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PH-152 MP-4 Manual Addendum MP4-Physical Optics III Introduction This equation 6b should appear 2 m= 1, 3, 5. .. m ax m L λ ± ± at the bottom of page MP4.3 in the manual. Solving for x m will give the relationship between minima location and the order of the minima, allowing you to plot your data and calculate a from the slope. VI-For the Report VI-1 Include the diffraction patterns recorded in section V-1 in your report. For the double slit pattern: By examination of equation 6b above, we see that we can plot the locations of the minima (x m , relative to the location of the center of the central maximum) vs. the order number of the minima (m), and that the slope of that plot will give us the width of the slit. Tabulate x m and m. Plot x m vs. m, and using LINEST in Excel determine the slope of that line. Calculate a, and compare with the manufacturer’s stated value. State the percent difference between your measured value and the manufacturers stated value.

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