PITTSBURGH (KDKA) â The Pittsburgh Steelers and the city-county Sports & Exhibition Authority have reached an agreement to add 3,000 seats to Heinz Field. The Steelers say the seats will be added to the South Plaza for the 2015 season.
The beta particle is a form of ionizing radiation related to other common forms of radiation, alpha particles and gamma rays.The beta particle is a high-speed electron or positron released from a degenerating radioactive nucleus.Being medium-energy and low mass, beta particles are one of the least damaging forms of radiation, but still a very significant health concern.he beta particle is a high-speed electron or positron released from a degenerating radioactive nucleus. Being medium-energy and low mass, beta particles are one of the least damaging forms of radiation, but still a very significant health concern.
Quarks make up many different particles, so the hadrons are classified in two groups; those made from two quarks are called mesons, while particles made up from three quarks are called baryons. protons are made from two up quarks + one down quark; neutrons contain two down quarks + one up quark; so protons and neutrons are baryons.