| 单词 | centre of oscillation |
| 释义 | > as lemmascentre of oscillation centre of oscillation n. now rare the centre of percussion of an object (esp. a pendulum) which pivots about a point located at one of its ends. ΘΚΠ the world > matter > physics > mechanics > types of motion > [noun] > vibration or oscillation > centre of oscillation centre of oscillation1694 1694 W. Leybourn Recreations Automatical i. 2 in Pleasure with Profit [They] found the Length to be 39 Inches, and .325 Parts, which a little exceedeth the other, and it may be was justned [i.e. adjusted] by Monsieur Hugen's Rule for the Center of Oscillation. 1748 T. Rutherforth Syst. Nat. Philos. I. 126 If we strike with the center of oscillation, there will be no danger of breaking the cane, since the whole motion of it is spent in the blow upon the obstacle. 1843 W. B. Carpenter Pop. Cycl. Nat. Sci.: Mech. Philos. ix. 213 This point is termed the centre of oscillation; and its distance from the centre of suspension is the virtual or acting length of the pendulum. 1947 Pop. Sci. Monthly Nov. 213/1 In a uniform unweighted rod, the center of oscillation is about two-thirds the distance from the point of support. 2011 L. P. Pook Understanding Pendulums iii. 29 The centre of oscillation is sometimes called the centre of percussion. < as lemmas |
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