Dr. Willem de Sitter and Albert Einstein discussing equations that provide the best available language for describing the universe seen as a whole, on a CalTech blackboard, Pasadena, c. 1932.
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Dr. Willem de Sitter and Albert Einstein discussing equations that provide the best available language for describing the universe seen as a whole, on a CalTech blackboard, Pasadena, c. 1932.
Lol the smoke pipes