Reflections

Question 1

Whenever a wave/ray arrives at the boundary of two materials, what are the 3 things that can happen?

Answer 1

• Wave gets absorbed and added to the struck material’s energy stores
• Wave gets transmitted through the material and refracted
• Wave gets reflected off the surface

Question 2

In reflection, what 2 things are always congruent

Answer 2

Angle of incidence = Angle of reflection

Question 3

Specular reflection

Answer 3

When rays are reflected off a perfectly smooth material therefore the normals are all in the same direction and the reflected rays in the same direction

Question 4

Diffuse Reflection

Answer 4

When rays are reflected off a bumpy material therefore the normals and reflected rays are all in different directions