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File:Sector with dividers, probably Dresden, c. 1630 - Mathematisch-Physikalischer Salon, Dresden - DSC08048.JPG

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English: Brass sector with dividers, probably made in Dresden circa 1630, exhibited in the Mathematisch-Physikalischer Salon (Zwinger), Dresden, Germany. Four scales are visible on this sector; from inside to outside they are labeled "Lin. Arithmetica", an ordinary linear scale; "Lin. Stereometrica", a scale proportional to the cube root of its values, for working with volumes of solids; "Lin. Astronomica", some sort of scale involving trigonometric functions; and "Lin. Geometrica", a scale proportional to the square root of its values, for working with areas of plane figures. The dividers are positioned on the "Lin. Arithmetica" scale, marking the distance between corresponding marks, in roughly the way they would be held by someone using the sector. This artwork is old enough so that it is in the public domain. Photography was permitted in the museum without restriction.
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8 December 2013

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current17:19, 31 January 2015Thumbnail for version as of 17:19, 31 January 20155,043 × 2,296 (2.42 MB)DaderotUser created page with UploadWizard
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