noun
becquerel; Bq
SI unit of radioactivity; one becquerel equals one nuclear decay per second. Used in physics and radiation measurement.
この地域の放射線量は毎時0.5ベクレルです。
The radiation level in this area is 0.5 becquerels per hour.
1ベクレルは1秒間に1回の原子核崩壊を表
One becquerel represents one nuclear decay per second.