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在下面括号内列举的科学家中,对发现和完善万有引力定律有贡献的是              
                          。(安培、牛顿、焦耳、第谷、卡文迪许、麦克斯韦、开普勒、法拉第)
第谷、开普勒、牛顿、卡文迪许解析:
第谷搜集记录天文观测资料、开普勒发现开普勒三定律、牛顿发现万有引力定律、卡文迪许测定万有引力常数
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