Page:Carroll - Notes by an Oxford Chiel.djvu/43

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17
DYNAMICS OF A PARTICLE.

enlightened Particles. It is scarcely necessary to quote the well-known passage:—'Every moment, that can be snatched from academical duties, is devoted to furthering the cause of the popular Chancellor of the Exchequer.'—(Clarendon, History of the Great Rebellion.)

IV.

A Couple consists of a moving particle, raised to the degree M.A., and combined with what is technically called a 'better half.' The following are the principal characteristics of a Couple: (1) It may be easily transferred from point to point. (2) Whatever force of translation was possessed by the uncombined particle, (and this is often considerable,) is wholly lost when the Couple is formed. (3) The two forces constituting the Couple habitually act in opposite directions.