A Treatise on Electricity and Magnetism, Τόμος 1Clarendon, 1904 |
Άλλες εκδόσεις - Προβολή όλων
A Treatise on Electricity and Magnetism, Τόμος 1 James Clerk Maxwell Περιορισμένη προεπισκόπηση - 1954 |
Συχνά εμφανιζόμενοι όροι και φράσεις
A₁ action angle axis called centre charge closed curve closed surface coefficients coefficients of potential components conducting conductor constant denote density dielectric differential dimensions direction discharge disk distribution of electricity dv dv dx dx dx dy dz e₁ elec electric displacement electric force electrified bodies electrodes electrolyte electromotive force electromotive intensity element energy equal equipotential surfaces expressed finite fluid function given Green's Theorem Hence images insulated integral inverse k₁ k₂ Laplace's equation line-integral lines of force magnetic mathematical measured medium metal method negative normal opposite particles phenomena placed plane polarization positive electricity potential produce quantity of electricity Quaternions radius region resistance resultant force solenoidal solid harmonic space sphere spherical harmonics spherical surface substance suppose surface-density surface-integral Theorem theory Thomson tricity unit of electricity vector vessel volume-integral wire zero zonal harmonic
Δημοφιλή αποσπάσματα
Σελίδα 158 - I have not been able to make the next step, namely, to account by mechanical considerations for these stresses in the dielectric. I therefore leave the theory at this point, merely stating what are the other parts of the phenomenon of induction in dielectrics.
Σελίδα ix - I also found that several of the most fertile methods of research discovered by the mathematicians could be expressed much better in terms of ideas derived from Faraday than in their original form. The whole theory, for instance, of the potential, considered as a quantity which satisfies
Σελίδα 470 - exchanged. The rule therefore for obtaining the greatest galvanometer deflexion in a given system is as follows: Of the two resistances, that of the battery and that of the galvanometer, connect the greater resistance so as to join the two greatest to the two least of the four other resistances.
Σελίδα 61 - in the same sense as the transference of a definite quantity of electricity, through a wire is a movement of electricity, the only difference being that in the dielectric there is a force which we have called electric elasticity which acts against the electric displacement, and forces the electricity back when the electromotive force is removed;
Σελίδα 29 - constant. II. When one body electrifies another by conduction, the total electrification of the two bodies remains the same, that is, the one loses as much positive or gains as much negative electrification as the other gains of positive or loses of negative electrification. For if
Σελίδα 53 - These, and many other phenomena of electrical discharge, are exceedingly important, and when they are better understood they will probably throw great light on the nature of electricity as well as on the nature of gases and of the medium pervading space. At present, however, they must be considered as outside the domain of the mathematical theory of electricity.
Σελίδα 29 - I. The total electrification of a body, or system of bodies, remains always the same, except in so far as it receives electrification from or gives electrification to other bodies. In all electrical experiments the electrification of bodies is found to change, but it is always found that this change is due to want of perfect insulation, and that
Σελίδα 371 - But if we go on, and assume that the molecules of the ions within the electrolyte are actually charged with certain definite quantities of electricity, positive and negative, so that the electrolytic current is simply a current of convection, we find that this tempting hypothesis leads us into very difficult ground.
Σελίδα 389 - the current flows only when the battery is in action. In all forms of Daniell's battery the final result is that the sulphate of copper finds its way to the zinc and spoils the battery. To retard this result indefinitely, Sir W. Thomson * has constructed Daniell's battery in the following form.
Σελίδα 157 - It must be carefully borne in mind that we have made only one step in the theory of the action of the medium. We have supposed it to be in a state of stress, but we have not in any way accounted