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A spring scale, spring balance or newton meter is a type of mechanical force gauge or weighing scale. It consists of a spring fixed at one end with a hook to attach an object at the other. [ 1 ] It works in accordance with Hooke's Law , which states that the force needed to extend or compress a spring by some distance scales linearly with ...
A Jolly balance from 1913. The Jolly balance is an instrument for determining specific gravities. Invented by the German physicist Philipp von Jolly in 1864, [1] it consists of a spring fastened at the top to a movable arm. At the lower end, the spring is provided with two small pans, one suspended beneath the other.
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A field-bred dog and a show-bred dog appear to be different breeds but are registered together. The gene pools are almost completely segregated and have been for at least 70 years. [2] A field-bred dog would not be competitive in a modern dog show, while a show dog would not have the speed or stamina to succeed in a field trial. [3]
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