(1) The reciprocity theorem method and the MEC are employed together to calculate the coupling scattering field between a target and sea surface.

(2) According to reciprocity theorem, when two nodes communicate, the controlling packets and the data packets they exchange provide the connectivity information.

(3) An extension of the reciprocity theorem in elasticity is made to be applicable to the static, self-gravitational elastic earth.

(4) In this paper, based on the reciprocity theorem, the light scattering from a spherical particle above a slightly rough dielectric surface is studied.

(5) The expressions of external and internal coupling were derived from the reciprocity theorem by analysing slot voltage distribution in this paper, which invoked magnetic current to slots.

(6) The integral expressions for scattered fields including the second-order scattering terms are given based on the reciprocity theorem.

(7) The expression of mutual impedance between two probes in a circular waveguide is derived by means of a vector potential function, reaction concept and reciprocity theorem.

(8) Finally, the reflection coefficients and the normalized admittance of the slot on the waveguide for TE_(10) mode are calculated using the reciprocity theorem.

(9) On applying the diffraction theory and with the aid of the reciprocity theorem, an approximate formula for the radiation field of a slot cut in a metal sheet of finite size is derived.

(10) There are a number of alternative formulations of the reciprocity theorem.