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The dielectric layers have width of 5 centimeters each. The top layer has micro sub r equals 1 and epsilon sub r equals 6.25 and bottom layer has micro sub r equals 1 and epsilon sub r equals 2.25. The wave enters at angle of theta sub I which makes an angle theta sub 2 in the layer 1, an angle theta sub 3 in the layer 2 and ends at angle theta sub 4 in the air. The horizontal distance between angle theta sub i and theta sub 4 is d.