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thulium

(Encyclopedia)thulium tho͞oˈlēəm [key] [from Thule, an ancient name for Scandinavia], metallic chemical element; symbol Tm; at. no. 69; at. wt. 168.93421; m.p. about 1,545℃; b.p. 1,947℃; sp. gr. 9.3; valenc...

Janus, in Roman religion

(Encyclopedia)Janus jāˈnəs [key], in Roman religion, god of beginnings. He was one of the principal Roman gods, the custodian of the universe. The first hour of the day, the first day of the month, the first mon...

French Revolutionary calendar

(Encyclopedia)French Revolutionary calendar, the official calendar of France, Nov. 24, 1793–Dec. 31, 1805. Its introduction was decreed by the Convention on Oct. 5, 1793, but it was computed from Sept. 22, 1792, ...

Dovzhenko, Aleksandr

(Encyclopedia)Dovzhenko, Aleksandr əlyĭksänˈdər dōvzhĕnˈkō [key], 1894–1956, Soviet film director, b. Ukraine. He ranks with Eisenstein and Pudovkin as one of the greatest Soviet filmmakers. Zvenigord (1...

anomalistic year

(Encyclopedia)anomalistic year ənŏmˌəlĭsˈtĭk [key], time required for the earth to go from the perihelion point once around the sun and back to the perihelion point. It is 365 days, 6 hr, 13 min, 53.0 sec of...

Heinlein, Robert Anson MacDonald

(Encyclopedia)Heinlein, Robert Anson MacDonald hīˈlīn [key], 1907–88, American science-fiction writer, b. Butler, Mo. His best-known novel, Stranger in a Strange Land (1961), concerns a young man who is raised...

Jovian planets

(Encyclopedia)Jovian planets, the planets Jupiter, Saturn, Uranus, and Neptune. They are all larger and more massive than the earth. Since they rotate faster, they are more flattened at the poles than are the terre...

sky

(Encyclopedia)sky, apparent dome over the earth, background of the clouds, sun, moon, and stars. The blue color of the clear daytime sky results from the selective scattering of light rays by the minute particles o...

Frigg

(Encyclopedia)Frigg or Frigga, Norse mother goddess and the wife of Odin (Woden). One of the most important goddesses of Germanic religion, she was queen of the heavens, a deity of love and the household. She was o...

Coué, Émile

(Encyclopedia)Coué, Émile āmēlˈ kwā [key], 1857–1926, French psychotherapist. He is remembered for his formula for curing by optimistic autosuggestion, “Day by day, in every way, I am getting better and b...