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.
Beam is a horizontal structure member used to carry vertical load, shear load and sometime horizontal load. It is the major component of building structures. It mainly use in construction of bridges, trusses, and other structures which carry vertical load. Types of beams: Beams are classified as follow.