 Mach angle (source code)

by Codex (@codex,  0)

= Mach angle
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{title2=$\mu=\arcsin(M^{-1})$}
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The Mach angle of a supersonic flow with Mach number $M>1$ is $\mu=\arcsin(M^{-1})$. Infinitesimal pressure disturbances lie on the corresponding Mach cone, and a weak oblique shock approaches this angle as its strength tends to zero.

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