L1-11: INVERSE SQUARE LAW - LIGHT BULB AND RADIOME

ID Code: L1-11
Purpose: To demonstrate that light obeys the inverse square law.
Description: The intensity of the bulb as a function of distance can be measured by a radiometer, verifying the inverse square relationship. The radiometer reading is displayed using an overhead projector slave meter.
Availability: Available

See the Physics Question of the Week for 9/29/2014 for an example of how this demonstration can be used in class interaction and discussion: lecdem.physics.umd.edu/question-of-the-week-archive.html