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一、引言人教版实验教科书《物理》必修1第50面在介绍伽利略对自由落体运动的研究时写了这样一段旁白:后人在用伽利略的器材重复他的实验时发现:铜球沿斜面滚下,如果斜面倾角超过5°就很难准确计时.伽利略把他的结论外推至90°是需要很大勇气的.后来,他的外推被实验证实了.学习到这里,学生都很想知
I. INTRODUCTION PEER EXPERIMENTAL Textbook “Physics” Compulsory 1 Requirement 50 In the introduction of Galileo’s study of the free fall movement, I wrote this narration: When the posterity repeated his experiment with Galileo’s equipment, he found that the bronze ball was along the slope. Rolling down, if the slope angle exceeds 5°, it will be difficult to accurately time. Galileo’s extrapolation of his conclusions to 90° would require great courage. Later, his extrapolation was confirmed by experiments. Students are very successful in learning here. Want to know