Radio 4 in Four - How the first photographic negative was created - ÃÛÑ¿´«Ã½ Sounds

Radio 4 in Four - How the first photographic negative was created - ÃÛÑ¿´«Ã½ Sounds
How the first photographic negative was created
In 1835 William Fox Talbot preserved a moment of the past forever.