Electricity: Its Theory, Sources, and ApplicationsE. & F.N. Spon, 1884 - 650 pagine |
Parole e frasi comuni
actual ampère anode armature arranged atoms attraction battery capacity carbon cathode cell charge chemical action chemical affinity chloride circuit coils conductor connected copper current passes cyanide cylinder Daniell cell deflection deposit dielectric direction discharge dissolved distance earth ebonite effect electric current electro-magnet electrodes electrolyte electromotive force employed energy equal equivalent equivolt external fact field foot-lbs formula galvanometer gives glass grains gramme heat hydrochloric acid hydrogen inch inductive instrument insulated iron length Leyden jar light lines of force liquid machine magnet means measured mercury metal molecular molecules motion needle negative nitric acid ordinary oxygen paraffin plate platinum polarization poles porous potential principles produced quantity radicals ratio relation resistance salt screws shown silver solution square substances sulphate sulphuric acid surface temperature theory tion tricity tube unit varies velocity volts weight wire zinc
Brani popolari
Pagina 230 - A unit pole is that which repels another similar and equal pole at a distance of one centimetre with a force of one dyne.
Pagina 25 - ... is determined by the equilibration of these two forces. If the atoms come too near, repulsion predominates and drives them apart ; if too distant, attraction predominates and draws them together. The point at which attraction and repulsion are equal to each other is the atom's position of equilibrium. If not absolutely cold— and there is no such thing as absolute coldness in our corner of nature — the atoms are always in a state of vibration, their vibrations being executed to and fro across...
Pagina 25 - ... members of this group part company ? The molecules do separate from each other when the external pressure is lessened or removed, but the atoms do not. The reason of this stability is that two forces, the one attractive and the other repulsive, are in operation between every two atoms...
Pagina 16 - Static Electricity is, however, a misnomer : it has no existence : all the phenomena are due to static strains, but there is always a gradual loss called leakage, which is, however, the current due to the actual conductivity of all circuits, and every motion set up by so-called static electricity implies a transfer of energy and action occurring in a field of force set up in the form of strains in the particular inductive circuit in which the motions occur."4 A third objects to the word "tension...
Pagina 451 - ... draws near, the pith balls suspended from the conductor open wide, with either positive or negative Electricity ; and when the edge of the cloud is perpendicular to the exploring wire, a slow succession of discharges takes place between the brass ball of the conductor and one of equal size, carefully connected with the nearest spot of moist ground. I usually connect a large jar with the conductor, which increases the force...
Pagina 20 - In the larger treatise I sometimes made use of methods which I do not think the best in themselves, but without which the student cannot follow the investigations of the founders of the Mathematical Theory of Electricity. I have since become aware of the superiority of methods akin to those of Faraday, and have therefore adopted them from the first.
Pagina 624 - or " cation," and " ions." Take, for example, the definition given by Sprague* of " anode " : " The positive electrode or pole of a battery ; the wire or plate connected to the copper or other negative element of the battery ; the plate which leads the + current into a solution to be decomposed, and at which are set free the oxygen, acid radicals and all — ions (anions).