Definition/Description. Trapezius Myalgia is chronic pain of the upper trapezius muscle, most frequent is neck pain. It is a complex and multifactorial condition. Musculoskeletal pain is often intensifying by mental and social stress at home or work.
A hadron, in particle physics, is any subatomic (smaller than the atom) particle or antiparticle which is made of quarks. Quarks are fundamental particles which among other properties have an electrical charge and a name (e.g. 'up', 'down', 'strange'). The electrical charge of a single quark is always a fraction (e.g. 2/3).
The Large Hadron Collider has achieved high energy collisions of protons, opening a new era in science. 4:06PM BST 30 Mar 2010. Comments. * Though built to study the smallest known building blocks of all things-known as particles-the LHC is the largest and most complex machine ever made.