Course Icon

Forces of Nature

Lab Assignment: Radiometry

SO Icon

Forces of Nature Lab

Matter and Electrons

Goal: To Measure emissivity from a light bulb and determine its blackbody properties.

Be sure that you play with the two student exercises so that you understand Planck's distribution formula.



  1. Follow the instructions at Web Physics 320 Lab.

Data Handling

  1. Use the data handling instructions with the lab procedures.

ALTERNATIVE LAB Goal: to observe changes in blackbody radiation at different temperatures.

Change the temperature of the blackbody and observe what happens to the emitted light.


  1. Describe your experiment in sufficient detail that another similarly equipped student could perform your tests.
  2. Include your assessment that the light bulb acts/doesn't act as a blackbody over various temperature ranges.