How Exercise Helps Knee Arthritis. Exercising an arthritic knee may seem counterintuitive, but regular exercise can actually lessen â and even relieve â arthritis pain and other symptoms, such as stiffness and swelling. There are several reasons to exercise with knee arthritis. For example: 1  Exercise maintains the jointâs full range of motion.
Beta Software. Before a commercial software program is released to the public, it usually goes through a beta phase. During this stage, the software is tested for bugs, crashes, errors, inconsistencies, and any other problems. Though beta versions of software used to be made available only to developers, they are now sometimes made available for the general public to test, usually through the software company's Web site.
A high-speed electron emitted by an atomic nucleus undergoing radioactive decay. A beta particle is created when a neutron becomes a proton. Beta particles have greater speed and penetrating power than alpha particles. â¦ The process by which a neutron becomes a proton and emits an electron is called beta decay. Beta decay results in the atomic number of an element being increased by one and its mass number staying the same. See more at radiation, radioactive decay.