Visible Light
Our eyes perceive a tiny sliver of the electromagnetic spectrum. The wavelengths from (approximately) 400 to 750 nanometers provide us with our physical view of the universe.
![]() | Reproduced with permission from Computer Desktop Encyclopedia. Copyright (c) 1981-2009 The Computer Language Company Inc. All rights reserved. |
Additional Resources
- Apple Magic Mouse
- Apple's latest pointer, the Magic Mouse, is included with its new iMac desktops, but you can purchase it separately for $69. Just don't confuse it with the Mighty Mouse, because although they're the same price, the differences end there. The Magic Mouse gets an aerodynamic face-lift and also supports...
- Product reviews 2009-10-21
- Finally! A Three-Cornered Consulting Service for Enterprise 2.0
- Its not too often I endorse a new service - in fact, I never have without a lot of due diligence and at least some production history. Â So, for the first...and potentially only....time ever, I'm telling you that I'm truly excited about the launch of Pragmatic Enterprise 2.0. Â I'm...
- Blog posts 2009-10-20
- Motorola Entice W766 (Verizon Wireless)
- The Motorola Entice W766 is the latest Motorola flip phone to join the Verizon Wireless family, and it is almost the same as the Motorola Rapture VU30, which was released late last year. It's not as sleek and shiny as the Rapture, but the Entice does have external touch-sensitive keys...
- Product reviews 2009-10-07
- The case of the fake money-mules: Inside the URLZone Trojan network
- Security EvangelistHi, boy I sure wish people would stop using the word Evangelist in the wrong way. An Evangelist is someone you preaches the Gospel of Jesus Christ, not a secular title at all. Wikipedia recently removed the secular definition and Webster is researching it. Evangelist is from the Greek...
- Discussion threads 2009-10-06
- VelaClock 2.2 (Mac)
- VelaClock is a world clock widget with a highly configurable user interface. Besides displaying local times, users can quickly display the time of sunrise, sunset, or twilight, duration of daylight, current phase of moon, time zone information and much more. The interface can easily be configured to use a minimum...
- Software downloads 2009-10-01
- VelaClock Deluxe 2.2 (Mac)
- VelaClock Deluxe is a world clock widget with a highly configurable user interface. Users can quickly display the time of sunrise, sunset, or twilight, duration of daylight, moonrise, moonset, phase of moon, time zone information and more. VelaClock Deluxe has all the features of the standard version, plus: Add...
- Software downloads 2009-10-01
- Impressionism Art Screensaver - 900 Paintings 2eb (Windows)
- Over 900 Paintings by more than 100 Impressionist artists in one slideshow screensaver. Works by Claude Monet, Pierre Auguste Renoir, Edgar Degas, Eduoard Manet, Alfred Sisley, Berthe Morisot, John Singer Sargent, Mary Cassatt, Camille Pissarro, Thomas Eakins, William Merritt Chase, Winslow Homer, and Gustave Caillebotte. Radicals in their time, early...
- Software downloads 2009-09-30
- Top digital camera phones on the market
- While the quality isn't nearly as good as a pocket camera or DSLR, there's no denying that camera phones are chasing them. After a LA Times study found that more pictures on the online photo-sharing hub, Flickr, came from the iPhone, it leads one to wonder what kind of pressure...
- Blog posts 2009-09-25
- Golasso Classroom Exam Clock 1.1 (Windows)
- Golasso Classroom Exam Clock allows a teacher to display the time remaining in a test on any PC monitor. The numbers are displayed in the classic style of electronic boards with light bulbs. Three message lines can also be displayed while the clock is winding down. Start and stop the...
- Software downloads 2009-09-23
- Soft Light Theme (Mobile)
- - works perfectly on S60 3rd edition phones and S60 5th Edition touch screen phone. Great theme, enjoy! Installation guide:Series 60 phones: Before installation please change this setting to "All": Menu | Tools | App.mgr. | Options | Settings | Software installationDownload the .sis file to your PC, then install...
