<ul><li>Leon Cooper, the US condensed-matter physicist who shared the 1972 Nobel Prize for Physics, has passed away at the age of 94.</li><li>Cooper, along with Robert Schrieffer and John Bardeen, developed a theory of superconductivity in the late 1950s, explaining the absence of electrical resistance in certain materials at low temperatures.</li><li>Cooper's breakthrough BCS theory of superconductivity had applications in both condensed matter physics and particle physics.</li><li>Later in his career, Cooper turned to neuroscience and founded Brown's Institute for Brain and Neural Systems, making contributions to the field of artificial neural networks.</li></ul>

Superconductivity theorist Leon Cooper dies aged 94

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