6A42.45: Stick in Water
Description: This demonstration shows the refraction of light from water to air.
When viewed at diffrent angles, it looks like the top part of the stick is detached from the bottom.
- Tall glass container
- Ruler or wooden pole
- Fill the conntainer up 2/3 with water.
- Insert the ruler or pole. Angle it slightly.
- Note that it looks like the rule is discontinuous.
- This is because of the refraction from the water-air surface.