Suffix [edit]. -en. 1  Suffix for definite form singular of many common gender nouns, in particular those which end in a consonant or a stressed-i; see also-n. 2  Suffix for definite form plural of neuter nouns ending with consonant.
Events Leading up to Heliograph When NiÃ©pce first began working with his son who would draw the images they used in lithography because NiÃ©pce could not draw well. During that time the camera obscura was only used as a guide for drawing. This collaboration stopped when his son was drafted into the army and went to fight in the Battle of Waterloo.
The phonograph was invented by Thomas Edison and his team on July 18, 1877. His first successful recording and reproduction of intelligible sounds, achieved early in the following December, used a thin sheet of tin foil wrapped around a hand-cranked grooved metal cylinder.