7 Свободни изкуства за Gravitation

PSM V15 D012 Gravitational pull on an orbiting object
PSM V11 D291 Gravitation explained
PSM V11 D289 Gravitation explained
The discovery of the law of gravitation - L.M. Glackens. LCCN2011647627
The discovery of the law of gravitation - L.M. Glackens. LCCN2011647627
1919 Eclipse expedition to test relativity
Portrait of Sir Isaac Newton, 1689
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