There are four forces in our universe. Two act only at the very smallest scales and one only at the very biggest. For everything inbetween, there is electromagnetism. The theory of electromagnetism is described by four gloriously simple and beautiful vector calculus equations known as the Maxwell equations. These are the first genuinely fundamental equations that we meet in our physics education and they survive, essentially unchanged, in our best modern theories of physics. They also serve as a blueprint…
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David Tong on Open Questions in Quantum Field Theory David Tong joins Sean Carroll to discuss some of the most fascinating ideas of Quantum Field Theory, as well as his new Lectures on Theoretical Physics series from Cambridge.
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