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Measurements of the Speed of Light¶
Rotating Mirror Method by Foucault¶
Fig.: .
Path length difference
\[\Delta s =2(f+b)\]
\[\Delta \alpha=2\pi\nu \Delta t\]
\[\Delta x = 2 \Delta \alpha a\]
\[\Delta \alpha=\frac{\Delta x}{2a}\]
\[\frac{\Delta x}{2a}=2\pi\nu \Delta t\]
\[\Delta t=\frac{\Delta x}{2a}\]
\[c=\frac{\Delta s}{\Delta t}=\frac{8\pi (f+b)a}{\Delta x}\]
