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  2. Hazard symbol - Wikipedia

    en.wikipedia.org/wiki/Hazard_symbol

    Hazard symbols are recognizable 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. The use of hazard symbols is often regulated by law and directed by standards organizations.

  3. ISO 21482 - Wikipedia

    en.wikipedia.org/wiki/ISO_21482

    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.

  4. File:Radiation warning symbol.svg - Wikipedia

    en.wikipedia.org/wiki/File:Radiation_warning...

    File:Radiation warning symbol.svg. Size of this PNG preview of this SVG file: 600 × 600 pixels. Other resolutions: 240 × 240 pixels | 480 × 480 pixels | 768 × 768 pixels | 1,024 × 1,024 pixels | 2,048 × 2,048 pixels. Original file ‎ (SVG file, nominally 600 × 600 pixels, file size: 646 bytes) This is a file from the Wikimedia Commons.

  5. File:Radiation warning symbol-US.svg - Wikipedia

    en.wikipedia.org/wiki/File:Radiation_warning...

    Description. Radiation warning symbol-US.svg. Correct US radiation warning symbol. Based on specification from [1]. 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.

  6. Long-term nuclear waste warning messages - Wikipedia

    en.wikipedia.org/wiki/Long-term_nuclear_waste...

    Long-term nuclear waste warning messages. 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 ...

  7. Radioactive contamination - Wikipedia

    en.wikipedia.org/wiki/Radioactive_contamination

    The radiation warning symbol (trefoil) Alpha radiation consists of helium-4 nucleus and is readily stopped by a sheet of paper. Beta radiation, consisting of electrons, is halted by an aluminium plate. Gamma radiation is eventually absorbed as it penetrates a dense material. Lead is good at absorbing gamma radiation, due to its density.

  8. Radiation exposure - Wikipedia

    en.wikipedia.org/wiki/Radiation_exposure

    Radiation exposure is a measure of the ionization of air due to ionizing radiation from photons. [1] It is defined as the electric charge freed by such radiation in a specified volume of air divided by the mass of that air. [1] As of 2007, "medical radiation exposure" was defined by the International Commission on Radiological Protection as ...

  9. File:Radiation warning symbol2.svg - Wikipedia

    en.wikipedia.org/wiki/File:Radiation_warning...

    Description. Radiation warning symbol2.svg. Correct radiation warning symbol. Based on specification from [1]. 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 ...

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