6A44.45 Water Stream Light Pipe
Shine a laser beam down the center of an orifice issuing from a large plastic soda bottle. Use a dash of Creamora as a scattering agent.
Click here for a downloadable video of the demonstration from a 1994 Harvard Demo show.
Location: Soda containers next to shelves U1; Creamora: Above eyewash station; Bucket: Next to sink; Laser: R2-3