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• Mathematical_instrument abstract "A mathematical instrument is a tool or device used in the study or practice of mathematics. In geometry, construction of various proofs was done using only a compass and straight edge; arguments in these proofs relied only on idealized properties of these instruments and literal construction was regarded as only an approximation. In applied mathematics, mathematical instruments were used for measuring angles and distances, in astronomy, navigation, surveying and in the measurement of time. Instruments such as the astrolabe, the quadrant, and others were used to measure and accurately record the relative positions and movements of planets and other celestial objects. The sextant and other related instruments were essential for navigation at sea. Most instruments are used within the field of geometry, including the ruler, dividers, protractor, set square, compass, ellipsograph, T-square and opisometer. Others are used in arithmetic (for example the abacus, slide rule and calculator) or in algebra (the integraph). In astronomy, many have said the pyramids (along with Stonehenge) were actually instruments used for tracking the stars over long periods or for the annual planting seasons.".
• Mathematical_instrument thumbnail Astrolabe_(PSF).png?width=300.
• Mathematical_instrument wikiPageID "26722913".
• Mathematical_instrument wikiPageRevisionID "545877930".
• Mathematical_instrument hasPhotoCollection Mathematical_instrument.
• Mathematical_instrument subject Category:Mathematical_tools.
• Mathematical_instrument type Artifact100021939.
• Mathematical_instrument type Implement103563967.
• Mathematical_instrument type Instrumentality103575240.
• Mathematical_instrument type MathematicalTools.
• Mathematical_instrument type Object100002684.
• Mathematical_instrument type PhysicalEntity100001930.
• Mathematical_instrument type Tool104451818.
• Mathematical_instrument type Whole100003553.
• Mathematical_instrument comment "A mathematical instrument is a tool or device used in the study or practice of mathematics. In geometry, construction of various proofs was done using only a compass and straight edge; arguments in these proofs relied only on idealized properties of these instruments and literal construction was regarded as only an approximation. In applied mathematics, mathematical instruments were used for measuring angles and distances, in astronomy, navigation, surveying and in the measurement of time.".
• Mathematical_instrument label "Mathematical instrument".
• Mathematical_instrument sameAs m.0cm8tfr.
• Mathematical_instrument sameAs Q6786859.
• Mathematical_instrument sameAs Q6786859.
• Mathematical_instrument sameAs Mathematical_instrument.
• Mathematical_instrument wasDerivedFrom Mathematical_instrument?oldid=545877930.
• Mathematical_instrument depiction Astrolabe_(PSF).png.
• Mathematical_instrument isPrimaryTopicOf Mathematical_instrument.