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Lhasa

(Encyclopedia) Lhasa or LasaLasalä-sŭ [key], city (1994 est. pop. 118,000), capital of Tibet Autonomous Region, SW China. It is on a tributary of the Yarlung Zangbo (Brahmaputra) at an altitude of c.…

Kahn, Louis Isadore

(Encyclopedia) Kahn, Louis IsadoreKahn, Louis Isadoreĭzˈədôrˌ [key]Kahn, Louis Isadore, kän [key], 1901–74, American architect, b. Estonia. He and his family moved to Philadelphia in 1905, and he…

Pei, I. M.

(Encyclopedia) Pei, I. M. (Ieoh Ming Pei)Pei, I. M.pā [key], 1917–2019, Chinese-American architect, b. Guangzhou, China. Pei immigrated to the United States in 1935 and studied at the Univ. of…

Fujita scale

(Encyclopedia) Fujita scaleFujita scalef&oomacr;jēˈtə, f&oomacr;ˈjētə [key] or F-Scale, scale for rating the severity of tornadoes as a measure of the damage they cause, devised in 1951 by…

strength of materials

(Encyclopedia) strength of materials, measurement in engineering of the capacity of metal, wood, concrete, and other materials to withstand stress and strain. Stress is the internal force exerted by…

calcium

(Encyclopedia) calciumcalciumkălˈsēəm [key] [Lat.,=lime], metallic chemical element; symbol Ca; at. no. 20; at. wt. 40.078; m.p. about 839℃; b.p. 1,484℃; sp. gr. 1.55 at 20℃; valence +2. Calcium is a…

What to Look for When Revising

  When editing, make sure to pay careful attention to: Substance | Structure | Interest | Proofreading Substance Substance refers to the content of…

America's Most Endangered Places 2011

The Pillsbury A Mill in Minneapolis, Minn. is among American sites most at risk America's Most Endangered Places America's Most Endangered Places 2010America's Most Endangered Places…

July 2017 Current Events: Disaster News

Top of Page Science & Technology News | US News | World News The world, unfortunately, can be a very dangerous place. Accidents and natural disasters occur regularly and without warning. Please…