Written lab reports are a key component of the course. They are due a week after lab day, unless there is an intervening break or holiday. In a report, you demonstrate your ability to organize and interpret data, to draw inferences, and to communicate and defend conclusions. Unless otherwise specified, a lab group may submit a single report, to which all members contribute, for a lab.
A standard lab report consists of the following sections, with the given weights. If I want a different format for a particular lab, I’ll let you know in the assignment for that lab.
This briefly summarizes the investigation, including procedure and conclusions.
The lab assignment directed you to answer a particular question or accomplish a task. What was it?
Identifies the physics principles relevant to the situation. Develops the formulas or equations to show how the desired information is obtained from the measurements.
What did you do in the lab? What process did you carry out? What equipment did you use? Study? What measurements did you take? Describe the apparatus and procedure in enough detail for a reader to duplicate your experiment.
Data are to be presented to the instructor at the end of the lab period in which they are recorded. If they need to be included in the report for reference, they should be transcribed.
Report all processing of data, such as statistics and plots. The formulas and procedures you use should already have been addressed in the “Theory” section above.
Detail the meaning of your results, particularly pertaining to the “Purpose” above.
Describe possible sources of measurement error, and how errors would affect your results. Please do not use the term “human error.” If the experimenter may have done something wrong, identify it specifically.
What is the answer to the question you investigated? Is your hypothesis supported or not? Is your study conclusive? Your conclusion should be supported by what you wrote in the “Discussion” section.
You can download a printable version of these guidelines in pdf format.
Copyright © 30 August 2023.
Revised: 18 August 2025. Maintained by Richard Barrans.
URL: http://www.barransclass.com/phys1220/labs/LabReports.html