Power factor

The power factor of an AC electric power system is defined as the ratio of the real power flowing to the load to the apparent power , and is a number between 0 and 1 (frequently expressed as a percentage, e.g. 0.5 pf = 50% pf). Real power is the capacity of the circuit for performing work in a particular time. Apparent power is the product of the current and voltage of the circuit. Due to energy stored in the load and returned to the source, or due to a non-linear load that distorts the wave shape of the current drawn from the source, the apparent power can be greater than the real power.

In an electric power system, a load with low power factor draws more current than a load with a high power factor for the same amount of useful power transferred. The higher currents increase the energy lost in the distribution system, and require larger wires and other equipment. Because of the costs of larger equipment and wasted energy, electrical utilities will usually charge a higher cost to industrial or commercial customers where there is a low power factor.

IEEE Computer Society

IEEE Computer Society is an organizational unit of the Institute of Electrical and Electronics Engineers (IEEE). It was established in 1963 when the American Institute of Electrical Engineers (AIEE) and the Institute of Radio Engineers (IRE) merged to create the IEEE.

At the time of the merger, the AIEE’s Subcommittee on Large-Scale Computing (established 1946) merged with the IRE’s Technical Committee on Electronic Computers (established 1948) to create the IEEE Computer Group. The group became the IEEE Computer Society in 1971.

IEEE Edison Medal

The Edison Medal is presented by the Institute of Electrical and Electronics Engineers (IEEE) "for a career of meritorious achievement in electrical science, electrical engineering or the electrical arts." It is the oldest and most coveted medal in this field of engineering in the United States.[1] The award consists of a gold medal, bronze replica, small gold replica, certificate and honorarium.

The Edison Medal, named after the inventor and entrepreneur Thomas Edison, was created on 11 February 1904 by a group of Edison's friends and associates. Four years later the American Institute of Electrical Engineers (AIEE) entered into an agreement with the group to present the medal as its highest award. The first medal was presented in 1909 to Elihu Thomson. Other recipients of the Edison Medal include George Westinghouse, Alexander Graham Bell, Nikola Tesla, Michael I. Pupin, Robert A. Millikan (Nobel Prize 1923), and Vannevar Bush. A complete list can be found here.

After the merger of AIEE and the Institute of Radio Engineers (IRE), in 1963, to form the IEEE, it was decided that IRE's Medal of Honor would be presented as IEEE's highest award, while the Edison Medal would become