100 years before quantum mechanics, one scientist glimpsed a link between light and matter

Irish physicist William Rowan Hamilton’s pioneering work contained hints of the enigmatic wave–particle duality that governs the universe.
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Can You Solve The Latest Math Puzzle Circling The Internet?

We all love a mathematical brainteaser here at IFLS. Monty Hall? Done it mate. Two circles shoved into a quadrilateral of unknown size? Been there, solved that. Some Singaporean kids’ seemingly ...