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Diffstat (limited to 'interferometry.tex')
| -rw-r--r-- | interferometry.tex | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/interferometry.tex b/interferometry.tex index d3ed02b..62487ae 100644 --- a/interferometry.tex +++ b/interferometry.tex @@ -163,7 +163,7 @@ Each lab partner should make at least two independent measurements, starting fro \item Avoid touching the face of the front-surface mirrors, the beamsplitter, and any other optical elements! \item The person turning the micrometer should also do the counting of fringes. It can be easier to count them in bunches of 5 or 10 (\textit{i.e.} 100 fringes = 10 bunches of 10 fringes). \item Use a reference point or line and count fringes as they pass. -\item Before the initial position $X_1$ is read make sure that the micrometer has engaged the drive screw (There can be a problem with "backlash"). Just turn it randomly before counting. +\item Before the initial position $X_1$ is read make sure that the micrometer has engaged the drive screw (There can be a problem with ``backlash''). Just turn it randomly before counting. \item Avoid hitting the table which can cause a sudden jump in the number of fringes. \end{enumerate} |