Here is what users have to say about Spectrum

useravatar
Entry added by CWAnswers Join us and contribute your knowledge as well.

Select content modules

Rainbow%20above%20Kaviskis%20Lake%2C%20Lithuania.jpg

In most modern usages of spectrum there is a unifying theme between extremes at either end. Some older usages of the word did not have a unifying theme, but they led to modern ones through a sequence of events set out below. Modern usages in mathematics did evolve from a unifying theme, but this may be difficult to recognize.

Help us make CWAnswers better. Be the first one to edit this topic!

Weblinks for spectrum

Top 10 for spectrum

Things about spectrum you find nowhere else.

Comments about this page

We love comments and hate spam too. You can add your comment by clicking on 'open comment input' below.
Show/Hide

Images found for Spectrum

Spectrum_Without_275.jpgnatural-spectrum-usb-light.jpgSpectrum_With_275.jpg
spectrum.jpgspectrum-controller.jpgspectrum_intro.jpg
ZX-Spectrum-Plus-Shock.jpgspectrum-pen-fullsize.jpgspectrum.jpg

Wikipedia about spectrum

Rainbow%20above%20Kaviskis%20Lake%2C%20Lithuania.jpg

In most modern usages of spectrum there is a unifying theme between extremes at either end. Some older usages of the word did not have a unifying theme, but they led to modern ones through a sequence of events set out below. Modern usages in mathematics did evolve from a unifying theme, but this may be difficult to recognize.

Origins

In Latin spectrum means "image" or "apparition", including the meaning "spectre". Spectral evidence is testimony about what was done by spectres of persons not present physically, or hearsay evidence about what ghosts or apparitions of Satan said. It was used to convict a number of persons of witchcraft at Salem, Massachusetts in the late 17th century.

Modern meaning in the physical sciences

K4iii-spectre.png

In the 17th century the word spectrum was introduced into optics, referring to the range of colors observed when white light was dispersed through a prism. Soon the term referred to a plot of light intensity or power as a function of frequency or wavelength, also known as a spectral density.

The term spectrum was soon applied to other waves, such as sound waves, and now applies to any signal that can be decomposed into frequency components. A spectrum is a usually 2-dimensional plot, of a compound signal, depicting the components by another measure. Sometimes, the word spectrum refers to the compound signal itself, such as the "spectrum of visible light", a reference to those electromagnetic waves which are visible to the human eye. Looking at light through a prism separates visible light into its colors according to wavelength. It separates them according to its dispersion relation and a grating separates according to the grating equation and if massive particles are measured often their speed is measured. To get a spectrum, the measured function has to be transformed in their independent variable to frequencies and the dependent variable has to be reduced in regions, where the independent variable is stretched. For this imagine that the spectrum of pulse with a finite number of particles is measured on a film or a CCD. Assuming no particles are lost, any nonlinearity (compared to frequency) on the spectral separation concentrates particles at some points of the film. The same is true for taking a spectrum by scanning a monochromator with a fixed slit width. Violet at one end has the shortest wavelength and red at the other end has the longest wavelength of visible light. The colors in order are violet, blue, green, yellow, orange, red. As the wavelengths get bigger below the red visible light they become infrared, microwave, and radio. As the wavelengths get smaller above violet light, they become ultra-violet, x-ray, and gamma ray.

Search results for Spectrum

Spectrum Brands

Spectrum Brands is a global consumer products company with a diverse portfolio of world-class brands, including Rayovac, Varta and Remington.www.spectrumbrands.com/index.htm

Spectrum Semiconductor Materials

Distributor of ceramic and plastic packages for integrated circuits.www.spectrum-semi.com/

Spectrum Software

Makes Micro-Cap V, a PSpice and SPICE compatible analog and digital simulator for electronic design automation, EDA, and CAE.www.spectrum-soft.com/

Welcome to Spectrum Glass

Manufacturer of products for architecture, kilnforming, and other glassworking arts. ... Stained Glass. Hot Glass. For the Home ...www.spectrumglass.com/

Electromagnetic Spectrum - Introduction

This site is intended for students age 14 and up, and for anyone interested in learning about our universe. ... frequency, and energy regimes of the spectrum ! ...imagine.gsfc.nasa.gov/docs/science/know_l1/emspectrum.html

Images found for Spectrum

spectrum.gifEM-spectrum.jpgspectrum.gif
em_spectrum_berkeley.jpgspectrum.jpgspectrumElectromagnetic.jpg
spectrum.gifEM_Spectrum3-new.jpgChandraSpectrum.jpg

News about Spectrum

Spectrum Input, LLC, Streamlines Financial Planning Tasks with Release of PreciseFP(TM) Digital Client Questionnaire

PRWeb via Yahoo! News Spectrum Input, LLC, announces the release of its flagship product PreciseFP(TM), a non-proprietary data-gathering tool for financial planners and investment advisors that uses industry-standard communication methods (e.g. XML, PDF) to collect, process, and store client data in a secure and efficient mannerhttp://news.yahoo.com/s/prweb/20080903/bs_prweb/prweb1277834...

