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A 100-year-old pi trick might hint at deeper cosmic secrets
For more than a century, Srinivasa Ramanujan’s uncanny formulas for the number pi have looked like pure mathematical ...
Q: I recently tried to rent a car from Avis in Bangor, Maine. When I arrived at the counter, a representative said that I couldn’t rent from the company because I was on its Do Not Rent list. The ...
Our Mission: The ACS Committee on Analytical Reagents is the only committee in the world dedicated to establishing specifications and developing validated test methods for determining the purity of ...
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