00000nam 2200000zi 4500 9.892264 CaOODSP 20221107173125 m o d f cr |n||||||||| 201008s1993 oncd ob f|0| 0 eng d CaOODSP eng rda CaOODSP eng fre n-cn--- Co24-3/7-93-001E-PDF Whitteker, J. H. (James Howard), 1940- author. Babinet's principle applied to bridged knife edges / by J.H. Whitteker. Ottawa : Government of Canada, Department of Communications = Gouvernement du Canada, Ministère des Communications, 1993. 1 online resource (25 pages) : charts. text txt rdacontent computer c rdamedia online resource cr rdacarrier CRC report ; CRC-RP-93-001 Digitized edition from print [produced by Innovation, Science and Economic Development Canada]. "March 1993." Includes bibliographical references (page 25). "In knife-edge diffraction problems, Babinet's principle allows the original arrangement of diffracting screens to be replaced by two new arrangements in which any chosen diffracting screen is absent in one of the new arrangements, and is replaced by its complement in the other. The two new problems may be easier to solve than the original one. The principle is here extended to bridged knife edges, in which the spaces between successive diffracting screens are bridged over by perfectly reflecting plane surfaces that connect the knife edges. Any such structure with a 'valley' can be replaced by other structures that do not have that valley. Again, the new problems may be easier to solve than the original one. This formulation may also be applied to the multiple (unbridged) knife edge problem, whichis a special case of the more general problem"--Abstract. Includes abstract in French. Electromagnetic waves Diffraction. Ondes électromagnétiques Diffraction. Canada. Department of Communications, issuing body. CRC report ; CRC-RP-93-001. (CaOODSP)9.882492 PDF 790 KB https://publications.gc.ca/collections/collection_2020/isde-ised/Co24/Co24-3-7-93-001-eng.pdf