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Kohl, Helmut

(Encyclopedia)Kohl, Helmut (Helmut Josef Michael Kohl) hĕlˈmo͝otˌ yōˈzĕfˌ mĭkhˈäĕl kōl [key], 1930–2017, German statesman, chancellor of West Germany (1982–1990) and reunified Germany (1990–98). ...

Heisenberg, Werner

(Encyclopedia)Heisenberg, Werner vĕrˈnər hīˈzənbĕrk [key], 1901–76, German physicist. One of the founders of the quantum theory, he is best known for his uncertainty principle, or indeterminacy principle, ...

Chartism

(Encyclopedia)Chartism, workingmen's political reform movement in Great Britain, 1838–48. It derived its name from the People's Charter, a document published in May, 1838, that called for voting by ballot, univer...

motor, electric

(Encyclopedia)CE5 Motor: In the AC motor, current fed to the conducting loop of wire causes it to rotate in the magnetic field, thus turning the shaft on which the loop is mounted. In the DC motor, the direction...

condensate

(Encyclopedia)condensate, matter in the form of a gas of atoms, molecules, or elementary particles that have been so chilled that their motion is virtually halted and as a consequence they lose their separate ident...

pendulum

(Encyclopedia)pendulum, a mass, called a bob, suspended from a fixed point so that it can swing in an arc determined by its momentum and the force of gravity. The length of a pendulum is the distance from the point...

Populist party

(Encyclopedia)Populist party, in U.S. history, political party formed primarily to express the agrarian protest of the late 19th cent. In some states the party was known as the People's party. In 1896, while th...

parlement

(Encyclopedia)parlement pärˈləmənt, Fr. pärləmäNˈ [key], in French history, the chief judicial body under the ancien régime. The parlement consisted of a number of separate chambers: the central pleading c...

neutrino

(Encyclopedia)neutrino no͞otrēˈnō [key] [Ital.,=little neutral (particle)], elementary particle with no electric charge and a very small mass emitted during the decay of certain other particles. The neutrino wa...

atom

(Encyclopedia)CE5 Bohr-Rutherford atom CE5 Probability distribution of the electron in the hydrogen atom: A. Ground state B. Highly excited state atom [Gr.,=uncuttable (indivisible)], basic unit of matte...

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