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Peaks of Otter

(Encyclopedia)Peaks of Otter, Va.: see Otter, Peaks of. ...

Pennsylvania, University of

(Encyclopedia)Pennsylvania, University of, in Philadelphia; private with some state support; coeducational. It dates to 1740 and plans for a charity school, and the first predecessor opened in 1751 as an academy, l...

Pepin of Heristal

(Encyclopedia)Pepin of Heristal (Pepin II) pĕpˈĭn [key], d. 714, mayor of the palace (680–714) of the Frankish territory of Austrasia; grandson of Pepin of Landen and father of Charles Martel. After defeating...

Pepin of Landen

(Encyclopedia)Pepin of Landen (Pepin I), d. 639?, mayor of the palace of the Frankish kingdom of Austrasia. With Arnulf, bishop of Metz, he called in King Clotaire II of Neustria to overthrow (613) Queen Brunhilda ...

Perekop, Isthmus of

(Encyclopedia)Perekop, Isthmus of pĕrĭkôpˈ [key], c.19 mi (30 km) long and from 5 to 14 mi (8–23 km) wide, connecting Crimea with the Ukrainian mainland. The Crimean portion of the isthmus passed to Russian c...

Poissy, Colloquy of

(Encyclopedia)Poissy, Colloquy of pwäsēˈ [key], 1561, conference of Roman Catholic prelates and Protestant ministers, initiated by Catherine de' Medici and Michel de L'Hôpital in the hope of bringing about a pe...

Poland, partitions of

(Encyclopedia)Poland, partitions of. The basic causes leading to the three successive partitions (1772, 1793, 1795) that eliminated Poland from the map were the decay and the internal disunity of Poland and the eme...

polarization of light

(Encyclopedia)polarization of light, orientation of the vibration pattern of light waves in a singular plane. Unpolarized light can be converted into a single polarized beam by means of the Nicol prism, a device ...

Port of Spain

(Encyclopedia)Port of Spain, city (1990 pop. 50,878), capital of Trinidad and Tobago, on the Gulf of Paria. It is the industrial and commercial center of the country. From 1958 to 1962, Port of Spain was the capita...

Portsmouth, Treaty of

(Encyclopedia)Portsmouth, Treaty of, 1905, treaty ending the Russo-Japanese War. It was signed at the Portsmouth Naval Base, New Hampshire, on Sept. 5, 1905. Negotiations leading up to the treaty began in the sprin...