都说牛顿发现万有引律是因为一个苹果从苹果树落下砸中了牛顿的脑袋,事情真的是这样吗?此时,一个23岁的青年所在的剑桥大学也因瘟疫被迫关门停课,他只好回到守寡母亲的农场伍尔斯普索庄园,在那里他呆了18个月,也就是这18个月的时间里,这个偶然发现改写了世界格局,这个伟大的发现起源于一个苹果,这个苹果砸了这个年轻人的脑袋,而这个年轻人正是牛顿!
assuredly, the reason is, that the earth draws it. there must be a drawing power in matter. & the sum of the drawing power in the matter of the earth must be in the earths centre, not in any side of the earth. therefore dos this apple fall perpendicularly, or toward the centre. if matter thus draws matter;