Wave Behavior

Behavior 1: Superposition~ 2 or more waves adding together to form a resultant wave. (Waves will interfere with each other) Constructive Interference ~ waves add together and their resultant amplitude increases Destructive Interference ~ waves add together and their amplitudes cancel each other.

Constructive Interference

Destructive Interference

Examples: Colors

Examples: Ripples

Examples: Ducks ?

Behavior 2: Reflections Reflection on a fixed end: reflected wave is opposite (upside down) Reflection on a free end: reflected wave is on the same side demos

Fixed End

Free End

Behavior 3: Diffraction ~ waves will bend when they hit a barrier

Example: Break wall

Example: CD’s

Head light with no diffraction Example: Eyes Head light with no diffraction

Diffraction effect caused by pupil Example: Eyes Diffraction effect caused by pupil

Diffraction effect caused by eyelashes Example: Eyes Diffraction effect caused by eyelashes

Diffraction effect caused by pupil and eyelashes Example: Eyes Diffraction effect caused by pupil and eyelashes

Diffraction effect caused by pupil and eyelashes and fog Example: Eyes Diffraction effect caused by pupil and eyelashes and fog

Example: Eyes 1 2 3 4 5