Key Features: Investigate the Compression of Gases, Computer Monitors Temperature, Pressure and Volume, Measure the Work Done on a Gas Accurate Data: Pressure, volume and temperature are monitored by highly sensitive transducers with fast response times. Transducer Features: Volume Transducer — A linear potential divider is mounted on the side of the piston. A 5-volt source from the computer is applied across the potentiometer element. The voltage from the commutator brush on the cylinder is used to indicate the position of the piston and the volume of the confined gas. Pressure Sensor — A solid state, piezoresistive device that forms part of a bridge circuit is mounted at the base of the cylinder. Temperature Sensor — Mounted in the cylinder on the top of the base. The active element is fine nickel wire with a high surface-to-mass ratio. The wire’s temperature changes rapidly as the gas compresses or expands. Use monatomic, diatomic and polyatomic gases — to determine the effects of molecular structure on y. Investigate isothermal compression and expansion. Experiments: PASCO’s Adiabatic Gas Law Apparatus can be used with the ScienceWorkshop Interface. The computer functions as a 3-channel storage oscilloscope, plotting graphs of pressure, temperature and volume as well as integrating the area under a pressure versus volume curve to determine the work done on the gas. Includes: Adiabatic Gas Law Apparatus Instruction manual, experiment guide and the fully documented experiment, “Measurement of Work to Compress Gases Adiabatically” (sample data included). Additional Equipment Required: — A computer with an interface that will accept three analog signals simultaneously via 5- or 8-pin DIN connectors such as: PASCO’s ScienceWorkshop 500, 700 and 750 Interfaces. Note: The unit requires 9 V. This can be supplied by a battery, a power supply or by the ScienceWorkshop Interface. Recommended Supplies: — Gases: argon (monatomic), air or nitrogen (diatomic), carbon-dioxide (triatomic).