BASIC WAVE TERMS:

   Period- time it takes to complete one full cycle (T)
    Amplitude- maximum displacement from equilibrium point (A)
    Trough- the bottom curve of the wave
    Crest- the top curve of the wave
    Node- place of no amplitude=equilibrium
    Antinode- place of most disturbance
    Frequency- total number of waves in a certain amount of time (f) unit=hertz
    Height- double the amplitude or from crest to trough
    Wavelength- the distance of one full cycle
    Non-mechanical wave- does not need a medium-light is the only existent non-mechanical wave
    Mechanical wave- needs a medium-sound is an example because it needs air in order to propogate
    Compression- size of wavelength decreases
    Interference- two waves meet and get in each other's way
    Longitudinal wave- 3-D wave that travels up/down, left/right, and forward simultaneously
    Transverse wave- 2-D waves that move perpendicular to each other
    Wave pulse- a crest or trough-pulse of energy
    Wave train- a lot of pulses put together

BEHAVIOR OF WAVES:

   When a wave travels to a less dense material-> the wave will relect back without a phase shift.
    When a wave reaches a more dense material-> the wave will flip 180 degrees.
     The only way to change a wave's velocity is to change the medium in which the wave propagates.

CHARACTERISTICS OF LIGHT:

    Light displays both wave and particle behaviors.
    The speed of light is ALWAYS equal to "c" (3x10^8 m/s), in a vacuum.
    Light is not only visible light. It includes everything in the Electromagnectic Spectrum
            i.e. Gamma ,X-ray, Ultraviolet,Visible Light, Infared, Microwaves, and Radiowaves
            * Gamma rays have the smallest wavelength and the highest frequency (more energy).
    Heat is light, but light is not necessarily heat.

BOOK PROBLEMS

Chapter 13-->40, 42, 45, 49 (discussed in sections 8-11)