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symbol for the element calciumcalcium
[Lat.,=lime], metallic chemical element; symbol Ca; at. no. 20; at. wt. 40.078; m.p. about 839°C;; b.p. 1,484°C;; sp. gr. 1.55 at 20°C;; valence +2. Calcium is a malleable, ductile, silver-white, relatively soft metal with face-centered, cubic crystalline
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California State Information

Phone: (916) 657-9900

Area (sq mi):: 163695.57 (land 155959.34; water 7736.23) Population per square mile: 231.70
Population 2005: 36,132,147 State rank: 0 Population change: 2000-20005 6.70%; 1990-2000 13.80% Population 2000: 33,871,648 (White 46.70%; Black or African American 6.70%; Hispanic or Latino 32.40%; Asian 10.90%; Other 22.80%). Foreign born: 26.20%. Median age: 33.30
Income 2000: per capita $22,711; median household $47,493; Population below poverty level: 14.20% Personal per capita income (2000-2003): $32,464-$33,415
Unemployment (2004): 6.20% Unemployment change (from 2000): 1.30% Median travel time to work: 27.70 minutes Working outside county of residence: 17.10%

List of California counties:

  • Alameda County
  • Alpine County
  • Amador County
  • Butte County
  • Calaveras County
  • Colusa County
  • Contra Costa County
  • Del Norte County
  • El Dorado County
  • Fresno County
  • Glenn County
  • Humboldt County
  • Imperial County
  • Inyo County
  • Kern County
  • Kings County
  • Lake County
  • Lassen County
  • Los Angeles County
  • Madera County
  • Marin County
  • Mariposa County
  • Mendocino County
  • Merced County
  • Modoc County
  • Mono County
  • Monterey County
  • Napa County
  • Nevada County
  • Orange County
  • Placer County
  • Plumas County
  • Riverside County
  • Sacramento County
  • San Benito County
  • San Bernardino County
  • San Diego County
  • San Francisco City & County
  • San Joaquin County
  • San Luis Obispo County
  • San Mateo County
  • Santa Barbara County
  • Santa Clara County
  • Santa Cruz County
  • Shasta County
  • Sierra County
  • Siskiyou County
  • Solano County
  • Sonoma County
  • Stanislaus County
  • Sutter County
  • Tehama County
  • Trinity County
  • Tulare County
  • Tuolumne County
  • Ventura County
  • Yolo County
  • Yuba County
  • California Parks



    (also, Song Ha), a river in the Democratic Republic of Viet-nam (DRV), originating in Laos. Length, approximately 500km. In its upper reaches, it cuts through spurs of the TruongSon, crosses a maritime plain, and then flows into the Gulf of BacBo (Tonkin) of the South China Sea. The water level is at itshighest during the summer. In its lower course, its waters areused for irrigation. The city of Vinh (DRV) is situated on theriver.






    (theory, architecture)






    The country code for Canada.


    (1) (Certification Authority or Certificate Authority) An organization that issues digital certificates (digital IDs) and makes its public key widely available to its intended audience. See digital certificate and cryptography.

    (2) See CA Technologies.

    (3) (Continuous Availability) See fault tolerant.

    (4) (.CA) The country code for Canada. See country code.
    References in periodicals archive ?
    Greg Eubanks, Vice President of Hospitality Sales & Marketing for Standard Textile sees housekeepers also benefiting from the Circa design.
    centra-se no estudo do manuscrito editado, o seu conteudo (as caracteristicas da lingua, o estilo, o lexico tecnico), relacao entre o texto editado e outros textos elaborados a partir do Circa instans.
    Circa Telecom, based in Tampa since 1990, is a subsidiary of Circa Enterprises, Inc.
    Circa Survive hits the Warped Tour toting a solid new album "On Letting Go.
    Among the most notable artifacts is the last remaining slab of the Rosetta Stone, circa 196 B.
    Beauvais Royal Manufactory, woven circa 1690 under the supervision of Philipe Behagle.
    Four appendices present alphabetical and chronological lists of English treatises between circa 1592 and circa 1728, a list of editions of the most famous and often reprinted one (Playford's Introduction to the Skill of Musick, which went through nineteen editions between 1654 and 1730), and the origin of included material for an era in which scholars routinely practiced what we would now consider plagiarism.
    com and Circa Publishing are the only places in the world where you can view and buy rarely seen, historically important art that has previously only been available to select scholars and theologians," said Randall Green, founder/managing director of Circa Publishing, parent company of Vedo.
    Circa has introduced its next generation HDSL enclosure at the Bell South Symposium in Columbia S.
    MobiStream is architected to support multi-slot Class 12 (maximum 4Rx, 1Tx), circa 56kbps with a simple software upgrade to 8 slots/circa 115kbps as networks increase data capacity.
    Peak rental levels in the city centre remain at circa pounds 23/sq ft, compared with pounds 20 in Solihull and pounds 12.