Becquerel: Difference between revisions
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<onlyinclude>The '''becquerel''' or Bq is the [[SI]] [[units|unit]] for [[radioactive decay]] | <onlyinclude>The '''becquerel''' or Bq is the [[SI]] [[units|unit]] for [[radioactive decay]]. It measures the activity of a substance, and is defined as one [[nucleus]] decaying per second (units of s<sup>-1</sup>).</onlyinclude><ref>Bureau International des Poids et Mesures, "Coherent derived units in the SI with special names and symbols" [Online], Available: http://www.bipm.org/en/publications/si-brochure/table3.html#becquerel</ref> The becquerel is named after French physicist [http://www.nobelprize.org/nobel_prizes/physics/laureates/1903/becquerel-facts.html Henri Becquerel],<ref>Bureau International des Poids et Mesures, "A. H. Becquerel (1852-1908)" [Online], Available: http://www.bipm.org/en/measurement-units/history-si/radioactivity/becquerel.html</ref> who is known for his work with [[radiant energy|light]], and shared the Nobel prize in 1903 with Pierre and Marie Curie for the discovery of natural radiation.<ref>Nobelprize.org The Official Website of the Nobel Prize, "The Nobel Prize in Physics 1903" [Online], Available: http://www.nobelprize.org/nobel_prizes/physics/laureates/1903/index.html</ref> | ||
The ability to measure the activity of a substance | The ability to measure the activity of a substance has many practical applications. For example, measuring the activity of a substance can allow you to determine the [[half life]] of a sample. One useful application involving half-life is radioactive dating, which is used to determine the ages of [[rock]]s and other materials, which is how the [[time scale of the universe|age of the Earth]] is determined.<ref>The TalkOrigins Archive, "The Age of the Earth" [Online], Available: http://www.talkorigins.org/faqs/faq-age-of-earth.html</ref> | ||
The becquerel is a very small unit of activity | The becquerel is a very small unit of activity, so for practical reasons it is commonly [[prefixes|prefixed]] as kilobecquerels (10<sup>3</sup> Bq), megabecquerels (10<sup>6</sup> Bq), gigabecquerels (10<sup>9</sup> Bq), or even terabecquerels (10<sup>12</sup> Bq). | ||
==Becquerel Unit Converter== | ==Becquerel Unit Converter== | ||
Revision as of 22:59, 22 May 2026
The becquerel or Bq is the SI unit for radioactive decay. It measures the activity of a substance, and is defined as one nucleus decaying per second (units of s-1).[1] The becquerel is named after French physicist Henri Becquerel,[2] who is known for his work with light, and shared the Nobel prize in 1903 with Pierre and Marie Curie for the discovery of natural radiation.[3]
The ability to measure the activity of a substance has many practical applications. For example, measuring the activity of a substance can allow you to determine the half life of a sample. One useful application involving half-life is radioactive dating, which is used to determine the ages of rocks and other materials, which is how the age of the Earth is determined.[4]
The becquerel is a very small unit of activity, so for practical reasons it is commonly prefixed as kilobecquerels (103 Bq), megabecquerels (106 Bq), gigabecquerels (109 Bq), or even terabecquerels (1012 Bq).
Becquerel Unit Converter
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References
- ↑ Bureau International des Poids et Mesures, "Coherent derived units in the SI with special names and symbols" [Online], Available: http://www.bipm.org/en/publications/si-brochure/table3.html#becquerel
- ↑ Bureau International des Poids et Mesures, "A. H. Becquerel (1852-1908)" [Online], Available: http://www.bipm.org/en/measurement-units/history-si/radioactivity/becquerel.html
- ↑ Nobelprize.org The Official Website of the Nobel Prize, "The Nobel Prize in Physics 1903" [Online], Available: http://www.nobelprize.org/nobel_prizes/physics/laureates/1903/index.html
- ↑ The TalkOrigins Archive, "The Age of the Earth" [Online], Available: http://www.talkorigins.org/faqs/faq-age-of-earth.html