अर्थ : A unit of radioactivity equal to the amount of a radioactive isotope that decays at the rate of 37,000,000,000 disintegrations per second.

अर्थ : French physicist. Husband of Marie Curie (1859-1906).

अर्थ : French chemist (born in Poland) who won two Nobel prizes. One (with her husband and Henri Becquerel) for research on radioactivity and another for her discovery of radium and polonium (1867-1934).