What is Gravity? From Newton to Einstein

Download your FREE infographic here http://www.emmalouiseosborne.com/Shop...

The theory of gravity from Isaac Newton's action at a distance to Einstein's curved spacetime- explained in under two minutes.

In this video, I explain what Einstein's equation E=mc^2 means and why this discovery became one of the most famous equations in the world.

Transcript:
In the 17th century, Isaac Newton came up with his theory of gravity. He said that objects that have mass, such as the Sun and the Earth, are attracted towards each other. The strength of that attraction depends on the distance between them and how heavy they are. The closer objects are or the more mass that they have, the stronger the gravitational attraction. Newton thought that this force acted instantly everywhere. Now this is a fantastic theory but over time it became clear it couldn't quite explain everything that was being observed. Then over 200 years later, Albert Einstein came a long. He said the universe has a speed limit, the speed of light. That means Newton's idea of gravity acting instantly just isn't possible. So this got Einstein thinking. He proposed that spacetime is actually curved and objects with mass bend spacetime. What we experience as gravity is actually the curvature within spacetime. The more mass something has, the more it bends spacetime, the stronger the gravitational force. It was this insight into gravity that lead Einstein to create his General Theory of Relativity, which was to have far reaching consequences.

Follow me on:
Facebook: www.facebook.com/TheExtraordinaryUniverse/
Twitter: twitter.com/Emmanigma
Instagram: www.instagram.com/emmanigma_/

Credits:
Written, animated and produced by Emma Osborne
Ident by Josef Brett
Start up funding from 'I'm a scientist get me out of here'
Scientific accuracy double checked by Prof. Nils Andersson