About: Rotating spheres

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Isaac Newton's rotating spheres argument attempts to demonstrate that true rotational motion can be defined by observing the tension in the string joining two identical spheres. The basis of the argument is that all observers make two observations: the tension in the string joining the bodies (which is the same for all observers) and the rate of rotation of the spheres (which is different for observers with differing rates of rotation). Only for the truly non-rotating observer will the tension in the string be explained using only the observed rate of rotation. For all other observers a "correction" is required (a centrifugal force) that accounts for the tension calculated being different from the one expected using the observed rate of rotation. It is one of five arguments from the "prope

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rdfs:label	Rotating spheres (en)
rdfs:comment	Isaac Newton's rotating spheres argument attempts to demonstrate that true rotational motion can be defined by observing the tension in the string joining two identical spheres. The basis of the argument is that all observers make two observations: the tension in the string joining the bodies (which is the same for all observers) and the rate of rotation of the spheres (which is different for observers with differing rates of rotation). Only for the truly non-rotating observer will the tension in the string be explained using only the observed rate of rotation. For all other observers a "correction" is required (a centrifugal force) that accounts for the tension calculated being different from the one expected using the observed rate of rotation. It is one of five arguments from the "prope (en)
rdfs:seeAlso	Bucket argument
foaf:depiction
dcterms:subject	Thought experiments in physics Classical mechanics Isaac Newton
Wikipage page ID	19975340 (xsd:integer)
Wikipage revision ID	1122847476 (xsd:integer)
Link from a Wikipage to another Wikipage	Thought experiments in physics Argument Right-hand rule Uniform circular motion Mechanics of planar particle motion Geodesics in general relativity General relativity Coriolis force Cosmic background radiation Operational definition Ignazio Ciufolini Rotation around a fixed axis Mach's principle Space Ad hoc Centripetal force Wilkinson Microwave Anisotropy Probe Fictitious force Globe Gravitron Isaac Newton Absolute rotation Absolute space Classical mechanics John Archibald Wheeler Isaac Newton Plane of rotation Spacetime Tension (mechanics) Bucket argument Centrifugal force (rotating reference frame) Reactive centrifugal force Fixed stars Sagnac effect
sameAs	Rotating spheres Rotating spheres Rotating spheres Rotating spheres
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has abstract	Isaac Newton's rotating spheres argument attempts to demonstrate that true rotational motion can be defined by observing the tension in the string joining two identical spheres. The basis of the argument is that all observers make two observations: the tension in the string joining the bodies (which is the same for all observers) and the rate of rotation of the spheres (which is different for observers with differing rates of rotation). Only for the truly non-rotating observer will the tension in the string be explained using only the observed rate of rotation. For all other observers a "correction" is required (a centrifugal force) that accounts for the tension calculated being different from the one expected using the observed rate of rotation. It is one of five arguments from the "properties, causes, and effects" of true motion and rest that support his contention that, in general, true motion and rest cannot be defined as special instances of motion or rest relative to other bodies, but instead can be defined only by reference to absolute space. Alternatively, these experiments provide an operational definition of what is meant by "absolute rotation", and do not pretend to address the question of "rotation relative to what?" General relativity dispenses with absolute space and with physics whose cause is external to the system, with the concept of geodesics of spacetime. (en)
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is rdfs:seeAlso of	Absolute rotation
is Link from a Wikipage to another Wikipage of	Index of physics articles (R) Mechanics of planar particle motion Coriolis force Centrifugal force Fictitious force Absolute space and time Inertial frame of reference Bucket argument List of things named after Isaac Newton Non-inertial reference frame
is foaf:primaryTopic of	wikipedia-en:Rotating_spheres

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