Cavendish Professor of Physics

The Cavendish Professorship is one of the senior faculty positions in physics at the University of Cambridge. It was founded on 9 February 1871 alongside the famous Cavendish Laboratory, which was completed three years later. William Cavendish, 7th Duke of Devonshire endowed both the professorship and laboratory in honor of his relative, chemist and physicist Henry Cavendish.

Before the middle of the nineteenth century, science was largely pursued by individuals, either wealthy amateurs or academics working in their college accommodation. In 1869, a committee formed by the Senate reported that creating a dedicated Laboratory and Professorship would cost £6,300. The then chancellor of the university, William Cavendish met that cost privately 18 months later, and named the department in honor of his relative, the 18th century natural philosopher Henry Cavendish.

The first Cavendish Professor was the then relatively obscure James Clerk Maxwell, who had yet to complete the work that would make him the most renowned physicist of the nineteenth century. His appointment was announced on 8 March 1871, and despite initial disappointment at his being offered the place, his inaugural lecture was looked forward to by his likely students as well as his future colleagues. However, it was poorly advertised, so it was only to his students that he laid out his plans for physics at Cambridge. When Maxwell began the actual course a few days later with a lecture on heat, it was attended by academics in formal dress, in the belief that it was the first lecture. Maxwell spent the next three years supervising the construction of the dedicated Cavendish Laboratory, and published in 1873 A Treatise on Electricity and Magnetism. Maxwell's health deteriorated a short time into his tenure, and he died in 1879, aged 48.

Lord Rayleigh replaced Maxwell immediately upon his death, being universally agreed upon as the only successor. Raleigh spent £1500 updating the laboratory, and created a new practical course, revolutionising practical instruction, and in 1882 he allowed women to take the course as well. In his five years as Cavendish Professor, he published 50 papers and expanded the number of students to 48.

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