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 Pot Men Never Be Wrong" failed to chart in April 1968, the label had the touring band record "In A Moment of Madness" by Roger Greenaway without the involvement of Carter and Lewis, which also failed to chart. As Mark Frumento wrote in the liner notes of the retrospective Flower Pot Men album, "Listen to the Flowers Grow": ""At this point Deram decided that the Flower Pot Men name was no longer commercial and the next single, "Piccolo Man" was released under the band name 'Friends' ... The final Flower Pot Men single was released in 1969, but this time the writing