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 of 10,000 equivalent album units of "Love Has a Name", thus topping the Billboard Christian Albums chart in the same week. "Love Has a Name" is Jesus Culture's second album to attain the top position on the chart after their 2014 live LP, "Unstoppable Love'. CCM Magazine's Matt Conner rated the album four stars out of five, saying that it is filled with "stirring anthems and ballads," and describes the live arrangement as "exciting and inspiring." Bestowing the album a four-point-four star rating in a review at The Christian Beat, Emily Caroline states that "In "Love Has a Name", the