David Sabino: Secrets of the Twins success

Sports IllustratedIn this Week's Diamond Digits you'll find a main reason why the Twins are hanging in the race, an Angels rookie finally living up to his potential, two Phillies on opposite sides of the Spectrum and the possible farewell to a famous second fiddle.http://sportsillustrated.cnn.com/2008/writers/david_sabino/0...

Wi-Spy 2.4x Spectrum Analyzer

PhysOrgThis all new version has both its hardware and software upgraded. The Wi-Spy is the world's smallest 2.4 GHz spectrum analyzer that helps troubleshoot and analyze Wi-Fi networks for interference.http://www.physorg.com/news139578711.html

Ed Moran: Too bad Lindros will miss Spectrum farewell game

Philly.comSO ERIC LINDROS has a "previous commitment" and can't make an appearance at the Wachovia Spectrum with the 14 other former Flyers captains for the Sept. 27 preseason game with Carolina. I can't say I'm surprised, but I can say I'm disappointed.http://www.philly.com/philly/sports/flyers/20080902_Ed_Moran...

AP, Which Threw Cold Water on Obama Address, Calls Palin Speech 'Star-Turning'

Editor & PublisherNEW YORK An Associated Press analysis of Barack Obama's widely praised (across the political spectrum) speech last Thursday drew much criticism from liberals and media critics last week for its dour tone.http://editorandpublisher.com/eandp/news/article_display.jsp...

News about Spectrum

Mobile industry split over UMA versus femtocells

Computerworld AustraliaManaging the spectrum for femtocells in dense areas is a huge challenge, according to Orange, which says it has done some experimentation. "You must dedicate a frequency to the femtocells. In 2G it's easy, because you have a large number of carriers ... http://www.computerworld.com.au/index.php/id;779843225;fp;16...

Russian 2009 Growth May Slow Below 5.5%, Kudrin Says (Update1)

BloombergIt will probably take months to ``finalize the whole spectrum of measures'' aimed at resolving the crisis, he said. Russia also calls for the International Monetary Fund to play a bigger role in solving the crisis, Kudrin said. IMF Role ... http://www.bloomberg.com/apps/news?pid=20601095&sid=aL8LVsRR...

Popular autism treatment often goes uncovered

Seattle TimesShe's leading an effort in Washington state for legislation to mandate insurance coverage for autism and related disorders, known as autism spectrum disorders (ASDs). "We have a huge task on our hands to educate Washington that autism is treatable ... http://seattletimes.nwsource.com/html/localnews/2008258983_a...

Feeling the burn

Minneapolis Star TribuneThere are strong feelings on both ends of the spectrum, said Rossbach, and he doesn't know whether the group will reach a consensus. "If it turns out that only a few in the city have real problems, does that mean that we should do something to give ... http://www.startribune.com/local/30870774.html?elr=KArksLckD...

This week's letters and blog pingbacks in full

Guardian UnlimitedAt the end of the day, it is the non-expert computer user who sits on the horns of these dilemmas and I do not think that they are best served by extreme views from either end of the hype-luddite spectrum! Ian Osborne, Project Director, Intellect ... http://www.guardian.co.uk/technology/blog/2008/oct/12/intern...

Search results for Spectrum

Spectrum

Join us this weekend as we proudly Grand Open Spectrum! Come tour our furnished model and discover a vibrant new condominium, with everything you want in life right at your ... http://www.spectrumcondo.com/

SPECTRUM

Carries out political researches on foreign and domestic policies. Offers articles, the publication "Spectrum", and information on projects and partners.http://www.spectrum.am/

Spectrum Chemicals & Laboratory Products

A customer-focused manufacturer and distributor of high quality chemicals, safety products and lab equipment for the laboratory and manufacturing facility.http://www.spectrumchemical.com/

Spectrum 8 Theatres

Spectrum 7 Theatres is a locally owned, independent movie theater in Albany, New York, committed to showing the best first-run independent, foreign and Hollywood filmshttp://www.spectrum8.com/

Spectrum

Spectrum provides a full range of innovative high quality products to the Ad Specialty Industry.http://spectrumpromo.net/
  • Recent
  • Mine
  • Watched
  • Commented
You must be logged in to perform this operation
You must be logged in to perform this operation

Search this site

Videos found for Spectrum

Spectrum Interview Part 5 - video

Spectrum Interview Part 5 - videoThe current state of the music industry and their current live show and the times they don?t play ?I?ll Be Gone? at live performances.Video - Video

Spectrum Interview Part 1 - video

Spectrum Interview Part 1 - videoRe-releasing the ?Milesago? album and the bands they played in before Spectrum.Windows Media - Video

Full Spectrum Warrior Product Revie...

