Mach number
The Mach number (M or Ma), often only Mach (; German: [max]), is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound.
Commentary
Commentary
Mach number
The Mach number (M or Ma), often only Mach (; German: [max]), is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound.
What is Mach number, and why does it matter?
This concept appears everywhere in physics. Once you understand it, a wide range of natural phenomena start to make sense.
M
=
u
c
,
{\displaystyle \mathrm {M} ={\frac {u}{c}},}
Deep dive: Mach number
The Mach number (M or Ma), often only Mach (; German: [max]), is a dimensionless quantity in fluid dynamics representing the ratio of flow velocity past a boundary to the local speed of sound.
It is named after Austrian-Czech physicist and philosopher Ernst Mach.
M
=
u
c
,
{\displaystyle \mathrm {M} ={\frac {u}{c}},}
where:
Sources: Wikipedia
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