Xerography or electrophotography is a dry photocopying technique. Its fundamental principle was invented by Hungarian physicist PÃ¡l SelÃ©nyi and based on SelÃ©nyi's publications Chester Carlson applied for and was awarded U.S. Patent 2,297,691 on October 6, 1942. The technique was originally called electrophotography.
A retrospective, generally, is a look back at events that took place, or works that were produced, in the past. As a noun, retrospective has specific meanings in medicine, software development, popular culture and the arts. It is applied as an adjective, synonymous with the term retroactive, to laws, standards, and awards.
Introspection means to look inside, and describes the act of thinking about your own actions or inner thoughts. When you examine what you do, say, think or feel and how it affects your life and the lives of others, that's introspection. It's easy to piece together the meaning of the noun introspection. Consider that intro means within, while spec is from the Latin for look..