In this series, we build together the theory of general relativity. This seventh video focuses on the Einstein equation, the key ingredient of the theory which allows us to relate our mathematical model to the physical world. For more videos, subscribe to the YouTube channel : null And if you liked this video, you can share it on social networks ! To support me on Patreon : http://www.patreon.com/ScienceClic or on Tipeee : http://tipeee.com/ScienceClic Facebook Page : http://facebook.com/ScienceClic Twitter : http://twitter.com/ScienceClic Instagram : http://instagram.com/ScienceClic Alessandro Roussel, For more info: http://www.alessandroroussel.com/en