Top, the house where Isaac Newton was born, Woolsthorpe, Lincolnshire; centre, a letter written by Isaac Newton from Trinity College Cambridge, 20 June 1682; bottom, interior of the observatory in Newton's house on St. Martin's Street, London. Etching by C.J. Smith, 1836.

Licence: Public Domain Mark

Credit: Top, the house where Isaac Newton was born, Woolsthorpe, Lincolnshire; centre, a letter written by Isaac Newton from Trinity College Cambridge, 20 June 1682; bottom, interior of the observatory in Newton's house on St. Martin's Street, London. Etching by C.J. Smith, 1836. Wellcome Collection. Source: Wellcome Collection.