Today’s lesson

• Critical angle

• Total internal reflection

• Dispersion

Critical Angle?

i

Critical Angle?

i

Critical Angle?

Critical Angle?

i

Critical Angle

Critical angle (when angle of refraction is 90º)

i

Critical Angle

The Critical angle is the angle of incidence that produces an angle of refraction of 90º

Copy!

90º

Critical angle

Critical Angle

The Critical angle is the angle of incidence that produces an angle of refraction of 90º

Copy!

90º

Critical angle

Total Internal

Reflection

Bigger than Critical angle

Examples of Total Internal Reflection

Examples of Total Internal Reflection

Examples of Total Internal Reflection

Examples of Total Internal Reflection

Examples of Total Internal Reflection

Examples of Total Internal Reflection