Let us return to electrostatics. Clearly,as a customarily used dependent variable,Ecannot be directly defined in the no-mass and no-geometry field in physics. Compatibly inlogic,the E must be impossibly used as a proper dependent variable to construct a c...[继续阅读]

    Obviously,the whole logic foundation,used to reconstruct the boundary relation(2.5.10)here,would only be the mean value theorem initially supposed by Cauchy,which isof universal effectiveness in mathematics. So,the thinking foundation or logic premise mig...[继续阅读]

    In physics,while only a singular charge set is discussed,it seems necessary to regard arest or unmoving in space domain charge set as simultaneously unvarying in time-varyingdomain. So,as a natural inference of the above-mentioned judgement,the whole form...[继续阅读]

    In most of modern textbooks,formal quantity B may usually be directly called as magneticfield. However,well known to all of us,the B,which is one of the two dependent variablespresented in Maxwell’s equations,was only defined in the first as magnetic indu...[继续阅读]

    According to the above-mentioned discussion,as a kind of equivalent expression of force,thecustomarily used formal quantity distribution B (x) can only be defined in a test current placed at xposition to show the action acted by the magnetic field excited...[继续阅读]

    And,within the special historical process to deepen understanding the essential relationbetween magnetic and current,it was H. C. Oersted who first successfully completed a test andabove all found the connection between electric current and magnetism,thou...[继续阅读]

    However,only considering the convenience for the following field analysis,it may be moreperfect in form to change the above-mentioned closed curve integral into another general form ofclosed integral that is defined in a given 3-dimensional space domain V...[继续阅读]

    We will also see,just for the existence of such a necessary prerequisite,unfortunatelywhich is always usually forgotten by most of us,the dispensable boundary condition,namely thenormal component of boundary current distribution must identically vanish,wo...[继续阅读]

    Any formal character of a physical phenomenon can only logically rely upon the realmaterial connotation behind the phenomenon. So,while we discuss the magnetic field excitedby current source,it always is of a kind of primary significance to exactly the re...[继续阅读]

    As same as above-mentioned,the originally derived result or the test,made by Amperehimself and based on his assumption about four “tests to show zero”,did not coincide with therelated physical reality. The unique reliable empirical equation is Biot-Savart...[继续阅读]