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 Journey of Flower released, and brought in more than 10 million active players and 200 million yuan in revenue in its first two months. In 2016, "The Journey of Flower" was featured on the "New York Times". The Journey of Flower The Journey of Flower () is a 2015 Chinese television series starring Wallace Huo and Zhao Liying. It is based on the fictional novel of the same name written by Fresh Guoguo, which is inspired from Daoist legends regarding the path to immortality. The series was broadcast on Hunan TV every Wednesdays and Thursdays for two episodes per day, from 9 June