"Google has stationed approximately a million computers worldwide to be able to process the 40 billion searches per month. One search request uses as much energy as a low-energy light bulb in one hour." (25000 Joule/Hour = 7 Watt/Second)
If there's any truth in the calculation; we will all be searching in darkness soon.
Quote: Intermediair (article in Dutch). Image: Jeen Berting / Overburen (thanks Jeen!)
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