# A What is a very weak shock wave? (Gas Dynamics)

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1. Apr 10, 2016

### albertov123

I stumbled upon this concept when studying gas dynamics. What I get from my readings it must occur when Mach number is really close to 1. But I didn't understand how the property relations across a shock wave is affected by it.

2. Apr 10, 2016

It's just a shock wave at the limit of $M\rightarrow 1$. Technically the relations don't change but the limit allows you to make approximations to a number of the equations to make them easier to solve.