Experiment 2:Inverse Square Law EQUIPMENT NEEDED: -Radiation Sensor -Stefan-Boltzmann Lamp,Millivoltmeter -Power Supply(12 VDC,3A),meter stick. Align axes of filament and Sensor ghmmmmmmmimmmmm Top View Power Supply (13V MAX!) Millivoltmeter Meter Stick Align zero-point of meter stick with center of filament 1.Set up the equipment as shown in Figure 2.I a.Tape a meter stick to the table. b.Place the Stefan Boltzmann Lamp at one end of the meter stick as shown.The zero point of the meter stick should align with the center of the lamp filament. c.Adjust the height of the Radiation Sensor so ii is at the same level as the filament of the Stefan-Boltzmann Lamp. d.Align the lamp and sensor so that,as you slide the Sensor along the meter stick,the axis of the lamp aligns as closely as possible with the axis of the Sensor. e.Connect the Sensor to the millivoltmeter and the lamp to the power supply as indicated in the figure. 2.With the lamp OFF,slide the sensor along the meter stick..Record the reading of the millivoitmeter at 10cm intervals.Record your values in Table 2.1 on the following page.Average these values to determine the ambient level of thermal radiation.You will need to subtract this average ambient value from your measurements with the lamp on,in order to determine the contribution from the lamp alone. 3.Turn on the power supply to illuminate the lamp.Set the voltage to approximately 10 V. IMPORTANT:Do not let the voltage to the lamp exceed 13 V. 4.Adjust the distance between the Sensor and the lamp to each of the settings listed in Table 2.2. At each setting record the reading on the millivoltmeter.4 Experiment 2: Inverse Square Law EQUIPMENT NEEDED: -Radiation Sensor -Stefan-Boltzmann Lamp, Millivoltmeter -Power Supply (l2 VDC, 3A), meter stick. 1. Set up the equipment as shown in Figure 2. l . a. Tape a meter stick to the table. b. Place the Stefan Boltzmann Lamp at one end of the meter stick as shown. The zero point of the meter stick should align with the center of the lamp filament. c. Adjust the height of the Radiation Sensor so ii is at the same level as the filament of the Stefan-Boltzmann Lamp. d. Align the lamp and sensor so that, as you slide the Sensor along the meter stick, the axis of the lamp aligns as closely as possible with the axis of the Sensor. e. Connect the Sensor to the millivoltmeter and the lamp to the power supply as indicated in the figure. 2. With the lamp OFF, slide the sensor along the meter stick.. Record the reading of the millivoitmeter at 10cm intervals. Record your values in Table 2.1 on the following page. Average these values to determine the ambient level of thermal radiation. You will need to subtract this average ambient value from your measurements with the lamp on, in order to determine the contribution from the lamp alone. 3. Turn on the power supply to illuminate the lamp. Set the voltage to approximately 10 V. IMPORTANT : Do not let the voltage to the lamp exceed 13 V. 4. Adjust the distance between the Sensor and the lamp to each of the settings listed in Table 2.2. At each setting record the reading on the millivoltmeter