Our quantum problem

In 1909, Ernest Rutherford, Hans Geiger and Ernest Marsden took a piece of radium and used it to fire charged particles at a sheet of gold foil.

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The Poetry And Process Behind Every Mathematical Proof

In mathematics, how do you know when you have proven something? originally appeared on Quora: the knowledge sharing network where compelling questions are answered by people with unique insights.

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If You Want To Start A Math Fight Ask This Question

What is this number: 0.99999999…? Let me give you one answer. Any repeating decimal represents a rational number, and in particular is the sum of a geometric series.

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