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BLACKLE.com - eko-Google


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#1 Rastko

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Posted 03 August 2007 - 17:06

Prosta računica kaže da ako bi Google.com koristio crnu pozadinu umesto bele, uštedeli bismo 750 Megavat-časova godišnje. Brojka je poprilična, složićete se. Osim toga što štedi struju (manje lampica na monitoru je upaljeno kada otvorite tu stranu), ova stranica napravljena je tako da Vas podseća kako još možete uštedeti energiju u svakodnevnom životu. Postavite ovu stranicu kao home page i svaki put kada pretražujete internet, odmorite oči, sačuvajte koje drvo i osećajte se bolje!

www.blackle.com

#2 Hannah

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Posted 03 August 2007 - 17:38

Postavljeno. smile.gif

#3 jddipqd

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Posted 03 August 2007 - 18:43

Samo ako imate crt monitor... Na lcd je besmisleno.

#4 Rastko

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Posted 06 August 2007 - 09:39

QUOTE(jddipqd @ 3 Aug 2007, 19:43) <{POST_SNAPBACK}>
Samo ako imate crt monitor... Na lcd je besmisleno.


Zasto? Explanation please...

#5 lusy

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Posted 06 August 2007 - 11:28

thumbup.gif

#6 jddipqd

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Posted 06 August 2007 - 14:00

QUOTE(Rastko @ 6 Aug 2007, 10:39) <{POST_SNAPBACK}>
Zasto? Explanation please...

Na TFT LCD monitorima, najveći deo struje troši pozadinsko osvetljenje, a pozadinsko osvetljenje je uvek upaljeno.
U suštini, slika se formira tako što se na tranzistore koji kontrolišu pojedinačne pixele dovodi određeni napon čime se polarizuju tečni kristali u sloju iznad. Zavisno od polarizacije, kristali propuštaju više ili manje pozadinskog svetla.
E sad, nisam siguran da li kristali propuštaju svetlo ili ne kada na tranzistorima nema napona, mada, pošto sam po netu viđao da potrošnja sa crnim ekranom varira od 1-2% manje, do 1-2% više, pretpostavljam da to zavisi od proizvođača panela.

#7 Gojko & Stojko

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Posted 07 August 2007 - 07:23

The Sydney-based makers of a so-called eco-friendly version of Google claim they're helping to rescue the planet, but all that's really been saved is the piles of money they're banking in the process.

Hundreds of thousands of searches a day are conducted by Blackle.com users, who use the search engine instead of Google because they believe they're doing their bit for the environment.

Its creator, Toby Heap, said Blackle.com - a custom version of Google with a black rather than a white background - could save thousands of watts of power a year because it took less juice for a monitor to display black than white.

But that claim is now being disputed by those who have tested the theory and say the power saving benefits are negligible or non-existent.

Far from an altruistic venture, the site, like Google itself, makes money from sponsored links that run next to search results.

...

One of the technology enthusiasts to test whether or not the site's claims had any scientific grounding was Darren Yates, an Australian technology journalist who reviews computer hardware for computer magazines.

He found only tube-based CRT monitors, which have been phased out in favour of newer LCD-based models in most countries, showed any real difference in power consumption between Blackle and Google.

But even with a CRT monitor the drop in power consumption when searching through Blackle was a meagre 7 watts.

Furthermore, Yates actually recorded a small increase in power consumption when using Blackle with LCD monitors, which are sold with most new computers and all laptops.

Yates concluded: "So at the very least, supporters of a black-screen Google are overstating their power savings by about double. At worst, as CRT monitors are continually phased out in favour of LCD screens, the power consumption of a black-screen Google will actually be more than what we already have with the standard white Google."


Ceo tekst ovde


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#8 Rastko

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Posted 07 August 2007 - 12:10

If so, my bad!

#9 xvuk

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Posted 25 August 2007 - 15:31

skraceno i uprosceno.... nacin na koji svetlo gradi sliku je inverzan kod lcd/tft monitora u odnosu na crt/katodne:

kod crt monitora bela boja se dobija kad crvena, zelena i plava svetlost maksimalnom snagom pogode foto-osetljiv sloj na ekranu (potrosi se najvise struje)
za crnu tackicu potrosnja je minimalna jer katodna cev ne mora nista da emituje

kod lcd/tft monitora... pozadinsko osvetljenje uvek radi... znaci uzmimo da je to bela boja... crna boja na ekranu lcd/tft monitora se ne dobija neaktivnoscu odnosno odsustvom svetlosti, jednostavno zacrni se tackkica u matrici tako da kroz nju svetlost ne prolazi, ali je ona i dalje tu (tj. iza)... kod tft-a ekran kada je beo... to znaci da su sve tackice u matrici ugasene (trose najmanje strue) a kad je crn onda su sve tackice maksimalno upaljene

(skroz suprotan koncept u odnosu na crt)