Template:POTD/2009-08-31

Picture of the day

A seventeenth century drawing of a camera obscura, an optical device whose invention eventually led to photography. Light from a scene enters through a hole in side of a room, as depicted here in a cutaway view (a box may be used, such as with a pinhole camera), and strikes a surface where it is reproduced, in color, and upside-down.Artist: Unknown