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The Physics Classroom (1118 words) |
 | A crest introduced at one end will destructively interfere in the exact middle of the snakey with a second crest introduced from the same end if the introduction of the single pulses is performed with perfect timing. |
| Regardless of the number of crests and troughs which are in between, if a crest is introduced at the instant another crest is undergoing its fixed end reflection, a node (point of no displacement) will be formed in the middle of the medium. |
| If a crest is introduced at the instant another crest is at the halfway point across the medium, then an antinode (point of maximum displacement) will be formed in the middle of the medium by means of constructive interference. |
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