The Strange Universe of Gravitational Lensing

The video explores gravitational lensing, a phenomenon where light is bent by gravity, causing shifts and magnifications in the universe. It discusses Einstein's theory of relativity, Eddington's 1919 experiment, and the applications of lensing in studying galaxies and dark matter. The video also covers the measurement of cosmic distances, the analysis of quasars, and the role of weak lensing in mapping the cosmic web. Additionally, it delves into the extreme lensing around black holes and the concept of quantum tunneling, touching on various interpretations of quantum mechanics.

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