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Five Dynasties and Ten Kingdoms

(Encyclopedia)Five Dynasties and Ten Kingdoms, period of Chinese history between the fall of the T'ang dynasty (a.d. 907) and the establishment of the Sung dynasty (a.d. 960). It is named for the five successive sh...

Six Dynasties

(Encyclopedia)Six Dynasties, period of Chinese history between the fall of the Han dynasty (a.d. 220) and the unification of China under the Sui dynasty (a.d. 589). It is named for the six successive dynasties that...

porcelain

(Encyclopedia)porcelain [Ital. porcellana], white, hard, permanent, nonporous pottery having translucence which is resonant when struck. Porcelain was first made by the Chinese to withstand the great heat generated...

adolescence

(Encyclopedia)adolescence, time of life from onset of puberty to full adulthood. The exact period of adolescence, which varies from person to person, falls approximately between the ages 12 and 20 and encompasses b...

dog days

(Encyclopedia)dog days, name for the most sultry period of summer, from about July 3 to Aug. 11. Named in early times by observers in countries bordering the Mediterranean, the period was reckoned as extending from...

Atlas, in astronomy

(Encyclopedia)Atlas, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XV (or S15), Atlas is a small, irregularly shaped (nonspherical) body measuring about 25 mi (40 km) ...

Kish, ancient city, Mesopotamia

(Encyclopedia)Kish kĭsh [key], ancient city of Mesopotamia, in the Euphrates valley, 8 mi (12.9 km) E of Babylon and 12 mi (19 km) east of the modern city of Hillah, Iraq. It was occupied from very ancient times, ...

Cepheid variables

(Encyclopedia)Cepheid variables sēˈfēĭd [key], class of variable stars that brighten and dim in an extremely regular fashion. The periods of the fluctuations (the time to complete one cycle from bright to dim a...

Pan, in astronomy

(Encyclopedia)Pan, in astronomy, one of the named moons, or natural satellites, of Saturn. Also known as Saturn XVIII (or S18), Pan is 12.5 mi (20 km) in diameter, orbits Saturn at a mean distance of 83,000 mi (133...

Regency

(Encyclopedia)Regency, in British history, the period of the last nine years (1811–20) of the reign of George III, when the king's insanity had rendered him unfit to rule and the government was vested in the prin...