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Itzamna

(Encyclopedia)Itzamna ētsämˈnä [key], chief deity of the Maya. Son of Hunab Ku, the creator, he was believed to be lord of the heavens, day, and night. Thought by the Maya to have been the inventor of writing a...

Marvin, Charles Frederick

(Encyclopedia)Marvin, Charles Frederick, 1858–1943, American meteorologist, b. Putnam (now part of Zanesville), Ohio, grad. Ohio State Univ., 1883. He entered (1884) the U.S. Signal Service, predecessor of the We...

Albert, prince consort of Victoria of Great Britain

(Encyclopedia)Albert, 1819–61, prince consort of Victoria of Great Britain, whom he married in 1840. He was of Wettin lineage, the son of Ernest I, duke of Saxe-Coburg-Gotha, and first cousin to Victoria. As an a...

Sacrobosco, Johannes de

(Encyclopedia)Sacrobosco, Johannes de yōhänˈəs də săkrōbŏsˈkō [key], or John of Hollywood, c.1200–1256, English mathematician and astronomer. He wrote several widely read and influential books: Algorism...

Colossus of Rhodes

(Encyclopedia)Colossus of Rhodes kəlŏsˈəs [key], large statue of Helios, the sun god, destroyed by an earthquake in antiquity. Consider one of the Seven Wonders of the World by the ancients, it was built in par...

transmutation of elements

(Encyclopedia)transmutation of elements, conversion of one chemical element into another. The expression has both historical and contemporary significance. The transmutation of certain metals into gold by means of ...

April Fool's Day

(Encyclopedia)April Fool's Day or All Fool's Day, holiday of uncertain origin, known for practical joking and celebrated on the first of April. Prior to the adoption of the Gregorian calendar in 1564, the date was ...

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