The demonstration of refraction using a ripple tank is tricky, and it is a good idea to practise this.
Demonstration: Refraction at an air-water interface and total internal reflection.
Demonstration: Shows refraction is caused when plane waves change speed as a result of a change in the depth of water in a...
Why does the angle of incidence = the angle of reflection ? One answer explored earlier is an appeal to the rules about rays...
This episode starts from the phenomenon of refraction and moves on to Snell’s law.
Recognising and celebrating outstanding contributions to the field of physics education.