Rheumatoid arthritis (RA) is the second most common type of arthritis, affecting around 1.5 million Americans. A systemic autoimmune disease, it mainly attacks the synovial joints: the hands and wrists, shoulders, elbows, knees, ankles, feet, and toes.
Beta radiation, consisting of electrons or positrons, is halted by an aluminum plate. Gamma radiation is damped by lead. Beta particles are high-energy, high-speed electrons or positrons emitted by certain types of radioactive nuclei, such as potassium-40. The beta particles emitted are a form of ionizing radiation also known as beta rays. The production of beta particles is termed beta decay. They are designated by the Greek letter beta (Î²). There are two forms of beta decay, Î² â and Î² + , which respectively give rise to the electron and the positron.
Confidence votes 77.8K. Beta decay is a type of radioactive decay. It comes in two flavors or types, and they are beta plus decay and beta minus decay. The weak interaction (or weak force, or weak nuclear force) mediates this type of decay, and it allows for a change in the nucleus of an atom.Let's look at the two types.n beta minus decay, a neutron in an atom's nucleus will be converted into a proton. This happens when one of the down quarks which make up the neutron is converted into an up quark.