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
As Far as the Eye Can See As Far as the Eye Can See As Far as the Eye Can See is the debut album of Welsh alternative rock band People in Planes (or second album overall, as 2002's "Splendid Animation" was released under the previous band name of Tetra Splendour), released on 28 March 2006. After being dropped by EMI, the band recorded a new album at Wales' Monnow Valley Studio, containing new songs (with newly hired keyboard player Ian Russell) and unreleased Tetra Splendour material. The music video for the album's first single, "If You Talk Too Much (My Head Will Explode)", was directed by