- Software downloads 2009-09-22
- Motorola Debut i865 (Boost Mobile)
- Most iDEN push-to-talk phones are quite bulky, and come in either a clamshell or candy bar form factor. The Motorola Debut for Boost Mobile, however, bucks that trend. It is the first ever iDEN push-to-talk phone to come in a slider design, which gives it a rather svelte appearance. Aside...
- Product reviews 2009-09-18
- Oppo BDP-83
- Photo gallery:Oppo BDP-83Ever since standalone Blu-ray players hit the market, there's been a great deal of anticipation for an Oppo Blu-ray player, mainly because of the company's reputation for making excellent upconverting DVD players. Oppo held out for quite some time, and in retrospect it was a smart move; almost...
- Product reviews 2009-09-02
- Shape Of Light Theme (Mobile)
- Enjoy The Shape Of Light Theme by Nitrio. It works perfectly on S60 3rd edition phones and S60 5th Edition touchscreen phones . Great theme, enjoy!Installation guide:Series 60 phones: Before installation please change this setting to "All": Menu | Tools | App.mgr. | Options | Settings | Software installationDownload the...
- Software downloads 2009-08-22
- Visioning Apple's netbook futures
- Visioning Apple's netbook futuresWhat's wrong with the word "envisioning"?What's wrong with the word "envisioning"? Was there really a need to create a chimera like "visioning"? It seems to belong to the same family of buzzy neologisms that spawned "gifting" (for "giving a gift to someone"). In medical science, we us...
- Discussion threads 2009-08-02
- LED Scroller (Mobile)
- - the scroller that actually LOOKS like a LED display!LED scroller lets you type in a text, choose color and speed, and scroll the text sideways like a LED display on your Android! As seen on billboards, stock tickers, banners and traffic signs everywhere. Cool in the dark, and nifty...
- Software downloads 2009-07-20
- NYU researchers create 'invisible flash;' takes photos without glare
- Two New York University researchers have created a camera that takes photos with an "invisible flash" of infrared and ultraviolet light to a smarter way to take photos in the dark. NYU professor Rob Fergus and doctoral student Dilip Krishnan created the camera...
- Blog posts 2009-07-17
- 2009 Nissan Rogue SL FWD
- Photo gallery:2009 Nissan Rogue SL FWDThe word "rogue" is usually applied to people and things that break from convention and do the unexpected. Rogues catch you off guard with their speed and stealth. However, the vehicle that Nissan calls "rogue"--the 2009 Nissan Rogue SL FWD, to be exact--is a decidedly...
- Product reviews 2009-07-07
- 2009 Nissan Sentra SE-R Spec. V
- Photo gallery:2009 Nissan Sentra SE-R Spec. VIn the crowded field of overpowered compact cars, the 2009 Nissan Sentra SE-R Spec V faces heavy competition from the Honda Civic Si, Volkswagen GTI, and Mazdaspeed3. So what can the Nissan bring to stand a chance against these tuner stalwarts? The answer is...
- Product reviews 2009-06-26
- Sony KDL-52V5100
- Photo gallery: Sony KDL-V5100 series Sony's extensive LCD lineup includes a range of higher-end models, but the KDL-V5100 is not among them. This is Sony's least expensive series of 2009 HDTVs to include 120Hz processing, and it lacks the interactive extras and design complexities of its step-up brethren....
- Product reviews 2009-06-19
- US State Department Reschedules Twitter Maintenance Due to Iran Primetime
- US State Department Reschedules Twitter Maintenance Due to Iran PrimetimeYou distorted what was said!The statement in this blog, "Statistically the election looks reasonably clean so far as this post by Nate Silver discusses...," totally distorts what Nate Silver actually said.Silver's point was NOT that the Irani election statistically looks clean,...
- Discussion threads 2009-06-17
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