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Hall, James

(Encyclopedia)Hall, James, 1811–98, American geologist and paleontologist, b. Hingham, Mass., grad. Rensselaer School (later Rensselaer Polytechnic Institute), 1832. An authority on stratigraphy and invertebrate ...

hall

(Encyclopedia)hall, a communicating passageway or, in medieval buildings, the large main room. In the feudal castle of N Europe it was a single apartment, and in it lord and retainers lounged, ate, and slept. From ...

Faneuil Hall

(Encyclopedia)Faneuil Hall fănˈəl, fănˈyəl [key], public market and hall in Boston, Mass. Given to the city by the merchant Peter Faneuil in 1742, the building burned in 1761 but was rebuilt. The scene of Rev...

Independence Hall

(Encyclopedia)Independence Hall, historic building on Independence Square, downtown Philadelphia, in Independence National Historical Park. Originally constructed as the Pennsylvania colony's statehouse in 1732, th...

Hall, Joseph

(Encyclopedia)Hall, Joseph, 1574–1656, English prelate and author. He was educated at Emmanuel College, Cambridge, and became bishop of Exeter, 1627–41, and of Norwich, 1641–47. The rise of Puritanism involve...

Hall, Lyman

(Encyclopedia)Hall, Lyman, 1724–90, political leader in the American Revolution, signer of the Declaration of Independence, b. Wallingford, Conn. He was a Congregational minister for some time before practicing m...

Hall, Marshall

(Encyclopedia)Hall, Marshall, 1790–1857, English physician and physiologist, M.D. Univ. of Edinburgh, 1812. He practiced medicine in Nottingham and in London. He opposed bloodletting and devised a method of artif...

Hall, Fort

(Encyclopedia)Hall, Fort: see Fort Hall.

Hall effect

(Encyclopedia)Hall effect, experiment that shows the sign of the charge carriers in a conductor. In 1879 E. H. Hall discovered that when he placed a metal strip carrying a current in a magnetic field, a voltage dif...

Hall, Basil

(Encyclopedia)Hall, Basil, 1788–1844, British naval officer and traveler. In the service from 1802 to 1823, he commanded vessels on scientific assignments and voyages of exploration. He wrote of them in his Accou...