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.
Fisher was an engineer who first developed the Spirograph as a drafting tool. His family encouraged him to market the Spirograph as a game, and it was a huge hit at the Nuremburg International Toy Fair in 1965. U.S. toy company Kenner began marketing Spirograph in 1966. In 1967, it was named Toy of the Year.