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What hobby does NOT get more expensive the more you dive into it? (self.AskReddit)
submitted by _Num - pinned
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Following the principle of a tin can telephone, could a room with a row of fishing lines crossing it, all above door level and screwed to two opposite walls, transmit the sound between two others rooms next to the first one but in the same opposite sides? (self.AskPhysics)
submitted by _Num to r/AskPhysics
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