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
Bob the Angry Flower the Angry Flower experiences all emotions at exaggerated levels. He builds giant killer robots, he deploys world-destroying lasers. He is sort of like your id with an unlimited budget." Notley has released his "Bob the Angry Flower" work under an original license. The license only enables sale of T-shirts with "Bob the Angry Flower" material from CafePress stores, and also requires that the image is sent to Notley, and by implication the link of the relevant CafePress store.<ref name='angryflower.com/t-shirts'> </ref> In 2006, Bob the Angry Flower was released as a collection by Tachyon Publications. Bob the Angry Flower Bob the