Diaphragm (optics) 1889 "Dictionary of Photography" (see figure), but disappeared after Ernst Abbe's theory of stops unified these concepts. According to Rudolf Kingslake, the inventor of the iris diaphragm is unknown. Others credit Joseph Nicéphore Niépce for this device, around 1820. Mr. J. H. Brown, a member of the Royal Microscopical Society, appears to have invented a popular improved iris diaphragm by 1867. Kingslake has more definite histories for some other diaphragm types, such as M. Noton's adjustable "cat eye" diaphragm of two sliding squares in 1856, and the Waterhouse stops of John Waterhouse in 1858. Diaphragm (optics) In optics, a diaphragm
The Flower Kings Stolt's brother Michael on bass and Tomas Bodin on keyboards. The five performed their first gig on 20 August 1994 at an outdoor festival in Uppsala, Stolt's hometown and the city where "The Flower King" was recorded. After they decided to become a full time band, they officially adopted the name The Flower Kings, named after Stolt's album. Stolt had produced a list of potential titles for the record, one of which was "The Flower King", and chose it because of its positive meaning and its reference to the hippie era of the 1960s. After performing a series of concerts