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spectrum
spectrum
spectrum Arrangement of
electromagnetic radiations ordered by wavelength or frequency. The visible light spectrum is a series of colours: red, orange, yellow, green, blue, indigo, and violet. Each colour corresponds to a different wavelength of light. This was first noted in 1666 by English physicist Isaac
Newton. A spectrum is seen in a
rainbow or when white light passes through a
prism. This effect, also seen when visible light passes through a
diffraction grating, produces a continuous spectrum in which all wavelengths (between certain limits) are present. Spectra formed from objects emitting radiations are called
emission spectra. These occur when a substance is strongly heated or bombarded by electrons. An
absorption spectrum, consisting of dark regions on a bright background, is obtained when white light passes through a semi-transparent medium that absorbs certain frequencies. A line spectrum is one in which only certain wavelengths or ‘lines’ appear. See
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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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 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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Spectra Laboratories Expands West Coast Operations.
Business Wire; 8/21/2007; 700+ words
; ...External Test Market MILPITAS, Calif. -- Spectra Laboratories, Inc., the leading provider...test market. The new facility allows for Spectra Laboratories' customer service staff...also provides a strategic opportunity for Spectra Laboratories to integrate new technology...
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Spectra Logic, Cheyenne Software Announce Complete Backup Solution.
Business Wire; 8/23/1995; 700+ words
; ...BUSINESS WIRE)--Aug. 23, 1995--Spectra Logic of Boulder, Colo., and Cheyenne...announced Cheyenne certification of the Spectra 4000 Series tape libraries for compatibility...Windows, 5.01x. When used concurrently, Spectra Logic's tape libraries and Cheyenne...
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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 and Four Leaf Technologies Sign Distribution Agreement for Scandinavian Market.
Business Wire; 7/16/2007; 700+ words
; Four Leaf to Resell Spectra Libraries, Archive and Backup Servers in the Nordic Market BOULDER, Colo. -- Spectra Logic, the leading innovator in data...agreement. Four Leaf will now offer Spectra Logic tape libraries including the Spectra...
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Spectra Logic Offers Library for Cost of a Single Drive; Spectra 2K AIT-3 Library Poised to Supplant Autoloaders and Standalone Drives.
Business Wire; 6/6/2005; 700+ words
; ...handling and moving tape cartridges. Spectra Logic has created a cost-minimized version of the proven Spectra 2K, offering customers the first true...President of Evergreen Peripherals. "The Spectra 2K with AIT-3 is the first library that...
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Spectra Logic Offers Free Encryption with Key Management.
Business Wire; 10/1/2007; 700+ words
; BlueScale 10 Makes Spectra the Only Vendor with Complete Key Management for LTO-4 BOULDER, Colo. -- Spectra Logic, the innovator in data archive...BlueScale[TM] Encryption for free. Because Spectra's key management operates through the...
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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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