Wave Properties

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Wave Properties
Page 2711-18-08
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• 1. Reflection The bouncing of a wave off of a
  boundary. (Ex. A green shirt
  reflects only green light, absorbs all other
  colors)

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Law of Reflection

• The angle of incidence the angle of
  reflection.
• (Incoming angle Outgoing angle)

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Law of Reflection
Reflective Ray (Outgoing Ray)
Angle of Reflection
MIRROR
Normal
Angle of Incidence
Incident Ray (Incoming Ray)
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Normal

• A line drawn at a right angle to the boundary

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Angle of Incidence

• the angle between the incident ray and the normal
  (angle made by the incoming ray).

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Angle of Reflection

• the angle between the reflected ray and the
  normal (angle made by the leaving ray).

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Refraction

• The change of direction of a wave at the boundary
  between two different media.

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Refraction

• Examples
• Water, Gemstones

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Diffraction

• The spreading of waves around the edge of a
  barrier.

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Diffraction
Examples Grating over light, rainbow, sunset
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Interference of Waves

• Displacements of two or more waves, producing
  either larger or smaller waves.

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Types of Interference

• Constructive Interference Crests and troughs of
  different waves cross.
• The result is an INCREASE in the amplitude
  resulting from adding the amplitudes of both
  waves like 2 flutes playing the same note.

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Constructive Interference
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Types of Interference

• Destructive Interference Crests and troughs
  of different waves cross, but cancel each other
  out.

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Destructive Interference
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Standing Waves
Waves with stationary nodes. The wave appears to
be standing still. Made of nodes and anti-nodes.
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Standing Waves
Node the point in the medium that is
undisturbed. Anti-node the
point in the medium that moves.