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Réflexion <strong>et</strong> Réfraction (15)" i0x= #" i0cos$ i, " r0x= " r0cos$ r, " t 0x= #" t 0cos$ tD’où!!!Soit(1)(2)(1)(2)" i0+" r0=" t 0" # i0µ 1cos$ i+ # r0µ 1cos$ r= " # t 0µ 2cos$ t" i0+" r0=" t 0n 1cos" i (# $# i r ) = n 2# tcos" tµ 1µ 2

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