I just finished watching the movie "Hidden Figures" and noticed this rather odd notation on the chalkboard:
What does it mean?
2026-04-25 13:05:40.1777122340
What is this notation in the movie Hidden Figures?
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1
$\tfrac{2\pi t}{\tau}$.
Since the movie is about orbital mechanics, I guess this refers to the angle of something in a circular orbit at time $t$, having an orbital period $\tau$.