What was Einstein's miracle year?
In 1905, often called Albert Einstein's "miracle year," he published four groundbreaking papers, including special relativity and the idea behind E=mc².
Reference: Encyclopaedia Britannica
In 1905, often called Albert Einstein's "miracle year," he published four groundbreaking papers, including special relativity and the idea behind E=mc².
In 1936, Alan Turing described the Turing machine, a theoretical model of a computer.
Chess traces back to an Indian game called chaturanga, played around the 6th century CE, whose pieces represented the four divisions of an ancient army.