Use the drop-down menus to complete each sentence. before starting the simulation and having the waves encounter the barrier, th
e wavelength is manipulated. this is the variable. the pattern of diffraction will vary as a result of the change in wavelength. the diffraction angle is therefore the variable. a "constant" is a parameter that stays the same regardless of the variables. the parameter of the barrier that is held constant is the .
The frequency of a wave is the number of waves that passes through a point in a certain time. The less waves that pass in a period of time the lower the frequency of the wave. The more waves that pass in a period of time the higher the frequency of the wave. When measuring wave length the time period used is usually one second.
