PASCO OS-8523 SLIT ACCESSORY - Manual (Page 10)

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012-05880D Slit Accessory
®
➃
Make a sketch of the diffraction pattern to scale.
➄ Change the slit width to 0.02 mm and 0.08 mm and make sketches to scale of each of these dif-
fraction patterns.
Analysis
➀ Divide the distances between side orders by two to get the distances from the center of the pattern
to the first and second order minima. Record these values of y in Table 1.1.
➁ Using the average wavelength of the laser (670 nm for the Diode Laser), calculate the slit width
twice, once using first order and once using second order. Record the results in Table 1.1.
➂ Calculate the percent differences between the experimental slit widths and 0.04 mm. Record in
Table 1.1.
Questions
➀
Does the distance between minima increase or decrease when the slit width is increased?