why Gravity is *NOT* a force 🤔 #modernscience

Katy Clough studied Engineering Science at Oxford University, before embarking on a short-lived career in finance. An Open University degree in Physics inspired her to return to academia and she subsequently completed her PhD at King’s College London under the supervision of Dr Eugene Lim. Her first postdoctoral position is at Goettingen University in Germany, the former home of many great physicists and mathematicians including Riemann, Noether, Hilbert, Planck and Heisenberg.

Be sure to Watch her full lecture here – https://www.youtube.com/watch?v=n4RbkTCp16k

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#oxford #astronomy #gravity #lecture #spacetime #physics

It’s probably deep in you because it’s one of the first things you learn when you’re at school to learn forces and you learn magnetism and you learn gravity so you say name a force and you say gravity but that’s wrong okay we shouldn’t actually teach children this I actually

Think we should just teach them SpaceTime Cur directly what is a force so the idea of a force is that it’s something that changes your speed or Direction so I’m flying my spaceship past a planet and it gets somehow pulled off course by this gravitational force

And you know we think of this as being like a big magnet that sort of attracts the spaceship towards the Earth but what I want to tell you is that there is no change of Direction so the picture that we should have is that it’s not a force

That’s pulling us of course it’s space-time curvature