The SciencesSeptember 1, 1925
Must Our Universe be Infinite?
The World May Appear to Us Very Different From What It Is
Stories by Nicolas P. Rashevsky
Space & PhysicsJanuary 1, 1925
The Size of the Universe
The Third of a Series of Articles on the Real Nature of the World
The SciencesDecember 1, 1924
Is Time the Fourth Dimension?