Diaphragm (optics) the lens. The centre of the diaphragm's aperture coincides with the optical axis of the lens system. Most modern cameras use a type of adjustable diaphragm known as an iris diaphragm, and often referred to simply as an iris. See the articles on aperture and f-number for the photographic effect and system of quantification of varying the opening in the diaphragm. A natural optical system that has a diaphragm and an aperture is the human eye. The iris is the diaphragm, and the opening in the iris of the eye (the pupil) is the aperture. An analogous dev in a
A Flower in a Sinful Sea addition the word sounds similar to "hua" (T: 華, S: 华, P: "huá", W: "hua"), meaning China. The title has also been translated as "Flower in a Sea of Sin", "Flower in the Sea of Retribution", "Flower in the World of Retribution", "Flower in a Sea of Karma", "Flower in the Sea of Evil" or "A Flower in an Ocean of Sin". In the earlier versions of the novel by Jin Tianhe, Sai Jinhua, a courtesan, travels to the west with her husband, a scholar. They meet Russian anarchists and the novel describes the history of the Russian anarchist movement.