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A centrifuge is a device that uses centrifugal force to subject a specimen to a specified constant force ... invented a whirling arm apparatus to determine drag.
Centrifuges are used in science and industry to separate substances. In the reference frame spinning with the centrifuge, the centrifugal force induces a hydrostatic pressure gradient in fluid-filled tubes oriented perpendicular to the axis of rotation, giving rise to large buoyant forces which push low-density particles inward. Elements or ...
English military engineer Benjamin Robins (1707–1751) invented a whirling arm centrifuge to determine drag. 1766 British chemist Henry Cavendish determines the specific weight of hydrogen gas.
As a verb, this word means "to extend" an arm/hand toward an object (in order to touch or grasp it). OK, that's it for hints—I don't want to totally give it away before revealing the answer!
The first symptoms of kidney failure are silent. Failing kidneys can’t remove extra fluid from the body, nor can they filter molecules like urea, which can be toxic in high dosages, from the blood.
New versions attach to a user’s arm and can pair with a smartphone to give blood sugar readings throughout the day. CGMs, which the Food and Drug Administration first approved in 1999, have ...
His whirling arm was 5 feet (1.5 m) long and attained speeds between 10 and 20 feet per second (3 to 6 m/s). Otto Lilienthal used a rotating arm to make measurements on wing airfoils with varying angles of attack, establishing their lift-to-drag ratio polar diagrams, but was lacking the notions of induced drag and Reynolds numbers. [5]
1765 – Jean-Charles de Borda experiments with whirling arm experiments. He corrects the available theories of air friction. [15] 1766 – de Borda publishes "Mémoire sur l’Écoulement des Fluides par les Orifices des Vases" on hydraulics and resistance of fluid through orifices.