... the ratio of the specific heat of air at constant pressure to the specific heat at constant volume. Sound, 8 lectures - Page 46 by John Tyndall - 1867 Full view - About this book
...pressure (p] becomes And the work done, during an infinite expansion, will be If, then, Y represent the ratio of the specific heat of air at constant pressure to that at constant volume, the mechanical equivalent of the heat absorbed, while the temperature is rising...