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Image: Reynolds fluid turbulence experiment 1883

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Description: Illustration taken from fluid dynamicist Osborne Reynolds’ 1883 influential paper on "An experimental investigation of the circumstances which determine whether the motion of water in parallel channels shall be direct or sinuous and of the law of resistance in parallel channels". Water flows from the tank near the experimenter down to below the ground, through a transparent tube; and dye is injected in the middle of the flow. The turbulent or laminar nature of the flow can therefore be observed precisely.
Usage Terms: Public domain

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