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
Love Has a Name engaging our emotions and leading us into the throne room." In a superbly positive review by Aaron Lewendon for Eden.co.uk, says "All in all, "Love Has a Name" is pure escapism in worship." Luchae Williams in a favourable review for Gateway News drew the conclusion that "In "Love Has a Name", Jesus Culture followers will appreciate an album that stays true to the collective”s format — vocally impressive power ballads and catchy pop-infused praise. Worship teams will appreciate the bulk of the album, which holds a definite congregational sound." Hallels music critic Timothy Yap awarded "Love Has a Name" a