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Unformatted text preview: in order to
determine the wavelength? Physics 1051 Laboratory #6 Diffraction Part V: The Experiment
Set up your apparatus and produce an interference pattern.
1. You should observe a minimum of 15 bright spots.
2. The central spot is not necessarily the brightest
3. A minimum of 5 points for analysis is recommended.
Record data from the pattern in a table (with units and headings).
Think carefully about your accuracy!
Referring to the diagram, is it better to
i) measure Y and calculate X or θ L ii ) measure X directly?
Calculate and record the angle θ for each of your measurements.
Also record your values of L and d. Y1 X1=Y1/2 Physics 1051 Laboratory #6 Diffraction Part V: The Experiment
Graphing the Data
Open Graphical Analysis by clicking the icon below. Choose suitable data and plot a graph.
Having trouble deciding what to plot?
Click here to open the notes from your Graphing Workshop.
You may calculate and display the linear fit for this data set by clicking
Analyze then Linear Fit. Double click on the box that appears and turn
on the Standard Deviations for both the Slope and Intercept.
Print your graph and include it with your report. Physics 1051 Laboratory #6 Diffraction Part V: The Experiment
Analysis Lab Report 8: " Use the results of your graph to determine the
wavelength and its uncertainty. The range of wavelengths of light produced by the laser pointer is
stamped on it. As the laser light is red, the wavelength must be in
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