1. How light bends as it moves between mediums
Refraction of Light
How light bends as it moves between mediums

3. Refraction
Refraction occurs because light travels at different speeds in different media
When light changes speed as it moves from one medium to another its direction also changes

4. Refraction
As the light ray travels from air to water it will bend toward the normal. Draw this on the picture below.
What would happen if a light ray travelled from water to air?

5. Refraction
To know if the light is going to speed up or slow down we need to know the density of the media.
More dense media will cause light to travel slower and less dense media will cause light to travel faster

6. Converging and Diverging Lens Pre - Lab
Complete the Pre - Lab for next day
You may have to do some of your own research

7. Refraction plays a role in human vision
The cornea causes about 80% of refraction as light passes through
The lens causes about 20% of the refraction as light passes through
However, this part is responsible for focusing on close objects

8. So how does a prism create a rainbow?

9. Using the diagram, explain how a prism works

10. Near sighted and far sighted
If you are curious about what varying eye diseases look like click here

12. Before watching the video...
How do you think laser eye surgery works?

13. So what about the future?
Smart Contact lenses
Check glucose readings
Cure colour blindness
Multifocal
Digital overlay
Visual reality

14. Workbook pages
Complete workbook pages 137, 139, 140, and 141