into mutual action with the air ; so that in this case, the dispersion can comparatively be but very inconsiderable. This consequence, deduced from the nature of the circumstances, is confirmed by experiment ; in it lies the reason why the second law seldom comes into consideration. " The mode in which electricity makes its appearance at the place of contact of two different bodies, or the electrical tension...
الصفحة 18 - One effect, therefore, of imparting heat energy to a substance is to change it from a solid into a liquid or from a liquid into a gas.
الصفحة 101 - ... pole. This fact may be observed by turning the machine for some time; for though bubbles will rise from the point left unaltered, in quantity sufficient to cover entirely the wire used for the other communication, if they could be applied to it, yet not a single bubble will appear on that wire.
الصفحة 51 - ... notions of intensity and quantity which have been so long prevalent, enable us to give satisfactory explanations of most important phenomena, the laws of which have hitherto been involved in obscurity and doubt. Viewing the laws of the electric circuit from the point at which the labours of OHM has placed us, there is scarcely any branch of experimental science in which so many and such various phenomena are expressed by formulae of such simplicity and generality...
الصفحة 100 - ... terms marked a transition from vague ideas of " quantity " and " intensity " to the clear conceptions of potential, electromotive force, current and resistance. The word energy he also used with clear and accurate meaning as is shown in the following statement : " That the decomposing force of the circuit is in direct proportion to the energy of the current, and moreover, that it depends on a coefficient, to be derived from the nature of the constituent parts and their chemical equivalents.