tizianocavigliablog

Se adesso Google inquina

Geek   12.01.09

Google chiude la faccenda. Con i fatti.

Recently, though, others have used much higher estimates, claiming that a typical search uses "half the energy as boiling a kettle of water" and produces 7 grams of CO2. We thought it would be helpful to explain why this number is *many* times too high. Google is fast - a typical search returns results in less than 0.2 seconds. Queries vary in degree of difficulty, but for the average query, the servers it touches each work on it for just a few thousandths of a second. Together with other work performed before your search even starts (such as building the search index) this amounts to 0.0003 kWh of energy per search, or 1 kJ. For comparison, the average adult needs about 8000 kJ a day of energy from food, so a Google search uses just about the same amount of energy that your body burns in ten seconds.

In terms of greenhouse gases, one Google search is equivalent to about 0.2 grams of CO2. The current EU standard for tailpipe emissions calls for 140 grams of CO2 per kilometer driven, but most cars don't reach that level yet. Thus, the average car driven for one kilometer (0.6 miles for those in the U.S.) produces as many greenhouse gases as a thousand Google searches.

Condividi il post di Tiziano Caviglia Blog su Facebook Condividi il post di Tiziano Caviglia Blog su Twitter Condividi il post di Tiziano Caviglia Blog su WhatsApp Condividi il post di Tiziano Caviglia Blog su Telegram Condividi il post di Tiziano Caviglia Blog via Email
promo via Rhadamanth
Liguria da vivere e da esplorare. La guida turistica per le tue vacanze nella Riviera Ligure. Tutto quello che ti serve per realizzare la tua vacanza in Liguria.
Visit Riviera
Liguria da vivere e da esplorare. La guida turistica per le tue vacanze nella Riviera Ligure. Tutto quello che ti serve per realizzare la tua vacanza in Liguria.

Leggi i commenti

1 commento

astolfus ha scritto:

La cattedra ad Harvard l'ha vinta con i punti del Mulino Bianco.

postato il 13/01/2009 alle 18:01:04