Pierre and Marie Curie are best known for their pioneering work in the study of radioactivity, which led to their discovery in 1898 of the elements radium and polonium.
1 The beam of your boat is the width at the widest part of the boat.  To measure the beam, stand inside the boat and run a measuring tape from the port (left) side to the starboard (right) side at the widest section of your boat.
Definition of beam. 1  transitive verb. 2  1 : to emit in beams or as a beam (see 1beam 2) The sun beamed its light through the window. 3  2 : to support with beams (see 1beam 1) The house was beamed with heavy timbers.