How to think about gravity - Jon Bergmann
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Published 2012-09-17
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, animation by TED-Ed.
All Comments (21)
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I'm sure Einstein must have turned over in his grave on hearing that last statement.
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I was in you're high school science class. you are awesome.
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I love watching TedEd and learning stuff but the intro and outro music is so damn mesmerizing!
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This is very interesting. Do you have any recommendations of experiments that show stuff like this. I think i deal better with actually practical real life experiments over theory... in other words I like to see experiments then come up with theories than the other way round. :-)
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really good explanation
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no problem! It's a common misunderstanding that just because we can quantify how something works (ie, with an equation), that we necessarily understand HOW it works. The equation describes the what, not the why. :)
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nobody: not a single soul: Jon Bergmann: what goes up, must come down me: wut O_O
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so the limit to how far something can attract, is endless? or depending on the size of M1 or M2?
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Amazing video! I'm 16 and, tough I still love your videos and I think they're interesting, they're never a challenge. This one was more of a challenge, but challenge is not bad. One of the best videos of yours :)
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Love the hint at the short movies "A trip to the moon"! :D
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What if gravitation is just any things mass displacing space time and the pressure of space time pushing back on the mass?
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Thanks for the lesson :-)
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Right, that's what I was saying. He proposed the how things are attracted together, not why they are attracted. He said that matter bends and warps spacetime. Why it happens, though, no one knows.
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@Supun Edirisinghe The force against gravity is sheer momentum. There are also other variables, but when I say momentum, I mean after 'the big bang'. If it all 'exploded' from a singular point/singularity and are now moving away, then there was a central point, thought to be from the big bang. These are all theories however.
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WHAT GOES UP MUST COME DOWN
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Doesnt the Higg's Boson give thing mass and mass then equals gravity?
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In one of your other lecture you said mass makes a curve in space time , and that curve causes gravity . Was that false ?
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In the equation he said, what is G? What is a gravitational constant? Is it the same for other things?
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Assume you reach the final simple definible form of nature (or whatever). What causes that form? QED?
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Great video!
