deletions | additions       diff --git a/subsection_Quadrature_Noise_The_motion__.tex b/subsection_Quadrature_Noise_The_motion__.tex  index 79eb007..8cd9151 100644  --- a/subsection_Quadrature_Noise_The_motion__.tex  +++ b/subsection_Quadrature_Noise_The_motion__.tex 
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\[f(t) = X(t) cos(\omega t) + Y(t) sin(\omega t)\]  As in the case of the harmonic oscillator, it's impossible to exactly determine $X(t)$ and $Y(t)$ for any a  given $t$ - there's an amount of uncertainty that can be due to classical noise, noise  or quantum uncertainty relations.