(Encyclopedia) potentiometer. 1 Manually adjustable, variable, electrical resistor. It has a resistance element that is attached to the circuit by three contacts, or terminals. The ends of the…
(Encyclopedia) phenylketonuriaphenylketonuriafĕnˌəlkētˌən&oobreve;rˈēə [key] (PKU), inherited metabolic disorder caused by a deficiency in a specific enzyme (phenylalanine hydroxylase). The…
(Encyclopedia) New Age, a term popularized in the 1980s to describe a wide-ranging set of beliefs and practices that are an outgrowth of the counterculture of the 1960s and 70s in the United States.…
(Encyclopedia) tritiumtritiumtrĭtˈēəm [key], radioactive isotope of hydrogen with mass number 3. The tritium nucleus, called a triton, contains one proton and two neutrons. It has a half-life of 12.5…
(Encyclopedia) Raman effectRaman effecträˈmən [key], appearance of additional lines in the spectrum of monochromatic light that has been scattered by a transparent material medium. The effect was…
(Encyclopedia) robbery, in law, felonious taking of property from a person against his will by threatening or committing force or violence. The injury or threat may be directed against the person…
(Encyclopedia) Austin, John, 1790–1859, English jurist. He served (1826–32) as professor of jurisprudence at the Univ. of London, and his lectures were published (with additional material) as The…
(Encyclopedia) Vazov, IvanVazov, Ivanĭvänˈ väˈzôf [key], 1850–1921, Bulgarian poet, novelist, and playwright, the first professional man of letters in Bulgaria. His work was inspired by the political…
(Encyclopedia) wind shear, a sudden, drastic change in wind direction or speed over a comparatively short distance. Most winds travel horizontally, as does most wind shear, but under certain…
