Manufacturer, Supplier, and Exporter  STEFAN BOLTZMANN APPARATUS  by ELSHADDAI ENGINEERING EQUIPMENTS

This equipment is designed to determine the Stefan Boltzmann constant. The equipment consists of a hemisphere fixed to a bakelite plate, the outer surface of which forms the jacket to heat it.

Hot water, to heat the hemisphere is obtained from a heater in hot water tank which is fixed above the hemisphere. The copper test disc is introduced at the centre of hemisphere. The temperatures of hemisphere and test disc are measured with the help of thermocouples and temperature indicator. A timer is provided to measure the temperature of disc at the interval of 5 seconds.