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The international radiation symbol is a trefoil around a small central circle representing radiation from an atom. It first appeared in 1946 at the University of California, Berkeley Radiation Laboratory. [4] At the time, it was rendered as magenta, and was set on a blue background.
While yellow is specified in ISO 3864-4 for usage with warning symbols and messages, it was found that red was more effective at conveying "danger" than yellow, which was viewed as the less serious "caution". [4] The symbol consists of three elements: A trefoil on the top, representing and warning of radiation. Five lines emanate in an arc ...
Panel 1: An individual is opening the housing of a piece of machinery containing a radioactive source, marked with a radiation trefoil symbol. Panel 2: The individual running away, after opening up the housing, revealing a radioactive source, and the ISO 21482 safety symbol inside the machine, near the radioactive source (represented as a black ...
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This file is saved in human-editable plain text format. Any editing of the image or creation of any derivative work should be performed using a text editor.Please do not upload edits saved or exported with Inkscape or similar vector graphics editors, as well as with automated tools such as SVG Translate.
Correct radiation warning symbol. Based on specification from . The magenta-on-yellow symbol can be found at Image:radiation warning symbol-US.svg. Created by user:Fibonacci in gedit. This image is highly optimized SVG, and uses less than 1K. For the same symbol with a yellow background, see Image:Radiation warning symbol.svg. Date
Correct US radiation warning symbol. Based on specification from . The black-on-yellow (international) symbol can be found at Radiation warning symbol.svg. The black-on-yellow version is acceptable in the US as well. For a version that is black with no background, see Radiation warning symbol2.svg. Created by myself in Inkscape. Date
Internationally known symbol - warning sign of ionizing radiation Items portrayed in this file depicts. inception. 19 January 2006 ...