1055_Physics ProblemsTechnical Physics

1055_Physics - 396*P37.46 Interference of Light Waves Along the line of length d joining the source two identical waves moving in opposite

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396 Interference of Light Waves *P37.46 Along the line of length d joining the source, two identical waves moving in opposite directions add to give a standing wave. An antinode is halfway between the sources. If d 22 > λ , there is space for two more antinodes for a total of three. If d 2 > , there will be at least five antinodes, and so on. To repeat, if d > 0 , the number of antinodes is 1 or more. If d > 1, the number of antinodes is 3 or more. If d > 2, the number of antinodes is 5 or more. In general, sNAN s 4 FIG. P37.46 The number of antinodes is 1 plus 2 times the greatest integer less than or equal to d . If d 24 < , there will be no nodes. If d > , there will be space for at least two nodes, as shown in the picture. If d 2 3 4 > , there will be at least four nodes. If d 2 5 4 > six or more nodes will fit in, and so on. To repeat, if 2 d < the number of nodes is 0. If 2 d > the number of nodes is 2 or more. If 23 d > the number of nodes is 4 or more. If 25 d > the number of nodes is 6 or more. Again, if d + F H G I K J > 1 2 1, the number of nodes is at least 2. If
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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