The objective of the experiment was to determine the composition of an unknown sample using Scanning Electron Microscopy. (The Professor’s reason for having you do the lab, but not the objective of the lab itself). The objective of this experiment was to learn how to use the SEM. When determining the objective, be sure to identify the end goal of the experiment itself, not the pedagogical goal of the experiment: State the topic of your report clearly and concisely, in one or two sentences. It states a) the objective of the experiment and b) provides the reader with background to the experiment. The Introduction: is more narrowly focused than the abstract. These results have important implications for human factors design applications such as graphical display interfaces.ģ. Further, the two factors functioned independently in their effects on subjects’ point of subjective equality. This last is contrary to our expectations. For line orientation, overestimation was greatest when the lines were horizontal. The size of error increased with decreasing arrowhead angles. Results showed that line lengths were overestimated in all cases. The lines to be adjusted were tipped with outward pointing arrows of varying degrees of pointedness, whereas the standard lines had inward pointing arrows of the same degree. Each condition was tested in six randomized trials. Twenty-three subjects were tested in a repeated measures design with four different arrowhead angles and four line orientations. The test was to determine the point of subjective equality by having subjects adjust line segments to equal the length of a standard line. The Müller-Lyer illusion is the classic visual illustration of the effect of the surrounding on the perceived length of a line. This experiment examined the effect of line orientation and arrowhead angle on a subject’s ability to perceive line length, thereby testing the Müller-Lyer illusion. (See also Components of Documents / Abstracts and Executive Summaries) The abstract should be one paragraph of 100-200 words (the sample below is 191 words). The information should clearly enable readers to decide whether they need to read your whole report. The abstract often also includes a brief reference to theory or methodology. The Abstract: summarizes four essential aspects of the report: a) the purpose of the experiment (sometimes expressed as the purpose of the report) b) key findings, c) significance and d) major conclusions. Not “Lab #4” but “Lab #4: Sample Analysis using the Debye-Sherrer Method”).Ģ. Titles should be straightforward, informative, and less than ten words (i.e. The Title Page: needs to contain the name of the experiment, the names of lab partners, and the date. You still need to organize your ideas carefully and express them coherently. Bear in mind that a format, however helpful, cannot replace clear thinking and organized writing. Merely recording the expected and observed results is not sufficient you should also identify how and why differences occurred, explain how they affected your experiment, and show your understanding of the principles the experiment was designed to examine. Knowing the pieces and purpose, you can adapt to the particular needs of a course or professor.Ī good lab report does more than present data it demonstrates the writer’s comprehension of the concepts behind the data. With that in mind, we can describe the report’s format and basic components. Regardless of variations, however, the goal of lab reports remains the same: document your findings and communicate their significance. Worse yet, each professor wants something a little different. Lab reports are the most frequent kind of document written in engineering and can count for as much as 25% of a course – yet little time or attention is devoted to how to write them well. This document describes a general format for Lab Reports that you can adapt as needed.
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