link to LIGO

1 files changed, 10 insertions, 4 deletions

diff --git a/interferometry_new.tex b/interferometry_new.tex
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--- a/interferometry_new.tex
+++ b/interferometry_new.tex
@@ -19,16 +19,22 @@ The \textbf{Michelson interferometer}, shown in Fig.~\ref{fig1mich.fig}, is base
 \includegraphics[width=0.65\linewidth]{./pdf_figs/michelson.png} 
 \caption{\label{fig1mich.fig}A Michelson interferometer setup.}
 \end{figure}
-Such an interferometer was first used by Michelson and Morley~\cite{mmoriginal} in 1887 to determine that electromagnetic waves propagate in vacuum, giving the first strong evidence against the theory of a \textit{luminiferous aether} (a fictitious medium for light wave propagation) and providing insight into the true nature of electromagnetic radiation. Michelson interferometers are widely used in many areas of physics and engineering, including the recent discovery of gravitational waves at the LIGO facility (see 
+Such an interferometer was first used by Michelson and
+Morley~\cite{mmoriginal} in 1887 to determine that electromagnetic waves
+propagate in vacuum, giving the first strong evidence against the theory of
+a \textit{luminiferous aether} (a fictitious medium for light wave
+propagation) and providing insight into the true nature of electromagnetic
+radiation. Michelson interferometers are widely used in many areas of
+physics and engineering, including the recent discovery of gravitational
+waves at the LIGO facility (see materials at page~\pageref{LIGO}
 %Sect.~\ref{LIGO}
-materials 
-at the end of this lab manual for more information).
+for more information).
 
 Figure~\ref{fig1mich.fig} shows the traditional setting for a Michelson
 interferometer. A beam splitter (a glass plate which is partially
 silver-coated on the front surface and angled at 45 degrees) splits the
 laser beam into two parts of equal amplitude. One beam (that was initially
-transmitted by the beam splitter) travels to a moveable mirror $M_1$ and back
+transmitted by the beam splitter) travels to a movable mirror $M_1$ and back
 again. One-half of this amplitude is then reflected from the
 partially-silvered surface and directed at 90 degrees toward the observer
 (you will use a viewing screen). At the same time the second beam