PASCO OS-8523 SLIT ACCESSORY User Manual
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012-05880D
Slit Accessory
®
➂
Turn on the room lights and measure the distance between the first order (m = 1) marks
and record this distance in Table 2.1. Also measure the distance between the second order
(m = 2) marks and record in Table 2.1.
➃
Make a sketch of the interference pattern to scale.
➄
Change to a new double slit with the same slit width (0.04 mm) but different slit separation
(0.50 mm) and make a sketch to scale of this new interference pattern.
➅
Change to another double slit with a slit width of 0.08 mm and the original slit separation
(0.25 mm) and make a sketch to scale of this new interference pattern.
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 maxima. Record these values of y in Table 2.1.
➁
Using the average wavelength of the laser (670 nm for the Diode Laser), calculate the slit
1separation twice, once using first order and once using second order. Record the results in
Table 2.1.
➂
Calculate the percent differences between the experimental slit separation and 0.25 mm.
Record in Table 2.1.
Questions
➀
Does the distance between maxima increase, decrease, or stay the same when the slit sepa-
ration is increased?
➁
Does the distance between maxima increase, decrease, or stay the same when the slit width
is increased?