Light Intensity vs Distance Lab

Light sensors are great since they allow us to quantify light levels. Humans eyes are horrible at this task since they’re used to compensating for ambient light levels. The intensity of light decreases is as inversely proportional with the distance, but this is not immediately evident to students. Here is a lab I’ve used with my students to help them understand how light decreases as distance increases.

This lab uses light intensity sensors to measure lux vs distance.

Student Lab Handout

Teacher Resource Guide