Close parens in gamma calculation in manual's timescale discussion.

diff --git a/src/sawsim.nw b/src/sawsim.nw
index 5f89121e6f23443520fdf9bdeabd19a3c47f85c2..2e0f0c45bdb40472d9e626db6403f81b28303521 100644 (file)
--- a/src/sawsim.nw
+++ b/src/sawsim.nw
@@ -684,7 +684,7 @@ relative to the simulation timestep $dt$, so that tension is uniform
 along the chain.  The quality of this assumption depends on your
 particular chain.  For example, a damped spring thermalizes on a
 timescale of order $\tau = 1/\gamma$ where the damping ratio $\gamma
-\equiv \omega_0(-\zeta \pm \sqrt{\zeta^2-1}$, the natural angular
+\equiv \omega_0(-\zeta \pm \sqrt{\zeta^2-1})$, the natural angular
 frequency $\omega_0 \equiv \sqrt{k/m}$, $\zeta \equiv b/2\sqrt{km}$,
 and $b$ sets the drag $F_b = -bv$.  For our cantilevers $\tau$ is
 on the order of milliseconds, which is longer than a timestep.