Procedure IMPORTANT:The voltage into the lam should NEVER exceed 13 V.Higher voltages will burn out the filament. 1.BEFORE TURNING ON THE LA MP,measure Tret the room temperature in degrees Kelvin, (K=C+273)and R the resistance of the filament of the Stefan-Boltzmann Lamp at room temperature.Enter your results in the spaces on the following page. 2.Set up the equipment as shown Figure 3.1.The voltmeter should be connected directly to the binding posts of the Stefan-Boltzmann Lamp.The Sensor should be at the same height as the filament,with the front face of the Sensor approximately 6 cm away from the filament.The entrance angle of the thermopile should include no close objects other than the lamp. 3.Turn on the power supply.Set the voltage,V,to each of the settings listed in Table 3.1 on the following page.At each voltage setting,record I,the ammeter reading and Rad,the reading on the millivoltmeter. IMPORTANT:Make each Sensor reading quickly.Between readings,place both sheet of insulating foam between the lamp and the Sensor,with the silvered surface facing the lamp,so that the temperature of the Sensor stays relatively constant.8 Procedure IMPORTANT: The voltage into the lam should NEVER exceed 13 V. Higher voltages will burn out the filament. 1. BEFORE TURNING ON THE LAMP, measure Tref the room temperature in degrees Kelvin, (K=  C + 273) and R ret the resistance of the filament of the Stefan-Boltzmann Lamp at room temperature. Enter your results in the spaces on the following page. 2. Set up the equipment as shown Figure 3.1. The voltmeter should be connected directly to the binding posts of the Stefan-Boltzmann Lamp. The Sensor should be at the same height as the filament, with the front face of the Sensor approximately 6 cm away from the filament. The entrance angle of the thermopile should include no close objects other than the lamp. 3. Turn on the power supply. Set the voltage, V, to each of the settings listed in Table 3.1 on the following page. At each voltage setting, record I, the ammeter reading and Rad, the reading on the millivoltmeter. IMPORTANT: Make each Sensor reading quickly. Between readings, place both sheet of insulating foam between the lamp and the Sensor, with the silvered surface facing the lamp, so that the temperature of the Sensor stays relatively constant