In 1841, Sir William Henry Fox Talbot secured a patent for his Calotype process. The following year, his groundbreaking work earned him the esteemed Rumford Medal from the Royal Society.

William Henry Fox Talbot was born on 11 February 1800 in ... He called this the 'calotype' and patented the process in 1841. The following year was rewarded with a medal from the Royal Society ...