File:Reynolds fluid turbulence experiment 1883.jpg

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Description	English: 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. Français : Illustration tirée de l'article historique de Reynolds sur la formation des écoulements turbulents. L’eau s’écoule depuis le réservoir au niveau de l’expérimentateur jusqu’au sous-sol à travers une tuyauterie transparente. La nature turbulente ou laminaire de l’écoulement peut ainsi être observée précisément.
Date	15 March 1883
Source	Scan from book. This is Figure 13 in Reynold’s paper marked "received and read" March 15, 1883. Paper was reproduced in his 1901 book "Papers on Mechanical and Physical Subjects, vol.2" which is today published by Forgotten Books.
Author	Osborne Reynolds

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