Principles of Electricity and Electromagnetism |
From inside the book
Results 1-3 of 80
Page 321
... means of the motor M and v , the number of rotations per second is measured stroboscopically . The two coils A and A ' symmetrically placed on either side of the disk carry a current i which produces an axial field through the disk ...
... means of the motor M and v , the number of rotations per second is measured stroboscopically . The two coils A and A ' symmetrically placed on either side of the disk carry a current i which produces an axial field through the disk ...
Page 326
... means of a fine phosphor - bronze fiber which exerts a smaller restoring torque than the spiral spring used in the pivot type of instrument . The current enters and leaves the coil by means of this fiber and a loose helix of fine wire ...
... means of a fine phosphor - bronze fiber which exerts a smaller restoring torque than the spiral spring used in the pivot type of instrument . The current enters and leaves the coil by means of this fiber and a loose helix of fine wire ...
Page 511
... means the Q values of ordinary circuits can be made to approach those of quartz crystals , but they are less satisfactory for frequency discrimination as a further small decrease in effective resistance results in instability and ...
... means the Q values of ordinary circuits can be made to approach those of quartz crystals , but they are less satisfactory for frequency discrimination as a further small decrease in effective resistance results in instability and ...
Other editions - View all
Common terms and phrases
angle antenna applied approximately assumed atom axis becomes calculated capacity carrying cell characteristic charge circuit closed coil component condition conducting conductor connected considered constant curve density depends determined dielectric difference direction discharge discussion distance effective electric electrons element energy equal equation evident expression factor field flow flux force frequency function galvanometer given grid hence impedance important increases indicated induction integral ions known length limited linear load losses magnetic magnetic field magnitude maximum means measured mechanical metal meter method negative normal obtained oscillations parallel path period phase placed plate positive potential present produced proportional quantities radius ratio reduced region relation represents resistance result rotation seen separation Show shown simple solution space surface temperature terminals transformer tube unit vector volts volume wave wire written zero