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Brasstown Bald

(Encyclopedia) Brasstown Bald, peak, 4,784 ft (1,458 m) high, N Ga., in the Blue Ridge of the Appalachian Mts., near the N.C. line. It is the highest point in Georgia.

Ellwood City

(Encyclopedia) Ellwood City, industrial borough (2020 pop. 7,166), Beaver and Lawrence counties, W central Pa., near the Ohio line; inc. 1892. It has…

Pearl River

(Encyclopedia) Pearl River, uninc. village (1990 pop. 15,314), Rockland co., SE N.Y., near the N.J. line. It is a residential suburb of New York City, and a computer and telecommunications research…

roller skating

(Encyclopedia) roller skating, gliding on a hard, smooth, durable surface on skates with rollers or wheels, in recent years has become a popular adult sport. Skates mounted on wooden rollers date…

Raman effect

(Encyclopedia) Raman effectRaman effecträˈmən [key], appearance of additional lines in the spectrum of monochromatic light that has been scattered by a transparent material medium. The effect was…

Hirschfeld, Al

(Encyclopedia) Hirschfeld, Al (Albert Hirschfeld)Hirschfeld, Alhûrshˈfĕld [key], 1903–2003, American graphic artist, b. St. Louis. He and his family moved to New York City when he was 12, and he…

John IV, king of Portugal

(Encyclopedia) John IV, 1604–56, king of Portugal (1640–56). He succeeded as duke of Braganza in 1630. Descended from Manuel I and in illegitimate line from John I, he had the strongest claim to the…

parabola

(Encyclopedia) CE5 Parabola parabolaparabolapərăbˈələ [key], plane curve consisting of all points equidistant from a given fixed point (focus) and a given fixed line (directrix) (see illustration…

airmail

(Encyclopedia) airmail, transport of mail by airplanes. Demonstration flights that showed the feasibility of carrying mail by air were made in Great Britain and in the United States in 1911. In the…

Great Dividing Range

(Encyclopedia) Great Dividing Range, crest line of the Eastern Highlands of Australia. For the most part it separates rivers draining into the Pacific Ocean from those flowing into the Indian Ocean…