Full Spectrum Warrior Product Reviews & Consumer Reports in VideoFull Spectrum Warrior is the ultimate war simulation. Break away from the usual tactical shooter games, and get on the ground with actual U.S. Army weapons and tactics. Based on...Flash - Video

Deutsches Technikmuseum und Science...

Deutsches Technikmuseum und Science Center Spectrum BerlinEntdeckungsreise durch die Kulturgeschichte der Verkehrs-, Kommunikations-, Produktions und Energietechniken auf 25 000 qm: 14 Ausstellungsbereiche, Sonderausstellungen und...Flash - Video

Spectrum Two

Spectrum TwoA terrorist organization known as the "P" double "O" has kidnapped a Federal Reserve Bank worker named Miranda Right, (Molly Myers) who has the key to manipulate the federal bank...Flash - Video

Videos found for Spectrum

fullspectrumdaythree_02_free.wmv

fullspectrumdaythree_02_free.wmvFull Spectrum Warrior clip #8 - 7.8 MB Full Spectrum Warrior clip #9 - 7.4 MB Full Spectrum Warrior clip #7 - 7.7 MB Duidelijk is dat de graphics en ook zeker de controles van buitengewone kwaliteit z...msmedia: 7.4 MB w:320px - h:240px

spectrum.ram

spectrum.ramThe Mobile Internet: Challenges Facing the Wireless Web Panel April 5, 2001 U.S. Capitol HC-5 Overview | Biographies | Video of the Wireless Spectrum event (RealPlayer required) On Thursday, April 5, ...realmedia: 2.8 MB w:320px - h:240px

spectrum_monitoring.wmv

spectrum_monitoring.wmvDifferent spectrums captured as a film in wmv format: High data rate (614 Kbit/s; 10 MB) Low data rate (172 Kbit/s; 2,8 MB)msmedia: 9.8 MB w:640px - h:480px

Stupid Jackass Skateboarding : TRiP...

Stupid Jackass Skateboarding : TRiP Spectrum (funny video / movie...Stupid Jackass Skateboarding : TRiP Spectrum (funny video / movie) TRiPskateteam productions 14 min 39 sec - Dec 23, 2005 Skateboading, Skateboard. TRiP Spectrum; TRiPskateteam , skateboarding video...flash: 0 MB w:320px - h:266px

26710 REVERSAL OF SYMPTOMS IN AN AU...

26710 REVERSAL OF SYMPTOMS IN AN AUTISM SPECTRUM DISORDER26710 REVERSAL OF SYMPTOMS IN AN AUTISM SPECTRUM DISORDER MultiVu 12 min 59 sec - Feb 8, 2007 Rett Syndrome is reversed in genetic mouse model Cincinnati, OH (February 08, 2007) PRNewswire / mdas...flash: 0 MB w:320px - h:266px

Answers for Spectrum

BLUMMER D

What is the difference between autism, and autism spectrum?

BLUMMER DAutism Spectrum Disorder (ASD) is a general term that includes Autism, Asperger Syndrome, PPD-NOS and others. The reason they used different terms is that the Dr. gave you a specific diagnosis of Aut...
Lexie

How do I find the mass spectrum for Indium?

LexieFirst off, the average atomic mass (114.8) is close to 115 so you should have a high percentage of that and a small percentage of 113. Let x be the decimal % of In-115. Then 1-x = the decimal % of In...
baysik

What invisible portion of the electromagnetic spectrum can give you a sunburn?

baysikthe ultra violet or uv part
Song P

How do you think a continuous spectrum from an incandescent light bulb would look if the filament were?

Song PAs the temperature is raised the fraction of light in the blue end of the spectrum increases relative to that in the red end. Therefore, the relatively low temperature filament would glow red and gra...
cat_in_pool

How to find the molecular and fragmented molecular ions in the mass spectrum?

cat_in_poolThe molecular ion is going to correspond to the total mass of the unfragments part e.g. the mass of nitrogen trichloride and is going to the the highest mass peak on the spectrum. The fragement peaks...

Attributions

Web, Images, Video, News and Answers Search Results are "Powered by Yahoo!"
Web, Images, News Search Results are "Powered by MSN"
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article .
Disclaimer: All other trademarks, registered trademarks, product names and company names or logos mentioned herein are the property of their respective owners.
Contact Us[X]
Your name
Email
Subject
Your comment