# A treatise on the theory of alternating currents, Volume 1

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Page 100 - Plot the locus of a point which moves so that the ratio of its distances from two fixed points remains constant.
Page 262 - From equations (1) and (2) it is evident that the ratio of the number of turns in the primary to the number of turns in the secondary...
Page 27 - It differs from the dynamo rule, only 'in that it is applied to the fingers of the left hand instead of to those of the right. Let the forefinger of the left hand point in the direction of the magnetic lines of force and the middle finger in the direction of the current sent through the wire; the thumb will then point in the direction of the mechanical force acting to move the wire (see Fig.
Page 222 - ... any one of them is equal and opposite to the resultant of the other two.
Page 13 - COS ~ (vt ~ r) in which a is the angle between the direction of the force and the radius vector, r, that connects the centre of the force with the point at which the displacement is observed. On substituting for the force F cos — jp- its value, one finds that . D...
Page 91 - The Capacity of a conductor is its charge when its own potential is unity, and that of all the other conductors is zero.
Page 11 - Coulomb- -the force between two magnetic poles is proportional to the product of the strengths of the poles and inversely proportional to the square of the distance between them.
Page 210 - ... us before this Society on March 6th it was pointed out that for every problem involving alternate P.Ds. in series there was an analogous problem involving alternate currents in parallel. This general proposition tells us that we can transform each of the PD equations given, for example, in our paper on " The Measurement of the Power given by any Electric Current to any Circuit...
Page 211 - Now let T be any value of t so large that /8 has become sensibly constant, and 7 has subsided to zero. We have This shows that the time-integral of the induced current in the secondary circuit would depend solely on...