A student of this university invented the calotype process. A professor of 
A student of this university invented the calotype process. A professor of this university led a 1919 expedition to observe a solar eclipse in order to test Einstein's theory of general relativity. Another professor of this university designed the difference and analytical engines. Michael Green is a current professor at this university, which is where Watson and Crick discovered DNA's structure. Isaac Newton and Stephen Hawking held the Lucasian Professorship of Mathematics at this university. For 10 points, name this English university that is a rival of Oxford.
A student of this university invented the calotype process. A professor of this university led a 1919 expedition to observe a solar eclipse in order to test Einstein's theory of general relativity.