Refraction at a Glancing Angle

Description:  In this clip, plane waves travel over a shallow region but do not enter the region "head-on". This clip was recorded at 30 frames per second.

Larger Video Frame

Questions:

1. What changes do you observe in the waves as they enter the shallow region (give at least 3)?

2.  What changes occur to the waves as they leave the shallow region?

3. Compare the direction of travel in waves that have not crossed into the shallow region to waves that have left the shallow region.

On to Part Three