Pasco OS-8529 SLIT ACCESSORY Bedienungsanleitung PDF herunterladen (Seite 8)

Slit Accessory 012–06348A

First Order (m=1) Second Order (m=2)

Distance between

side orders

Distance from center

to side (y)

Calculated slit width

% difference

Procedure

➀ Follow the setup procedure on page 2 of the manual using the 0.04

mm slit of the Single Slit Set.

➁ Measure the distance from the slit to the screen and record.

➂ Turn off the room lights and mark the positions of the minima in

the diffraction pattern on the projection surface.

➃ Turn on the room lights and measure the distance between the

first order (m = 1) marks and record this

distance in Table 1.1. Also measure the distance between the

second order (m = 2) marks and record in

Table 1.1.

➄ Make a sketch of the diffraction pattern to scale.

➅ Change the slit width to 0.02 mm and 0.08 mm and make

sketches to scale of each of these diffraction patterns.

Slit-to-screen distance

(D) = _________________

Table 1.1: Data and Results for the 0.04 mm Single Slit

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?

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Pasco OS-8529 SLIT ACCESSORY Bedienungsanleitung Seite 8