In this experiment, the ratio of specific heat capacities for air is determined using Ruchhardt's Method of measuring the period of oscillation of the piston in a cylinder filled with air.
A cylinder is filled with air and a Pressure Sensor is attached. The piston is plucked by hand and allowed to oscillate. The oscillating pressure is recorded as a function of time and the period is determined. The ratio of specific heat capacities is calculated using the period of oscillation, according to Ruchhardt's method.
Since the oscillations are plotted, it is easy to accurately measure the period of oscillation.