An approach to unify gravity and quantum mechanics. String theory is a strong candidate for a Theory of Everything (TOE) because it can explain gravity not as a separate fundamental particle, but as one vibrational mode of strings.
Very Good Detailed Description
String Theory
How can we reconcile gravity with quantum physics? Why are there different types of particles? How can we verify the existence of additional dimensions? All these answers in 16 minutes!
0:00 - Introduction
2:17 - Strings and vibrations
4:03 - Dynamics and interactions
7:14 - Superstrings
10:09 - Compact dimensions
13:50 - Conclusion
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Alessandro Roussel,
For more info: http://www.alessandroroussel.com/en
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To learn more :
https://en.wikipedia.org/wiki/String_theory
https://www.damtp.cam.ac.uk/user/tong/string.html
https://www.youtube.com/watch?v=n7cOlBxtKSo

String Theory Explained - What is The True Nature of Reality?
Is String Theory the final solution for all of physic's questions or an overhyped dead end?This video was realised with the help of Dr. Alessandro Sfondrini ...
https://www.youtube.com/watch?v=Da-2h2B4faU&t=224s


Seonglae Cho