Roentgen equivalent man
from class:
College Physics I – Introduction
Definition
The roentgen equivalent man (rem) is a unit used to measure the biological effect of ionizing radiation on human tissue. It combines the amount of radiation absorbed with its medical impact.
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5 Must Know Facts For Your Next Test
- 1 rem is equivalent to 0.01 sieverts (Sv) in the International System of Units.
- Rem accounts for both the energy deposited and the effectiveness of that type of radiation in causing biological damage.
- The rem unit takes into consideration different types of ionizing radiation, such as alpha particles, beta particles, and gamma rays, each with varying biological impacts.
- Occupational exposure limits for radiation workers are often expressed in rems; typically, the limit is set to 5 rems per year.
- The concept of dose equivalent measured in rems is crucial for ensuring radiological protection standards.
Review Questions
- What does the roentgen equivalent man (rem) measure?
- How many sieverts are equivalent to one rem?
- Why is it important to consider different types of ionizing radiation when measuring in rems?
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