In "Introduction to Thermal Physics" - Schroeder, the derivation for adiabatic compression: [tex]V^\gamma P = \mbox{constant}[/tex] is derived by assuming the compression is still slow enough to be quasistatic.(adsbygoogle = window.adsbygoogle || []).push({});

However, I'm still a bit confused with how slow is 'slow'.

Quasistatic compression needs to be slow enough for the gas to respond:

[tex]0< v_{QC} < v_{speed\ of\ sound\ in\ gas}[/tex]

Adiabatic compression requires it to be fast enough for no heat to escape... what are the upper and lower limits for adiabatic compression?

And what happens to the formula for adiabatic compression when we compress faster than quasistatic compression?

Thx

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Adiabatic and Quasistatic Compression

**Physics Forums | Science Articles, Homework Help, Discussion**