How to Think About GravityJon Bergmann

View full lesson here: 在家DIY的最佳美甲://ed.ted.com/lessons/jon-bergmann-how-to-think-about-gravity

Did you know that when you fall down, the earth falls up to meet you? Explore the counterintuitive equation that describes gravity.

Lesson by Jon Bergmann, TED-Ed的动画.

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