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Nelson, Willie

(Encyclopedia)Nelson, Willie, 1933–, American country singer, guitarist, and songwriter, b. Abbott, Tex. Nelson began playing professionally at 10 and joined a western swing band as a teenager. In the 1960s he mo...

Lederman, Leon Max

(Encyclopedia)Lederman, Leon Max lĕdˈərmən [key], 1922–2018, American physicist, Ph.D. Columbia, 1951. He was a professor at Columbia until he became director of the Fermi National Accelerator Laboratory in B...

safety lamp

(Encyclopedia)safety lamp, oil lamp designed for safe use in mines and other places where flammable gases such as firedamp (see damp) may be present. Its invention (c.1816) is usually attributed to Sir Humphry Davy...

Osaka

(Encyclopedia)Osaka ōˈsäkä [key], city (1990 pop. 2,623,801), capital of Osaka prefecture, S Honshu, Japan, on Osaka Bay, at the mouth of the Yodo River. One of Japan's largest cities and principal industrial a...

ion, in chemistry

(Encyclopedia)ion, atom or group of atoms having a net electric charge. Ionization has many applications. Vapor lamps and fluorescent lamps take advantage of the light given off when positive ions recombine with ...

brake, in technology

(Encyclopedia)CE5 Shoe brake CE5 Disk brake brake, in technology, device to slow or stop the motion of a mechanism or vehicle. The vacuum brake system, or vacuum brake, depends upon the use of a vacuum to ...

Regulator movement

(Encyclopedia)Regulator movement, designation for two groups, one in South Carolina, the other in North Carolina, that tried to effect governmental changes in the 1760s. In South Carolina, the Regulator movement wa...

Story, Joseph

(Encyclopedia)Story, Joseph, 1779–1845, American jurist, associate justice of the Supreme Court (1811–45), b. Marblehead, Mass. Admitted to the Massachusetts bar in 1801, he practiced law in Salem and was sever...

Presley, Elvis

(Encyclopedia)Presley, Elvis (Elvis Aaron Presley), 1935–77, American popular singer, b. Tupelo, Miss. Exposed to gospel music from childhoo...

Posner, Richard Allen

(Encyclopedia)Posner, Richard Allen pōzˈnər [key], 1939–, American jurist and author, b. New York City, grad. Yale (A.B., 1959), Harvard Law School (LL.B., 1962). He clerked for Supreme Court Justice William B...