You start with two waves of equal wavelengths $\lambda$, which you can change by using
the slider below.
The centers are the sources of the waves, represented by yellow dots as shown.
You can drag the wave centers around and change the initial position.
The red in the
lower left sets the scale so you know how far apart the wave centers are. Hit
Start button to start the waves propagating outward from
each center, the blue represents the wave front and the distance between the blue tell you the
wavelength. Where the blue waves intersect is where interference is constructive, since the distance
from each wave at that position to each wave source center is an integer number of wavelengths.
Hit the Stop button
to stop the simulation and
to clear.
Last updated Nov 7, 2022 Drew Baden
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