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--- demonstrations:3_oscillations_and_waves:wave_model-longitudinal:start [2019/02/14 23:33] – external edit 127.0.0.1
+++ demonstrations:3_oscillations_and_waves:wave_model-longitudinal:start [2020/01/17 19:40] (current) – demoroom
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 ====== Wave Model-longitudinal ======
-{{tag> needs_review untagged unlocated}}
+{{tag> waves repair untagged unlocated}}
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 This small wave machine demonstrates longitudinal wave motion.
+A series of bars slotted into grooves on a hand-cranked cylinder behind that correspond with waves.
+Some of the bars are not in their grooves, and resistance to turning suggests there may be obstructions.
 ===== Purpose =====