Optics
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.
Equipment:
- Tall glass container
- Ruler or wooden pole
- Water
Setup Procedure:
- Fill the conntainer up 2/3 with water.
Demonstration Procedure:
- 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.
Back