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- W2038690178 abstract "The authors reply to criticism of their work in a recent paper, McFarlane and McGill (1978, to be referred to as MM) who considered the question of 'Light ray and particle paths on a rotating disc'. MM use a different approach to the study of rotation and it is felt that it is largely due to this that most of the misconceptions embodied in their criticisms arise. They use a particular metric ds2=dt2(1- omega 2r2/c2)-c-2(dr2+r2d theta 2+2 omega r2d theta dt) for the rotating system and derive all of their results from this. This metric is derived by means of a Galilean transformation in which r and t are the same as in the inertial system of the centre but theta is related to the angle in the inertial system of the centre by the subtraction of omega t. It is not generally accepted that this is the correct metric to apply to a rotating system, although it may be applied for small values of omega r/c (see, for example, Atwater 1974). The use of the matrix in equation (1) results in solutions for the geodesics with local particle velocities greater than c. This, the authors find to be completely unacceptable. In contrast to this approach they have been concerned to attempt to produce a description of the rotating system from the point of view of measurements based on the physical information directly available to an observer fixed at any point on a rotating system which need not necessarily be a disc." @default.
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- W2038690178 date "1978-11-01" @default.
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- W2038690178 title "'Light ray and particle paths on a rotating disc': a reply to criticisms therein" @default.
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- W2038690178 doi "https://doi.org/10.1088/0305-4470/11/11/001" @default.
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