Refraction

1
Refraction
Perhaps the most common example of refraction is
Sunlight refracts through droplets of water in
the atmosphere, separating white light into a
rainbow of color. (Just like a prism.)
2
3. Absorption

• If a wave strikes an object and does not reflect
  off the surface or pass through, it is absorbed.
• In this case, the wave energy is converted into
  heat and the temperature of the object increases.
• Dark colors absorb more energy than light colors.
  

3
Interference

• Sometimes wave run into each other. When this
  occurs, the waves combine to form a new wave.

4
Constructive Interference

• If the waves add together in phase, they build on
  one another. A larger amplitude wave results.

5
Destructive Interference

• If the waves add together out of phase, they
  cancel one another out. A smaller amplitude wave
  results.

6
Interference Beats

• Sometimes waves combine that work their way into
  and out of phase. This causes alternating
  patterns of constructive and destructive
  interference called beats.