more from Frank Close

Single Idea 20637

[catalogued under 27. Natural Reality / B. Modern Physics / 2. Electrodynamics / a. Electrodynamics]

Full Idea

In Einstein's general theory, gravity acts also on energy and momentum, not simply on mass. For example, massless photons of light feel the gravitational attraction of the Sun and can be deflected.

Gist of Idea

In general relativity the energy and momentum of photons subjects them to gravity


Frank Close (Theories of Everything [2017], 5 'Planck')

Book Reference

Close,Frank: 'Theories of Everything' [Profile Books 2017], p.99

A Reaction

Ah, a puzzle solved. How come massless photons are bent by gravity?