phys320 lab5_light_data_sheetbillzach

phys320 lab5_light_data_sheetbillzach - Inverse Nth fit the...

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Physics 320 Experiment 5 Light Intensity versus Distance DATA SHEET Name: Bill Zacharias Date: May 15, 2010 Prediction 1. How does the light intensity of a point source depend on distance? The closer the light source the more lux(light intensity) will be detected by the meter. The further the source is the lower the lux. Data 2. Paste a copy of your intensity-distance graph here. 3. Record the results from the various fits Fit Linear Quadratic Inverse Inverse Square Inverse Nth Error 60.3 3.81 4.83 0.538 0.107 Phys320 Lab Page 1 Experiment 5
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Physics 320 Experiment 5 continued I added inverse Nth fit because it worked the best. Questions 4. Which choice from the Fit menu was the best fit for your data?
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Unformatted text preview: Inverse Nth fit the best. 5. How does the light intensity depend on distance? The closer the light source the more intense the lighting, the light intensity was equal to 100 lux when light source was closer than .08 meters 6. Do your results agree with your prediction from the theory? Yes 7. List some reasons that your results may not match the relationship you predicted. Reasons that results may not have been what was desired is that there may have been too much lighting in the background or the meter was not lined up directly to the source. Phys320 Lab Page 2 Experiment 5...
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phys320 lab5_light_data_sheetbillzach - Inverse Nth fit the...

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