Proceedings of the Electrical Section of the Franklin Institute, Bände 1-3Franklin Institute., 1892 |
Häufige Begriffe und Wortgruppen
action alternating current ampères apparatus armature battery binding posts bridge wire carbon Carl Hering cause cell cent centre chloride coil committee commutator conductor connected constant copper Coulomb curve deflection depolarizer diameter difference of potential direction discharge dynamo dynamotor Edwin effect Electrical Section electro-magnetic electro-motive force electrode electrolyte Elihu Thomson energy ether experiments FRANKLIN INSTITUTE galvanometer give held Tuesday Houston inches increase induction instrument insulation ions iron kinematic L. F. RONDINELLA light lines of force liquid machine magnetic circuit magnetic field maximum means measured mechanism members and visitors ment metal method Millimetres motion motor needle negative obtained paper PHILADELPHIA plate plunger polarization poles polyphased polyphased system position present produced Prof R₁ R₂ read and approved Referred for publication resistance rotating brush Secretary shows shunt silver silver chloride solenoid standard Street surface three-phase tion transmission tube velocity voltage volts Willyoung zinc
Beliebte Passagen
Seite 64 - ... an instrument by the help of which the direction and velocity of a given motion can be altered.
Seite 177 - ... is the mass per unit cube. Now in ordinary commercial instruments it is important that the period of oscillation should not be inconveniently long, and that the power consumed by the instrument should be as small as possible ; then, since for a constant period the controlling moment at unit angle must be proportional to the moment of inertia, the problem resolves itself into finding the shape of the section such that the total deflecting moment for a given total moment of inertia is a maximum....
Seite 8 - A line of magnetic force may be denned to be that line which is described by a very small magnetic needle, when it is so moved in either direction correspondent to its length, that) the needle is constantly a tangent to the line of motion...
Seite 32 - Present, thirty-four members and visitors. The minutes of the previous meeting were read and approved. The Treasurer reported a cash balance of $59.92 in the treasury, and presented bills for printing amounting to $35.51, which were ordered paid.
Seite 144 - For though the effluvia of cinnamon, and the electric fluid should mix within the globe, they would never come out together through the pores of the glass, and so go to the prime conductor; for the electric fluid itself cannot come through; and the prime conductor is always supply'd from the cushion, and that from the floor.
Seite 114 - ... with respect to the ground.... It is not clearly proven that a pure gas, rarefied or not, can receive and convey a charge. If we imagine a charged drop of water suspended in air and evaporating, it follows that, unless the charge be carried off in the vapour, the potential of the drop would rise steadily as its surface diminished, and would become infinite as the drop disappeared, unless the charge were dissipated before the complete drying up of the drop by dispersion of the drop itself, or...
Seite vi - ... such town, for the use of the poor thereof, pursuant to any law or obligation requiring the same to be paid to such overseers, and credited by such county treasurer to the town for whose use such moneys were received or owing. Any overseer or other person having received or owing such moneys, who shall neglect or refuse to pay the same within thirty days after demand thereof, shall be liable to an action therefor, with interest at the rate of ten per cent thereon, by such county treasurer, in...
Seite 8 - FROM my earliest experiments on the relation of electricity and magnetism (114. note), I have had to think and speak of lines of magnetic force as representations of the magnetic power ; not merely in the points of quality and direction, but also in quantity. The necessity I was under of a more frequent use of the term in some recent researches (2149. &c.), has led me to believe that the time has arrived, when the idea conveyed by the phrase should be stated very clearly, and should also be carefully...
Seite 47 - ... (1) That rain can never be made to fall at will by midair explosions on any part of the earth's surface, irrespective of the climatic conditions there existing. (2) That during certain meteorological conditions, midair explosions may result in rainfall over extended areas. (3) That the liberation of energy necessary for such rainfalls is due not to the mid-air explosions, but to the energy stored up in the moist air from which the rain is derived. (4) That the meteorological conditions which...
Seite 70 - Partridge was appointed Secretary pro tem. The reading of the minutes of the previous meeting was dispensed with. The names of Mr.