| 单词 | newton's cradle |
| 释义 | > as lemmasNewton's cradle Newton's cradle n. a toy consisting of a number of small metal balls (usually five), each suspended from a frame by strings from two points, so that the balls hang in a horizontal line with each one touching its neighbour.When one or more balls at the end of the line is pulled aside and released, so as to strike the nearest hanging ball, the transfer of momentum causes the same number of balls to be knocked away at the other end of the line, and the process repeats rhythmically, illustrating Newton's third law of motion.extracted from Newtonn.< as lemmas |
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