Speaker
Chris Martin
(Shenandoah Valley Governor's School)
Description
The opportunity doesn't often arise for you to pluck out your students' hair without negative repercussions, but this demo is exciting enough for students to offer it freely! Because light acts as a wave, we see a diffraction pattern when it passes over a small slit or obstruction. Using only a laser pointer, measuring tape, and a ruler, you can measure the width of a human hair by analyzing your laser's diffraction pattern on a viewing screen.
