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earth, in chemistry

(Encyclopedia)earth, in chemistry, metallic oxide not readily reducible by chemical means, e.g., alkaline earths, rare earths, and alumina. The name is also applied to certain absorbent clays, e.g., fuller's earth,...

corona, in astronomy

(Encyclopedia)corona, luminous envelope surrounding the sun, outside the chromosphere. Its density is less than one billionth that of the earth's atmosphere. The corona is visible only at the time of totality durin...

phase, in astronomy

(Encyclopedia)CE5 Phases of the moon phase, in astronomy, the measure of how much of the illuminated surface of a planet or satellite can be seen from a point at a distance from that body; the term is most ofte...

Yosai

(Encyclopedia)Yosai (Kikuchi Yosai) kēko͞oˈchē yōˈsī [key], 1788–1878, Japanese painter, known for his depiction of historical subject matter. Although he was well trained in the Chinese and Western painti...

Bonnard, Pierre

(Encyclopedia)Bonnard, Pierre pyĕr bônärdˈ [key], 1867–1947, French painter, lithographer, and illustrator. In the 1890s he was associated with the Nabis. His delight in familiar views of everyday life was tr...

Sesshu

(Encyclopedia)Sesshu sĕsˈsho͞oˌ [key], 1420–1506, foremost Japanese master of ink painting (suiboku) and Zen Buddhist priest, also known as Sesshu Toyo. He may have studied under Shubun in Kyoto. He made a tr...

Squarcione, Francesco

(Encyclopedia)Squarcione, Francesco fränchāˈskō skwärchōˈnā [key], 1397–1468, Italian painter; teacher of Mantegna. According to tradition he was a tailor and embroiderer who turned to painting c.1429 and...

Gérôme, Jean Léon

(Encyclopedia)Gérôme, Jean Léon zhäN lāôNˈ zhārōmˈ [key], 1824–1904, French historical and genre painter. He enjoyed a successful career in his day. He studied with Delaroche and adhered to academic tec...

Tung Ch'i-ch'ang

(Encyclopedia)Tung Ch'i-ch'ang do͞ong chē-chäng [key], 1555–1636, leading painter, calligrapher, connoisseur, and critic of the Ming dynasty. A high official in various public offices, was also regarded as the...

Hui-tsung

(Encyclopedia)Hui-tsung hwē-dzo͞ong [key], 1082–1135, Chinese emperor of the Northern Sung dynasty, painter, and a great patron of art. Politically he was a rather ineffectual ruler, but he was said to have dev...