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spectrum
spectrum
spectrum 1. A range of electromagnetic energies arranged in order of wavelength or frequency (see
electromagnetic spectrum). The
emission spectrum of a body or substance is the range of radiations it emits when it is heated, is bombarded by electrons or ions, or absorbs photons. The
absorption spectrum of a substance consists of dark lines or bands in a continuous spectrum, each line being a wavelength or group of wavelengths at which light is removed from the continuous spectrum by the absorbing medium. These lines and bands are at the same wavelengths as some of the lines and bands in the substance's emission spectrum. Emission and absorption spectra may show a
continuous spectrum (also called a
continuum), a
line spectrum, or a
band spectrum. A continuous spectrum contains an unbroken sequence of frequencies over a wide range; continuous spectra are produced by incandescent solids, liquids, and compressed gases. Line spectra are discontinuous lines produced by excited atoms and ions as they fall back to a lower energy level. Band spectra (closely grouped bands of lines) are characteristic of molecular gases or chemical compounds.
2. The coloured band produced when visible light is passed through a spectroscope. See also
spectroscopy.
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Spectra Boosts Online Mutual Fund System Performance Quadrupling Throughput, Capacity.
Business Wire; 6/20/2002; 700+ words
; ...TORONTO--(BUSINESS WIRE)--June 20, 2002 Spectra Securities Software Inc. ("Spectra"), a leading provider of wealth management...solutions, today announced a performance release of Spectra Funds. The new release of Spectra's automated...
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Spectra Logic's new 4mm DDS-3 automated tape library doubles data transfer and triples capacity.
Business Wire; 4/8/1997; 700+ words
; ...BUSINESS WIRE)--April 8, 1997--Today Spectra Logic announced the release of the Spectra 5000 family of automated tape libraries. Based on new 4mm DDS-3 tape drives, the Spectra 5000 delivers double the data transfer rate...
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Spectra Logic Launches New Online University Program for Channel Partners.
Newspaper article from: Information Technology Newsweekly; 6/9/2009; 700+ words
; Spectra Logic's channel partners can now attend Spectra University on the Web to pursue sales and technical certification...training from an office, home or anywhere else in the world. Spectra Logic continues to invest in its commitment to channel programs...
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Spectrum Bridge Announces SpecEx(TM), the World's First Online Marketplace for Wireless Spectrum.
Business Wire; 9/8/2008; 700+ words
; ...More Profitable to Buy, Sell and Lease Licensed Spectrum LAKE MARY, Fla. -- Spectrum Bridge, Inc. today announced the launch of SpecEx[TM], the online marketplace for spectrum[TM]. SpecEx will make it simpler and more...
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Spectra Logic Names Andrew Philippou VP of Worldwide Support and Services.
Business Wire; 9/27/2007; 700+ words
; BOULDER, Colo. -- Spectra Logic, the innovator in data archive...services. He is responsible for leading Spectra Logic's support and services department...archive solutions around the globe. As Spectra Logic's VP of worldwide support and...
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Spectra Logic Awarded Government of Canada NMSO Contract in Archival Storage Equipment Category.
Business Wire; 5/8/2007; 700+ words
; ...Departments, Agencies Can Now Purchase Spectra T-Series Products from NMSO Contract TORONTO -- Spectra Logic, the leading innovator in data archive...agencies can acquire a wide variety of Spectra Logic's data backup and archival equipment...
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Spectra Logic Federal Opens Technology Center in Washington DC Beltway.(Company overview)
Business Wire; 2/23/2009; 700+ words
; BOULDER, Colo. -- Spectra Logic Federal, a division of Spectra Logic Corporation, is opening its first technology center...laboratory for customer demonstrations, and meeting space for Spectra Logic Federal sales and engineering staff. Spectra Logic...
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Spectrum Information Technologies Files 10-K; Announces Conclusion of SEC Inquiry Into Conduct of Spectrum
PR Newswire; 6/30/1997; 700+ words
; ...N.Y., June 30 /PRNewswire/ -- Spectrum Information Technologies, Inc. announced...The report includes the effects of Spectrum's implementation of its Chapter 11...reorganization and emergence from bankruptcy. Spectrum also announced that in connection with...
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Spectra Logic Solves Mid-Range Upgradability Challenges with New Transcaleable T-Series Tape Library Line.
Business Wire; 10/17/2007; 700+ words
; Spectra T200, T380, T680 Libraries-The Right Way to Scale DALLAS -- Spectra Logic, the innovator in data archive and backup...expansion to its T-Series tape library line today. Spectra([R]) preserves data storage investments in...
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Spectra T950 Tape Library Now Shipping With Sony SAIT-1 Drives; SLS Partitioning Allows LTO-2, SAIT, SDLT to Run Simultaneously in One Library.
PR Newswire; 10/27/2003; 700+ words
; ...Colo., Oct. 27 /PRNewswire/ -- Spectra Logic is now shipping Sony SAIT-1 half-inch drives in its Spectra T950 tape library. SAIT-1 media delivers...remaining cost-effective for consumers. Spectra Logic customers and VARs can now choose...
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Spectrum
Encyclopedia entry from: UXL Encyclopedia of Science
...Other elements give off more complex line spectra with many lines. Line spectra can take on one of two general forms: emission or absorption spectra. An emission spectrum is the line pattern formed when an element...
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Spectrum Organic Products, Inc.
Book article from: International Directory of Company Histories
Spectrum Organic Products, Inc. 5341 Old Redwood...Public Company Incorporated: 1980 as Spectrum Naturals, Inc. Employees: 59 Sales...Vegetable Canning; 311422 Specialty Canning Spectrum Organic Products, Inc., comprises three...
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spectrum
Book article from: The Columbia Encyclopedia, Sixth Edition
...of particles into a spectrum according to their...Continuous and Line Spectra Dispersion, the separation...visible light into a spectrum, may be accomplished...known as a continuous spectrum. Continuous spectra are produced by all...
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Electromagnetic Spectrum
Book article from: World of Earth Science
Electromagnetic spectrum The electromagnetic spectrum encompasses a continuous range of frequencies or wavelengths...frequency, high-energy gamma rays. The electromagnetic spectrum is traditionally divided into regions of radio waves, microwaves...
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Spectrum Control, Inc.
Book article from: International Directory of Company Histories
Spectrum Control, Inc. 8031 Avonia Road Fairview...Manufacturing Based near Erie, Pennsylvania, Spectrum Control, Inc. designs and manufactures...frequency, or microwave interference. Spectrum's business is organized into three groups...
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