Adiabatic Gas Law Apparatus

Adiabatic and isothermal processes are difficult for beginning physics students to understand. PASCO's Adiabatic Gas Law apparatus provides the ideal dem­on­stra­tion.

Special 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.