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* The first public radio broadcast takes place from the ''Metropolitan Opera House'' in New York. * Infrared photographs are first published in the Royal Photographic Society's journal. * '''October 19''' - Birth of Subrahmanyan Chandrasekhar, Indian-born astrophysicist, who . <br> He was awarded the Nobel prize ([[1983]]) in physics for his studies on the physical processes important to the structure and evolution of stars.