Reflection Flashcards

1
Q

What 3 things can happen when a wave hits a boundary

A
  • When a wave hits a boundary between two different materials (mediums), the wave can be absorbed (the energy of the wave is added to the material’s energy store), refracted or reflected
  • Which one occurs is dependent on the wavelength and the properties of both materials
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2
Q

What is always true during reflection

A
  • The angle of incidence is always equal to the angle of reflection
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3
Q

What is the point where the incoming ray meets the boundary called

A
  • The point of incidence
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4
Q

What is the normal

A
  • A line exactly perpendicular to the boundary
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5
Q

What is specular reflection

A
  • Boundary is flat
  • All normals are in the same direction
  • All light enters and leaves at the same angle
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6
Q

What is scattered / diffuse reflection

A
  • Boundary is bumpy
  • All normals are in different directions
  • Light will be reflected in different directions
  • Cannot see reflections clearly
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