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发表于 2019-3-5 22:06:43
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宇宙中每個質點都以一種力吸引其他各個質點。這種力與各質點的質量的乘積成正比,與它們之間距離的平方成反比。
Every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.
——艾薩克·牛頓,《自然哲學的數學原理》 |
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