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beta radiation

Cultural  
  1. High-energy electrons, carrying a negative charge, that are sent out by some radioactive nuclei. (See alpha radiation and gamma radiation.)


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Beta radiation, unlike alpha radiation, has some penetrating power and can pass through clothing and wooden walls.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

It emits a weak form of beta radiation that does not travel far and cannot penetrate human skin, according to the Nuclear Regulatory Commission.

From Washington Times • Mar. 24, 2023

“What may confuse people is that most of the dose to an individual from eating potassium-40 comes from the beta radiation emitted during the decay of the radioactive atoms,” Chabot wrote.

From Seattle Times • Mar. 17, 2023

It emits a weak form of beta radiation that does not travel very far and cannot penetrate human skin, according to the NRC.

From Seattle Times • Mar. 16, 2023

Such radiation is easy to block; one’s epidermis can block alpha radiation, and a few millimeters of aluminum can block beta radiation.

From Washington Post • Feb. 22, 2019

As a result, beta particles can penetrate far more deeply into bodily tissue and external doses of beta radiation represent a significantly greater threat than the slower, heavier alpha particles.

From Worldwide Effects of Nuclear War: Some Perspectives by U.S. Arms Control and Disarmament Agency

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