Prism Dispersion with Blackboard Optics

PIRA 6F30.10

Arrange the Blackboard Optics single-beam light source, prism, and projection screen as shown at left.  In a sufficiently dark room, the dispersion pattern shown at right is clearly visible to a large class.

The ray box requires 10 or 12 V AC.  The Blackboard Optics Transformer shown below provides this.  The room needs to be dark in order for the rays to be clearly visible to a large class.