Greek
philosophers describe the optical principles of the camera obscura
10th
century
Arabian
scholar Hassan ibn Hassan describes the camera obscura
1553
Giovanni
Battista Porta publishes details of construction and use of the camera
obscura. It is first used to view solar eclipses
1664-66
Isaac
Newton discovers that white light is composed of different colors
1725-27
Johann
Heinrich Schulze discovers and experiments with the darkening action of
light on mixtures of chalk and siver nitrate
1802
Thomas
Wedgewood following experiments of Schulze and Scheele produces silhouettes
by use of siver nitrate but is unable to fix the images
1806
William
Hyde Wollaston invents the camera lucida
1814-1826
Joseph
Nicéphore Niépce achieves his first photographic image with
a camera obscura
1819
John
Herschel discovers the photographic fixative, hyposulfite of soda
[BCE-1800]
[1825] [1850] [1875]
[1900] [1925] [1950]
[1975] [1990]
