I've been told that a property of waves is that when two waves of the same frequency meet, they can either interfere constructively or destructively, depending on how much they are in phase with each other. However, in band, it doesn't matter how far apart they are, or where you, the listener are, if 10 trumpets play together at the same note, then they will always sound louder. It seems logically that if each instrument was creating individual alternating high and low pressure zones, then entropy would never allow those to all lign up perfectly, and eventually all those vibrations, if you had enough instruments, would just interfere so much that you were left with just regular air. But this never happens, the instruments always sound louder.
2006-12-06
13:51:58
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9 answers
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asked by
Curious George
1
in
Physics