The symbol was adopted as a standard in the US by ANSI in 1969. The trefoil is black in the international version, which is also used in the United States. The original version used in the United States is magenta against a yellow background, and it is drawn with a central circle of radius R, an internal radius of 1.5 R and an external radius of 5 R for the blades, which are separated from each other by 60°. This resulted in the background being changed on the radiation hazard sign. Blue was typically used on information signs and the color tended to fade with weathering. However, a blue background for other signs started to be used extensively. 2225) was chosen because it was expensive and less likely to be used on other signs. The shade of magenta used (Martin Senour Roman Violet No. At the time, it was rendered as magenta, and was set on a blue background. It first appeared in 1946 at the University of California, Berkeley Radiation Laboratory.
The international radiation symbol is a trefoil around a small central circle representing radiation from an atom. Warning symbols are used in many places in lieu of or addition to written warnings as they are quickly recognized (faster than reading a written warning) and more commonly understood (the same symbol can be recognized as having the same meaning to speakers of different languages). Hazard symbols may appear with different colors, backgrounds, borders, and supplemental information in order to specify the type of hazard and the level of threat (for example, toxicity classes). The use of hazard symbols is often regulated by law and directed by standards organizations. Hazard symbols or warning symbols are recognisable symbols designed to warn about hazardous or dangerous materials, locations, or objects, including electromagnetic fields, electric currents harsh, toxic or unstable chemicals ( acids, poisons, explosives) and radioactivity. Skull and crossbones, a common symbol for poison and other sources of lethal danger ( GHS hazard pictograms)
For other uses, see Near-death (disambiguation).
0 kommentar(er)
