The purpose of the radiation thermometer is to put common radiation doses in perspective. This tool can help people assess their own risk in a radiation emergency.
Radiation dose represents the amount of radiation absorbed by the body and is measured in millisieverts (mSv) [pronounced MIH-lee SEE-vert] or rem (1 rem equals 10 mSv). The millisievert unit of measurement is used internationally while the rem is used in the United States.
Below is an interactive tool with a slider and drop down menu. View the text version of this tool here.
To use the tool, move the slider with the cursor, use the + or − buttons, or select a value from the drop-down menu. The following information will be displayed as the slider moves:
- Radiation dose in mSv and rem
- Examples of common radiation sources at that dose
For more information on radiation dose, see https://www.cdc.gov/nceh/radiation/dose.html
*This is a logarithmic scale, where each gray line represents a ten times increase or decrease in the dose, rather than a one unit increase or decrease.
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 National Council on Radiation Protection and Measurements (NCRP). Ionizing radiation exposure of the population of the United States. NCRP 2009;160.
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 U.S. Department of Transportation (DOT), Federal Aviation Administration Advisory Circular. Radiation exposure of air carrier crewmembers – FAA AC 120-52 [online]. 1990. Available from URL: http://www.solarstorms.org/FAAAirlines.html