Karmela Padavic-Callaghan

Physics Reporter, New Scientist

Karmela Padavic-Callaghan is a physics reporter at New Scientist. Her writing has appeared in Wired, Slate and Scientific American, among other publications. She lives in Brooklyn, New York.

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Written by Karmela Padavic-Callaghan

Abstract artwork featuring two interconnected blue shapes, one with concentric circles and the other with a droplet-like form, against a beige background.

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Mathematics

Imaginary numbers are real

These odd values were long dismissed as bookkeeping. Now physicists are proving that they describe the hidden shape of nature

Karmela Padavic-Callaghan