FSC300H5 Lecture Notes - Lecture 2: Henry Fox Talbot, Pixel, John Herschel
Document Summary
Midrange of particular points of interest or evidence. Close up of minutae or fine detail. Taxi cab downloads: series of still images taken with infrared, panic button, meter and doom light will trigger cameras. Camera obscura 1600s: dark chamber is an optical device that led to photography and camera, consists of a room with a hole in one side. Light from an external scene passes through hole and strikes a surface inside recreating the image with colour but upside down: projected onto paper to be traced for an accurate reproduction. Sir isaac newton (1666: isaac newton divides sunlight with a prism and discovers that white light is composed of 7 distinct colours. Professor j. schulze (1727: accidentally created 1st photo-sensitive compound through mixing chalk, nitric acid, and silver and noticing darkening on side of the flask upon exposure to light. 1727 accidental creation of the first photo-sensitive compound. 1839 sir john herschel first uses the phrase photography".
