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 What Is A Photon? The Atom (How Small Is It Series #2) What Is Time? Elementary Particles (How Small Is It Series #3) World’s Largest Science Experiment: Biosphere 2