Silvanus P. Thompson

Silvanus Phillips Thompson
Silvanus Thompson (1851–1916)
Born	19 June 1851 York, England
Died	12 June 1916 (1916-06-13) (aged 64)
Nationality	England
Fields	Physics, Electrical Engineering
Known for	Calculus Made Easy

Silvanus Phillips Thompson FRS (19 June 1851 – 12 June 1916) was a professor of physics at the City and Guilds Technical College in Finsbury, England. He was elected to the Royal Society in 1891 and was known for his work as an electrical engineer and as an author. Thompson's most enduring publication is his 1910 text Calculus Made Easy, which teaches the fundamentals of infinitesimal calculus, and is still in print. Thompson also wrote a popular physics text, Elementary Lessons in Electricity and Magnetism, as well as biographies of Lord Kelvin and Michael Faraday.

Silvanus Thompson was born in the year of the Great Exhibition of 1851 to a Quaker family in York, England. His father served as a master at the Quaker Bootham School in York and he also studied there. In 1873 Silvanus Thompson was made the science master at the school.

On 11 February 1876 he heard Sir William Crookes give an evening discourse at the Royal Institution on The Mechanical Action of Light when Crookes demonstrated his light mill or radiometer. Thompson was intrigued and stimulated and developed a major interest in light and optics (his other main interest being electromagnetism). In 1876 he was appointed as a lecturer in Physics at University College, Bristol, and later was made Professor in 1878 at the age of 27.