What happens when two wave pulses collide?. Interference – Two waves “collide,” but pass...
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![Page 1: What happens when two wave pulses collide?. Interference – Two waves “collide,” but pass through each other undamaged – Superposition Principle: when.](https://reader035.fdocuments.in/reader035/viewer/2022070415/5697bfd21a28abf838cab84e/html5/thumbnails/1.jpg)
What happens when two wave pulses collide?
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• Interference– Two waves “collide,” but pass through each
other undamaged– Superposition Principle: when waves interfere
with each other, the resulting wave is the sum of their amplitude at each point.
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Destructive Interference
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Constructive Interference
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Constructive Interference
• crests aligned with crests
• waves are “out of phase”
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Destructive Interference
• crests aligned with troughs
• waves are “out of phase”
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• Interference– Add the amplitudes of the waves• Above axis is positive, below is negative
– The result is the superposition of the waves– Constructive wave gets bigger– Destructive wave gets smaller
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What if we send a bunch of pulses down the spring and let them reflect back? How will they interfere with one another?
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Parts of a Wave
2 4 6 x(m)
3
-3y(m)
Crest/antinode
Trough/antinode
node
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Wave Parameters
3
-3
2 4 6 x(m)
y(m)
amplitude
wavelength
wavelength
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• You can make a standing wave on a spring. – Figure out how to make different standing
waves.– What would a graph of wavelength vs. # of
antinodes look like?– Collect the data to make this graph.
Wav
elen
gth
# of antinodes