Definition & Betydelse | Engelska ordet BECQUEREL

Definition av BECQUEREL

1. becquerel

Exempel på hur man kan använda BECQUEREL i en mening

• The unit of radioactivity from the System International of units (SI system) is the becquerel (Bq) defined as the radioactive decay or disintegration of one radionuclide per second.
• January 2023 – Western Australian radioactive capsule incident: between 10 January 2023 and 16 January 2023, a radioactive capsule containing a 19 giga becquerel caesium-137 ceramic source went missing from a truck on which it was being transported across Western Australia.
• becquerel (Bq) – the SI unit for the rate of occurrence of aperiodic or stochastic radionuclide events.
• Directive 80/181/EEC, published in December 1979, which replaced directive 71/354/EEC, explicitly catalogued the gray, becquerel, and sievert for this purpose and required that the curie, rad, rem and roentgen be phased out by 31 December 1985.
• By 2018, the IPK underpinned the definitions of four of the seven SI base units: the kilogram itself, plus the mole, ampere, and candela (whose definitions at the time referenced the gram, newton, and watt respectively) as well as the definitions of every named SI derived unit except the hertz, becquerel, degree Celsius, gray, sievert, farad, ohm, siemens, henry, radian and steradian.
• Names had also been suggested (but not used) to honour Henri Becquerel (becquerelium) and Paul Langevin (langevinium).
• These are mostly additions to the list of named derived units, and include the mole (symbol mol) for an amount of substance, the pascal (symbol Pa) for pressure, the siemens (symbol S) for electrical conductance, the becquerel (symbol Bq) for "activity referred to a radionuclide", the gray (symbol Gy) for ionising radiation, the sievert (symbol Sv) as the unit of dose equivalent radiation, and the katal (symbol kat) for catalytic activity.

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