12 Appendix G - Sample Laboratory Report

12 Appendix G - Sample Laboratory Report - Appendix G...

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G - 1 Appendix G: Sample Laboratory Report There is no set length for a problem report but experience shows that good reports are typically three pages long. Graphs and photocopies of your lab journal make up additional pages. Complete reports will include the terminology and the mathematics relevant to the problem at hand. Your report should be a clear, concise, logical, and honest interpretation of your experience. You will be graded based on how well you demonstrate your understanding of the physics. B ecause technical communication is so important, neatness, and correct grammar and spelling are required and will be reflected on your grade. Note: The double vertical bars indicate an explanation of that part of the report. These comments are not part of the actual report. Statement of the problem In a complete sentence or two, state the problem you are trying to solve. List the equipment you will use and the reasons for selecting such equipment. The problem was to determine the distance the deflect ion plates (x and y) in the Cathode Ray Tube (CRT) using the deflections recorded on the screen at various potential differences. We connected the CRT as shown in Appendix D and recorded the x -deflection and y-deflection resulting from several different voltages applied to the deflection plates. Prediction Next comes your prediction. Notice that the physical reason for choosing the prediction is given. This was an exploratory problem asking for a quantitative prediction, but many predictions ask you to find mathematical relationships between two variables. Note that the prediction is wrong. The prediction does not need to be correct, it needs to be what you really thought before doing the lab; that is why it is called a prediction. The prediction is supposed to be a complete and reasonable attempt by your group to determine the outcome of the problem. Our group predicted that the distance between the deflection plates can be calculated based on the resultant x and y deflections on the screen at diff erent voltages. The distances D x and D y can be easily calculated, which lead us to conclude that the distance that we were interested in for this lab is simply
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12 Appendix G - Sample Laboratory Report - Appendix G...

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