Small "joly Photometer"

Demonstrate light intensity versus distance (1/r^2)

Demonstrate light intensity versus distance (1/r^2)

Lights and Paraffin wax from the Joly Photometer box
Meter Stick
Power Source (6V max)

By placing the lights on either side of the Paraffin wax, light intensity as a function of distance can be shown using a ruler or meter stick Detailed instructions are available in the demo box