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subtreasury

(Encyclopedia)subtreasury. After President Andrew Jackson vetoed (July 10, 1832) the bill to recharter the Second Bank of the United States, the deposits were removed and placed in state banks that came to be calle...

zero

(Encyclopedia)zero, that number which, when added to any number, leaves the latter unchanged; its symbol is 0. The introduction of zero into the decimal system was the most significant achievement in the developmen...

neuron

(Encyclopedia)neuron, specialized cell in animals that, as a unit of the nervous system, carries information by receiving and transmitting electrical impulses. ...

Reed College

(Encyclopedia)Reed College, at Portland, Oreg.; coeducational; inc. 1908, opened 1911 through a bequest from Mr. and Mrs. Simeon G. Reed. Reed is noted for its program of natural sciences and for its system of tuto...

Gabelsberger, Franz Xaver

(Encyclopedia)Gabelsberger, Franz Xaver fränts ksävĕrˈ gäˈbəlsbĕrˌgər [key], 1780–1849, German stenographer. He invented a popular German shorthand system. ...

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 ...

civil law

(Encyclopedia)civil law, as used in this article, a modern legal system based upon Roman law, as distinguished from common law. Civil law is based on written legal codes, a hallmark of the Roman legal system, in wh...

Lippe, river, Germany

(Encyclopedia)Lippe, river, c.150 mi (240 km) long, rising in the Teutoburg Forest, W Germany and flowing westward into the Rhine River. It is canalized to permit barge navigation. Water from the Lippe is used in t...

Nelson, Leonard

(Encyclopedia)Nelson, Leonard, 1882–1927, German philosopher. On the faculty of the Univ. of Göttingen from 1909, he was interested in the use of critical method to establish a scientific foundation for philosop...

Lobachevsky, Nikolai Ivanovich

(Encyclopedia)Lobachevsky, Nikolai Ivanovich nyĭkəlīˈ ēväˈnəvĭch ləbəchĕfˈskē [key], 1793–1856, Russian mathematician. A pioneer in non-Euclidean geometry, he challenged Euclid's fifth postulate tha...