Physics 128 Logbook Grading Policy, Winter 2017
Each lab will be graded with a total score of 100 points.
Your logbook will also be required to contain the following
- 20 points: Full participation in the experiment. The
student needs to be an active participant rather than an observer
of his/her partner's work.
- 10 points: Clear use of logbook as a record rather than an
after the fact report. For example, record things as they happen. Don't insert things afterward. If you add information later on, put it on a later page and add a note in the margin of earlier pages referring to it.
- 10 points:
Record sufficient detail to allow the measurement to be repeated based on your record.
- 10 points: Explanation of what you measure and
how. State the equations that you use in the measurement. Include diagrams or photos and apparatus descriptions.
- 10 points: Raw data. Include tables and plots made while
collecting the data. These need to be complete and clear enough that
one can reconstruct what was done.
- 5 points: Distilled data, including tables and plots.
You should analyze the raw data and put the resulting plots or
tables in your logbook.
- 10 points: Uncertainties.
State the uncertainties and explain how you estimate them and propagate them.
- 10 points: Systematics. A discussion of potential systematic
biases and uncertainties. You may not be able to quantify them all, but you
should list the effects that you have thought about.
You also needn't measure them all, but you should comment on how you
might measure them or improve the procedure in future measurements
to avoid them.
- 5 points: Conclusion. This needn't be long, and you won't always conclude that everything worked well. But, the conclusions must
be clear, quantitative and supported. For example: "We measured the stretch of a spring as a function of the applied force. It was observed to be linear for forces between about 1 and 5 Newtons with a slope of 5.26 ± 0.03 N/m. Non-linear behavior was observed for forces outside of this range. The dominant uncertainty in the measurement came from uncertainty in the position due to both measurement technique and residual oscillations of the spring." Then show a plot of X vs F.
- 5 points: Organization. The logbook should be
sufficiently well organized to allow the thread to be followed and
information easily found.
- 5 points: Completion of procedures, questions and
exercises specified in the lab manual. If some of them cannot be
completed, e.g., due to equipment problems, let your TA know (he may
waive those parts) and note that in the logbook.
- Names of lab partners.
- Dates and times of measurements and entries.
- Everything must be legible even if it is crossed out as
- Tables of data and plots, must be sufficiently
labelled for content and context.
- Details of your data analysis, that supports your report.
Last revision, 01/08/2017, Harry Nelson