About
![Picture of John Herschel](https://upload.wikimedia.org/wikipedia/commons/6/6a/Sir_John_Frederick_William_Herschel._Mezzotint_by_W._Ward%2C_1_Wellcome_V0002717_%28cropped%29-34-%28brightness%29.jpg)
Sir John Frederick William Herschel, 1st Baronet (; 7 March 1792 – 11 May 1871) was an English polymath active as a mathematician, astronomer, chemist, inventor and experimental photographer who invented the blueprint and did botanical work.
Sir John Frederick William Herschel, 1st Baronet (; 7 March 1792 – 11 May 1871) was an English polymath active as a mathematician, astronomer, chemist, inventor and experimental photographer who invented the blueprint and did botanical work.