相そう反はん定てい理り

noun

reciprocity theorem

A principle in physics stating that the response at one point due to a source at another is symmetric under exchange of source and receiver, often applied in electromagnetism, acoustics, and structural mechanics.

• 相そう反はん定てい理りは、電でん磁じ気き学がくにおいてアンテナの送そう受じゅ信しん特とく性せいが等ひとしいことを示しめす。

  The reciprocity theorem shows that the transmitting and receiving characteristics of an antenna are equal in electromagnetism.

• 構こう造ぞう力りき学がくの相そう反はん定てい理りを使つかうと、ある点てんの荷か重じゅうによる別べつの点てんの変へん位いが計けい算さんできる。

  Using the reciprocity theorem in structural mechanics, the displacement at one point due to a load at another can be calculated.