Tópico: Blackle - The search engine that saves energy

[Nightstalker]

How is Blackle saving energy?

Blackle was created by Heap Media to remind us all of the need to take small steps in our everyday lives to save energy. Blackle searches are powered by Google Custom Search.
Blackle saves energy because the screen is predominantly black. "Image displayed is primarily a function of the user's color settings and desktop graphics, as well as the color and size of open application windows; a given monitor requires more power to display a white (or light) screen than a black (or dark) screen." Roberson et al, 2002

In January 2007 a blog post titled Black Google Would Save 750 Megawatt-hours a Year proposed the theory that a black version of the Google search engine would save a fair bit of energy due to the popularity of the search engine. Since then there has been skepticism about the significance of the energy savings that can be achieved and the cost in terms of readability of black web pages.
We believe that there is value in the concept because even if the energy savings are small, they all add up. Secondly we feel that seeing Blackle every time we load our web browser reminds us that we need to keep taking small steps to save energy.

How can you help?

We encourage you to set Blackle as your home page ( set ). This way every time you load your Internet browser you will save a little bit of energy. Remember every bit counts! You will also be reminded about the need to save energy each time you see the Blackle page load.
Help us spread the word about Blackle by telling your friends and family to set it as their home page. If you have a blog then give us a mention. Or put the following text in your email signature: "Blackle.com - Saving energy one search at a time".
Have a look at our energy saving tips page for ideas on steps you can take to save energy.
There are a lot of great web sites about saving energy and being more environmentally friendly. They are full of great tips covering the little things that we can all do to make a difference today. Try Blackling "energy saving tips" or visit treehugger.com a great blog dedicated to environmental awareness.

www.blackle.com

[Jeanioz]

The RV is also save energy.

The CC must follow these examples too, now!

[Andre]

A recent research by Microsoft proved that, while it's true that in older monitors, black screens do save energy, in the new LCD ones, it's the opposite. If I find the link I post it here.

[Alenônimo]

I've seen chosen colors for enery saving before. Black isn't one of them.

[Buckaroo Banzai]

RACISM.

And there is no "image search", scholar and etc.

I tend to prefer black or dark screens, like in the computers of the old days. I usually use opera's user-imposed CSSs. The bad side is that it sometimes messes with part of the page design I wouldn't like to change.

[Galileo]

On LCD displays, color may confer no benefit at all. In response to my inquiry, Steve Ryan, program manager for Energy Star’s power-management program, asked consulting firm Cadmus Group to run a quick test by loading Blackle, Google and the Web site of the New York Times (which is, like Google, mostly white on-screen) on two monitors — one CRT, one LCD — and connecting a power meter to both. “We found that the color on screen mattered very little to the energy color consumption of the LCD monitor,” said David Korn, principal at Cadmus, which specializes in energy and environment, and does work for the government. The changes were so slight as to be within the margin of error for the power meter. Tweaking brightness and contrast and settings had a bigger effect. The bulkier CRT screen did see savings with Blackle of between 5% and 20%. Mr. Korn emphasized that this was a quick test, not a rigorous study.

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