pub fn lorentz_factor(beta: f64) -> Option<f64>Expand description
The special-relativistic Lorentz factor γ = 1/√(1 − β²) for a speed β as a fraction of
c. None for |β| ≥ 1 (or NaN) — nothing reaches or exceeds light speed. Inherently a float
(relativity is transcendental), unlike the exact-rational quantity arithmetic.