The field distributions given by Kirchhofftheory and Rayleigh-Sommerfield theory are studied respectively, and further comparisons with the exact electromagnetic theory are also given.
Firstly according to radiation theory the boundary function of planar diffraction body is given, based on this condition the Kirchhoff diffraction formula is deduced and obtained.
根据辐射理论重新设定了平面衍射物的边界函数，并以此条件推导了基尔霍夫衍射公式，并赋予新的含义。
3
According to Tellegen's theorem, the two states of the RLC linear network have been studied, and the orthogonal Kirchhoff modes theory is discussed in this paper.