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The sign is commonly referred to as a radioactivity warning sign, but it is actually a warning sign of ionizing radiation. Ionizing radiation is a much broader category than radioactivity alone, as many non-radioactive sources also emit potentially dangerous levels of ionizing radiation.
Long-term nuclear waste warning messages are communication attempts intended to deter human intrusion at nuclear waste repositories in the far future, within or above the order of magnitude of 10,000 years. Nuclear semiotics is an interdisciplinary field of research, first established by the American Human Interference Task Force in 1981.
ISO 21482 is a technical standard that specifies the design and usage of a "supplemental radiation warning symbol", a warning symbol.It is intended to warn people of the dangers of radiation hazards posed by sealed sources, and encourage the viewer to get away from the source.
Alternative sign. Division 2.1 Non-flammable non-toxic gases – Gases which: are asphyxiant – gases which dilute or replace the oxygen normally in the atmosphere; or; are oxidizing – gases which may, generally by providing oxygen, cause or contribute to the combustion of other material more than air does; or; do not come under the other ...
Perfect symbol. Revert if unwanted. 09:02, 3 September 2015: 600 × 600 (306 bytes) Rettinghaus: Correct ISO 3864-4 coloring (RAL 1003) 19:20, 2 April 2013: 600 × 600 (303 bytes) Nyerguds: Reverted to version as of 00:10, 10 December 2011. I see no reason to replace a nicely optimized svg with a bloated inkscape version again. 19:25, 27 ...
The symbol now known internationally as the "peace symbol" or "peace sign", was created in 1958 as a symbol for Britain's campaign for nuclear disarmament. [53] It went on to be widely adopted in the American anti-war movement in the 1960s and was re-interpreted as generically representing world peace.
Symbol Name Meaning SI unit of measure alpha: alpha particle: angular acceleration: radian per second squared (rad/s 2) fine-structure constant: unitless beta: velocity in terms of the speed of light c: unitless beta particle: gamma: Lorentz factor: unitless photon: gamma ray: shear strain: radian
ISO 3864-3:2012 Part 3: Design principles for graphical symbols for use in safety signs [3] ISO 3864-4:2011 Part 4: Colorimetric and photometric properties of safety sign materials [ 4 ] Part 1 explains how to layout the components of safety signage, dictate the color scheme and sizing information.