Home > Science > What Did Einstein Mean By Curved Spacetime? What Did Einstein Mean By Curved Spacetime? Science Share on Pinterest Two physicists explain one of the basic principles in Einstein’s general theory of relativity. Share on Pinterest Related Posts Elementary Particles (How Small Is It Series #3) The Higgs Boson (How Small Is It Series #4) Is Every Electron In The Universe The Same Electron? Gravity Visualized What Is A Photon?