Terrestrial radiation

Terrestrial radiation

The portion of the natural background radiation that is emitted by naturally occurring radioactive materials, such as uranium, thorium, and radon in the earth.

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Part of Speech: noun
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Industry/Domain: Energy
Category: Nuclear energy
Company: U.S. NRC
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Related terms

terrestrial radiation

Energy; Nuclear energy

The portion of the natural background radiation that is emitted by naturally occurring radioactive materials, such as uranium, thorium, and radon in the earth.

terrestrial radiation

Medical devices; Radiology equipment

Radiation emitted by naturally occurring radioactive materials, such as uranium (u), thorium (th), and radon (rn) in the earth.

terrestrial radiation

Weather; Meteorology

Longwave radiation originating by thermal emission from the earth's surface and/or its atmosphere; to be distinguished from solar radiation.

terrestrial radiation

Science; General science

Electromagnetic radiation emitted from the Earth and its atmosphere. Terrestrial radiation, also called thermal infrared radiation or outgoing longwave radiation, is determined by ...

terrestrial radiation

Weather; General weather

Long wave radiation that is emitted by the earth back into the atmosphere. Most of it is absorbed by the water vapor in the atmosphere, while less than ten percent is radiated ...

terrestrial radiation

Physics; Nuclear & particle physics

The portion of natural radiation (background) that is emitted by naturally occurring radioactive materials in the Earth.

alpha particle

Energy; Nuclear energy

A positively charged particle ejected spontaneously from the nuclei of some radioactive elements. It is identical to a helium nucleus that has a mass number of 4 and an ...

attenuation

Energy; Nuclear energy

The process by which the number of particles or photons entering a body of matter is reduced by absorption and scattered radiation.

binding energy

Energy; Nuclear energy

The minimum energy required to separate the nucleus of an atom into its component neutrons and protons.

chain reaction

Energy; Nuclear energy

A reaction that initiates its own repetition. In a fission chain reaction, a fissionable nucleus absorbs a neutron and fissions spontaneously, releasing additional neutrons. ...

condenser

Energy; Nuclear energy

A large heat exchanger designed to cool exhaust steam from a turbine below the boiling point so that it can be returned to the heat source as water. In a pressurized-water ...

annual limit on intake (ALI)

Energy; Nuclear energy

As defined in Title 10, Section 20.1003, of the Code of Federal Regulations (10 CFR 20.1003), ALI is the derived limit for the amount of radioactive material taken into the body ...