September 1 History Quiz — 5 Questions

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Oppenheimer–Snyder model published — September 1, 1939

Question 1 of 5

Which earlier paper by Oppenheimer and Robert Serber, which improved upon the work of Lev Davidovich Landau, did the 1939 model reference?

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Question 2 of 5

What specific geometric structure did Oppenheimer and Snyder identify as the boundary separating the collapsing star from the rest of the universe?

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Question 3 of 5

In what specific journal was Albert Einstein's 1939 article published, in which he claimed Schwarzschild singularities do not exist in physical reality?

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Question 4 of 5

In which year did the term 'black hole' first appear in print, following its coinage at a conference?

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Question 5 of 5

What specific type of solution to the Einstein field equations had Richard Chace Tolman previously obtained, which attracted his attention to the Oppenheimer-Snyder investigation?

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September 1 in the Blog

Oppenheimer–Snyder model published — September 1, 1939

J. Robert Oppenheimer and Hartland Snyder publish a model showing how massive stars collapse into black holes, contradicting Einstein's earlier denial.

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