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Summary.
In science, 1905 is known as the annus mirabilis, or “miracle year,” the period when Albert Einstein, at the age of 26, published several discoveries that changed physics forever. By the summer of that year he’d explained Brownian motion, discovered the photoelectric effect (for which he won a Nobel Prize), and developed the theory of special relativity; then, before the year ended, he wrote the world’s most famous equation: E = mc².
