March 1920 Issue [Article] A new conception of the universe Download PDF Adjust Share Einstein's theory of relativity, with illustrative examples by Alfred J. (Alfred James) Lotka, This article is only available as a PDF to subscribers. Download PDF Tags 20th century Albert Einstein Contractions (Topology) Dimensional analysis Einstein field equations Light Measurement Relativity (Physics) Speed More from Alfred J. (Alfred James) Lotka Biassed evolution The architecture of matter Adjust Share