Papers
Papers should be
double-spaced with the references, figures and tables appearing at the
end. Following the body, the remaining
sections should appear in the following order:
(1) the body of the paper,
(2) the references,
(3) the tables and
(4) the figures and figure captions
or
(5) the figures captions and
(6) the figures.
This is to be a short, one paragraph statement of what was done and what the results are. This should be from only a few sentences. In the first sentence state what was done - do not explain or defend what you did. Next, give the results.
You
should use the introduction to say more about what you did. You can also use
this section to talk about why this is important and what your report will
show. For example, in the sound wave
experiment you will compare an experimental value for the velocity based on
standing waves in a column of air to one determined by the ratio of the
specific heats and the propagation of mechanical waves. If you find a disagreement this may tell you
something about your assumption for g or your implicit assumptions associated
with the method you used. If there you
discover something fundamentally new or something really interesting, you
should mention it in the introduction.
You probably do not want to advertise poor experimental technique or
carelessness on the part of the experimenter in the introduction, however. This
section should be one to three paragraphs.
As with any writing, you may find it easier to write the introduction
last.
In this section you should give the details of your experiment and how they were performed. You should describe the instrumentation, the procedure (how data was obtained, how instrumentation was calibrated, etc.) and the samples used along with any special features of your experiment, if appropriate. You should be as specific as possible but concise.
Sometimes it will be necessary to give background information so that your results can be understood.
Here you will have to be selective about
what you include. You will always take
more data than you can present in a report.
For example, you will most likely make a few calibration runs; these
results do not belong in the final report. In addition, you will make several
measurements of the resonant frequency for a give L and n. You will only want to report one result,
however, your best estimate of the true value.
Note, this should be representative of your measurements and not just
the one that happened to work or the so-called "best value."
You will have to use your best judgment as
to if a table or a plot will be the best way to report the data. For example, in the sound wave experiment
you are most interested in the speed of sound, not the resonant
frequencies. Thus, presenting the
frequency data in a table may be less desirable than collecting them neatly in
a single plot. In this case, the plot
has the advantage that you probably would want to include it anyway since you
will extract the speed of sound from various plots. You should include error bars, in both the x- and y- directions
if you like, to indicate how well you feel you believe the various values on
the plot. Note, you can take errors in
the x-direction and augment your errors in the y-direction for analysis. After
your analysis, you need to present a clear, unambiguous result.
Finally, if your theory and experimental
results disagree you will need to spend time discussing why. You will need to propose a plausible reason
for the discrepancy and why you feel this is the case. The more concrete you make this, i.e., with
data, the more believable your conjecture will be.
Summarize what you did and what you learned in the
conclusion. If it becomes clear during the course of your analysis or data
collection that a different method would have given better results (define what
you mean by better) or a change in conditions under which the data were
collected would have enhanced your chances of getting better results, so state.
Again, the more concrete you can make this the better off you will be. The
conclusion, however, should be concise. If you need to present data to make
your case for a new or different approach, you should have presented it in the
previous section and just point back to it in the conclusion.