How Does Gravity Affect Light?

The video explores the relationship between light and gravity, starting with historical predictions by John Mitchell and Henry Cavendish. It delves into Einstein's general theory of relativity, explaining concepts like gravitational redshift and the equivalence principle. The video also covers the deflection of light by gravity, using Huygens' principle and Einstein's calculations, which were verified by Eddington's observations during a solar eclipse.

How does Huygens' principle relate to the behavior of light in gravitational fields?

What is the significance of Einstein's calculation regarding the deflection of light?

Discuss the implications of light being both a wave and a particle in the context of gravity.

What does the text suggest about the nature of reality in relation to light and gravity?