6A44.25 • Total Internal Reflection: Snell’s Wheel

Photo Shows the Demonstration Apparatus Used by the University with the room lights dimmed. of Texas at Austin.

Instructions / Notes:

• A laser beam pointed at a Snell's wheel which be used to demonstrate refraction and total internal reflection.
• Rotate the wheel to determine the critical angle for total internal reflection.
• Demo Staff: Check the alignment of the laser beam through the Snell's wheel before the start of each class.
• Adjust alignment by rotating the laser along the horizontal plane.

Photo Shows the Demonstration Apparatus in Use with the room lights still on.

Last updated on August 30, 2017