Rems Are Units of Radiation

Nuclear radiation i.s fbaisod on harmful tissue, such as a cancerous tumor, to selectively kill or shrink the tLssue in a technique known as radiation therapy. This application of nuclear radiation has saved millions of lives—a. clear-cut example of the benefits of nuclear technolc. Hie in.set shows the international symbol indicating an area where radioactive material is being handled or produced. 

Source Typical Amount Received ini Year (Millirems) 

Human Origin AAedical procedures Diagnostic X rays 40 

A commercially available radon test kit for the home. The canLs-tcr is unsealed in the area to be sampled. Radon seeping into the canister is ad.sorbcd by activated carbon within the canister. After several days, the canister is resealed and sent to a laboratory that determines the radon level by mca.suring the amount of radiation emitted by the atLsorbed radon. 

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