Color theory primary colors work at all is that the imperfect pigments being used have sloped absorption curves, and thus change color with concentration. A pigment that is pure red at high concentrations can behave more like magenta at low concentrations. This allows it to make purples that would otherwise be impossible. Likewise, a blue that is ultramarine at high concentrations appears cyan at low concentrations, allowing it to be used to mix green. Chromium red pigments can appear orange, and then yellow, as the concentration is reduced. It is even possible to mix very low concentrations of the blue mentioned and
Israel Judo Association Israel Judo Association The Israel Judo Association (איגוד הג'ודו בישראל) is a sports association in Israel, and its headquarters is located in Tel Aviv, Israel. The Association operates Israel's national judo teams, holds the Israeli Judo Championships for different age classifications, and offers courses and seminars for instructors, coaches, and referees. It is a member of the European Judo Union. The Israel Judo Association was established in 1965. Amos Greenspan, a second dan, was Chairman of the Association in the early 1970s. At that time, the Association did not easily recognize belts earned overseas, as it sought to maintain very