- projection comparator
- projection comparator Spektrenmessprojektor m, Messprojektor m
English-German dictionary of Electrical Engineering and Electronics. 2013.
English-German dictionary of Electrical Engineering and Electronics. 2013.
Blink comparator — A blink comparator was a viewing apparatus used by astronomers to find differences between two photographs of the night sky shot using optical telescopes such as astrographs. It permitted rapidly switching from viewing one photograph to viewing… … Wikipedia
Ben Mayer — (? 2000) was an amateur astronomer perhaps best known for the invention of the Projection Blink Comparator (PROBLICOM). This low cost version of a tool used by professional astronomers allowed amateurs to contribute to some phases of serious… … Wikipedia
Swimming pool sanitation — articleissues refimprove = January 2008 technical = August 2008Swimming pool sanitation refers to both visual clarity and levels of microflora, such as bacteria and viruses in swimming pools. The goal of sanitation is to prevent the spread of… … Wikipedia
Microscope — An optical instrument that augments the power of the eye to see small objects. The name microscope was coined by Johannes Faber (1574 1629) who in 1628 borrowed from the Greek to combined micro , small with skopein, to view. Although the first… … Medical dictionary