'Niepce's process' definitions:

Definition of 'Niepce's process'

From: GCIDE

Niepce's process \Niep"ce's proc"ess\ (Photog.) A process, now no longer used, invented by J. N. Niepce, a French chemist, in 1829. It depends upon the action of light in rendering a thin layer of bitumen, with which the plate is coated, insoluble. [Obsolescent] [Webster 1913 Suppl.]