Principles of Electricity and Electromagnetism |
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Page 314
... curl of Eq . ( 10.3 ) σ a curl curl E = curl B at We have also the general vector equation curl curl i , = grad div i , - v2i , And it will be recalled that i , = σE . Assuming for the moment that there is no accumulation of charge so ...
... curl of Eq . ( 10.3 ) σ a curl curl E = curl B at We have also the general vector equation curl curl i , = grad div i , - v2i , And it will be recalled that i , = σE . Assuming for the moment that there is no accumulation of charge so ...
Page 596
... curl of a Vector Field . - If v represents a continuous differentiable vector field , a second vector field of great importance in electromagnetic theory may be derived from it by forming the vector product of and v . This product is ...
... curl of a Vector Field . - If v represents a continuous differentiable vector field , a second vector field of great importance in electromagnetic theory may be derived from it by forming the vector product of and v . This product is ...
Page 598
... ( curl F ) . ds A finite area of a surface bounded by a closed curve can be subdivided into a large number of these infinitesimal areas . It may be seen from Fig . D.12 that the sum of the elements of work done in circumscribing all of ...
... ( curl F ) . ds A finite area of a surface bounded by a closed curve can be subdivided into a large number of these infinitesimal areas . It may be seen from Fig . D.12 that the sum of the elements of work done in circumscribing all of ...
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alternating current alternating-current ampere amplifier amplitude angle angular anode antenna applied approximately armature assumed atom axis calculated capacity cathode cell characteristic charge circuit coefficient coil component condenser conducting conductor considered constant curl current flowing curve deflection density determined dielectric dielectric constant direct-current direction discharge effective electric field electromagnetic electromotive force electrons electrostatic element energy equal equation flux force frequency function galvanometer given grad grid hence impedance induction integral ions known Laplace's equation length linear load magnetic field magnetic moment magnitude maximum measured metal meter negative obtained ohms oscillations output parallel phase plate positive potential difference potential wave potentiometer produced proportional quantities R₁ radiation radius ratio reactance region represents resistance resonant rotation shown in Fig solenoid solution surface temperature terminals theorem torque tube unit V₁ vector velocity voltage volts wire written zero