Measuring Radiation 1963

When scientists measure radiation, they use different terms depending on whether they are discussing radiation coming from a radioactive source, the radiation dose absorbed by a person, or the risk that a person will suffer health effects (biological risk) from exposure to radiation. Most scientists measure radiation using the System Internationale (SI), a uniform system of weights and measures that evolved from the metric system. In the United States, however, the conventional system of measurement is still widely used. Different units of measure are used depending on what aspect of radiation is being measured. For example, the amount of radiation being given off, or emitted, by a radioactive material is measured using the conventional unit curie (Ci), named for the famed scientist Marie Curie, or the SI unit becquerel (Bq). The radiation dose absorbed by a person (that is, the amount of energy deposited in human tissue by radiation) is measured using the conventional unit rad or the SI unit gray (Gy). The biological risk of exposure to radiation is measured using the conventional unit rem or the SI unit sievert (Sv). For current information on measuring radiation, go to: http://www.bt.cdc.gov/radiation/measurement.asp . This was clipped from the 1963 film, About Fallout, from the U.S. Department of Defense, Office of Civil Defense. The entire film is available at the Internet Archives.

Category:

Education

Tags:

• Radiation
• dosimeter
• GM
• Meter
• hazwoper
• OSHA
• NIOSH
• EPA
• DOE
• dose
• industrial
• hygiene
• monitoring

[panzarw]

I love those old science explanation videos!

[Pujc]

In what time was that recorded 1970 or around?