Columbia Encyclopedia

(Encyclopedia) Strawberry valley project, N central Utah, developed by the U.S. Bureau of Reclamation for irrigating lands S of Utah Lake; constructed 1906–13. The water of Strawberry River and its tributaries is ...

(Encyclopedia) Indus valley civilization, ancient civilization that arose about 3300 b.c. in the valley of the Indus River and its tributaries, in the northwestern portion of the Indian subcontinent, i.e., present-d...

(Encyclopedia) microelectronics, branch of electronic technology devoted to the design and development of extremely small electronic devices that consume very little electric power. Although the term is sometimes us...

(Encyclopedia) Si, symbol for the element silicon. ...

(Encyclopedia) Packard, David, 1912–96, American business executive, b. Pueblo, Colo., grad. Stanford (B.A., 1934; M.S., 1939). He and classmate William R. Hewlett opened a garage-based business, which became (193...

(Encyclopedia) Rift Valley fever, acute viral disease that affects domestic livestock and can be transmitted to humans. The disease is most common in E and S Africa, but also occurs widely in sub-Saharan Africa and ...

(Encyclopedia) carbide, any one of a group of compounds that contain carbon and one other element that is either a metal, boron, or silicon. Generally, a carbide is prepared by heating a metal, metal oxide, or metal...

(Encyclopedia) Valley of Ten Thousand Smokes: see Katmai National Park and Preserve. ...

(Encyclopedia) Ten Thousand Smokes, Valley of: see Katmai National Park and Preserve. ...

(Encyclopedia) Hewlett, William Redington hyo͞oˈlĭt [key], 1913–2001, American engineer and business executive, b. Ann Arbor, Mich., grad. Stanford (B.S. 1934, Engineer 1939), Massachusetts Institute of Technol...