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The Janka hardness test ( English: / ˈdʒæŋkə /; [1] German: [ˈjaŋka] ), created by Austrian-born American researcher Gabriel Janka (1864–1932), measures the resistance of a sample of wood to denting and wear. [citation needed] . It measures the force required to embed an 11.28-millimeter-diameter ( 716 in) steel ball halfway into a sample of wood.
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English Wikipedia (marked blue in the graph) is the most-read version of Wikipedia, accounting for 48% of the website's global traffic as of 2021. The English Wikipedia is the most edited Wikipedia's language version of all time. The English Wikipedia reached 4,000,000 registered user accounts on 1 April 2007, [23] over a year since the ...
Thermometer. Mercury thermometer (mercury-in-glass thermometer) for measurement of room temperature. [1] A thermometer is a device that measures temperature (the degree of hotness or coldness of an object) or temperature gradient (the rates of change of temperature in space). A thermometer has two important elements: (1) a temperature sensor (e ...
Wikipedia is a free online encyclopedia that anyone can edit, and millions already have . Wikipedia's purpose is to benefit readers by presenting information on all branches of knowledge. Hosted by the Wikimedia Foundation, it consists of freely editable content, whose articles also have numerous links to guide readers towards more information.
English is a West Germanic language in the Indo-European language family, whose speakers, called Anglophones, originated in early medieval England.[4][5][6] The namesake of the language is the Angles, one of the ancient Germanic peoples that migrated to the island of Great Britain. English is the most spoken language in the world, primarily ...
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