Final answer:
The question is likely regarding the concept of Relative Biological Effectiveness (RBE) in radiation safety. RBE is used to determine the number of rems by multiplying it with the number of rads received. It provides a measure of the potential damage caused by different types of radiation.
Step-by-step explanation:
The question appears to be related to the field of radiology or radiation safety in medicine. The term 'RBT' seems to be a mistaken reference; possibly it intends to mean 'RBE', which stands for Relative Biological Effectiveness. This is a measure used in radiology to quantify the ability of radiation to cause biological damage. Conversely, 'RC' might be incorrectly used and could mean the 'Rayleigh Criterion', which is unrelated to this context, or 'rem', which is a unit of radiation dose equivalent.
Given the context, we can discuss RBE. The Relative Biological Effectiveness is used to weigh the number of rems of differing radiations based on their potential to cause damage. It's calculated by multiplying the RBE by the number of rads received. For example, for a radiation with an RBE of 10, the number of rems would be 10 times the number of rads experienced by an individual or tissue.