Blackle.com
Encyclopedia
Blackle is a website powered by Google Custom Search and created by Heap Media, which aims to save energy by displaying a black background and using grayish-white font color for search results. Blackle claims saving 2,771,437.455 (and counting) watt-hours
of energy, a claim currently under dispute.
and LCD monitors. There is dispute over whether there really are any energy saving effects, especially for users of LCD screens, where there is a constant black light, while pixel shaders are used to display various colors.
This concept was first brought to the attention of Efap Media by a blog post, which estimated that Google could save 750 megawatt hours a year by utilizing it for CRT
screens. The homepage
of Blackle provides a count of the number of watt hours claimed to have been saved by enabling this concept.
Watt-hour
The kilowatt hour, or kilowatt-hour, is a unit of energy equal to 1000 watt hours or 3.6 megajoules.For constant power, energy in watt hours is the product of power in watts and time in hours...
of energy, a claim currently under dispute.
Concept
The concept behind Blackle is that computer monitors can be made to use less energy by displaying much darker colors. Blackle is based on a study which tested a variety of CRTCathode ray tube
The cathode ray tube is a vacuum tube containing an electron gun and a fluorescent screen used to view images. It has a means to accelerate and deflect the electron beam onto the fluorescent screen to create the images. The image may represent electrical waveforms , pictures , radar targets and...
and LCD monitors. There is dispute over whether there really are any energy saving effects, especially for users of LCD screens, where there is a constant black light, while pixel shaders are used to display various colors.
This concept was first brought to the attention of Efap Media by a blog post, which estimated that Google could save 750 megawatt hours a year by utilizing it for CRT
Cathode ray tube
The cathode ray tube is a vacuum tube containing an electron gun and a fluorescent screen used to view images. It has a means to accelerate and deflect the electron beam onto the fluorescent screen to create the images. The image may represent electrical waveforms , pictures , radar targets and...
screens. The homepage
Homepage
A home page or homepage has various related meanings to do with web sites:* It most often refers to the initial or main web page of a web site, sometimes called the front page ....
of Blackle provides a count of the number of watt hours claimed to have been saved by enabling this concept.