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Argonne National Laboratory

(Encyclopedia)Argonne National Laboratory, research center, based in Argonne, Ill., 27 mi (43 km) SW of downtown Chicago, with other facilities at the Idaho National Engineering Laboratory, 50 mi (80 km) W of Idaho...

Brus, Louis

(Encyclopedia)Louis Brus, 1943– , b. Cleveland, Ohio, American chemist, studied at Rice University (B.S., 1965) and Columbia University (Ph.D., 1969). He is Samuel ...

Lenz's law

(Encyclopedia)Lenz's law, physical law, discovered by the German scientist H. F. E. Lenz in 1834, that states that the electromotive force (emf) induced in a conductor moving perpendicular to a magnetic field tends...

Ekimov, Alexei

(Encyclopedia)Alexei Ekimov, 1945– , b. Leningrad, USSR, Russian physicist, studied at Leningrad State University and Ioffe Institute of the Russian Academy of Scie...

power, in physics

(Encyclopedia)power, in physics, time rate of doing work or of producing or expending energy. The unit of power based on the English units of measurement is the horsepower, devised for describing mechanical power b...

Carloman, 751–71, son of Pepin the Short and brother of Charlemagne

(Encyclopedia)Carloman, 751–71, son of Pepin the Short. He and his brother, Charlemagne, shared the succession to their father's kingdom; Carloman ruled the southern portion. Attempts to end rivalry between the b...

power, electric

(Encyclopedia)power, electric, energy dissipated in an electrical or electronic circuit or device per unit of time. The electrical energy supplied by a current to an appliance enables it to do work or provide some ...

Epsom and Ewell

(Encyclopedia)Epsom and Ewell yo͞oˈəl [key], borough and district, Surrey, SE England. Epsom salts were first ...

Tyne and Wear

(Encyclopedia)Tyne and Wear, former metropolitan county, NE England. Created in the 1974 local government reorganization, the county embraced the Newcastle upon Tyne conurbation and comprised five metropolitan dist...

Hinckley and Bosworth

(Encyclopedia)Hinckley and Bosworth, district, Leicestershire, central England. Hosiery and shoes are the chief manufactures. Other industries are dyeing and engineer...