Google兩下 排碳量等同煮壺茶(0.2 gm v … - Google

By Edwina
at 2009-01-13T11:35
at 2009-01-13T11:35
Table of Contents
※ 引述《abc623 (ETD)》之銘言:
: ※ 引述《newFBI (FBI)》之銘言:
: : Google兩下 排碳量等同煮壺茶
: : * 2009-01-12
: : * 中國時報
: : * 【潘勛/綜合報導】
: : 排行世界第一的網路搜尋引擎「Google」耗電量驚人,美國哈佛大學物理學家魏斯
: : 納─葛洛斯(Alex Wissner-Gross)的最新研究指出,如果,利用家中的桌上型電腦來從
: : 事Google搜尋兩次,其所排放的二氧化碳量,幾乎等同於煮一壺英國茶。
: : 魏斯納─葛洛斯表示,Google搜尋引擎動用到全世界多個龐大資料中心,消耗許多
: : 電力,對環境絕對有影響。而他估算,每用Google搜尋一次,就會產出七克的二氧化碳,
: : 而煮一壺英國茶則產出十五克。
: 魏斯納─葛洛斯 大大
: http://www.alexwg.org/AWG-CV.pdf
: 看他的CV好像是 MIT
: 三個學士學位 而且是MIT電機系第一名畢業
: 博士碩士都是哈佛的
: 這篇研究好像有投稿 不曉的是哪個journal invited
: A. D. Wissner-Gross, T. M. Sullivan.
: “Pervasive monitoring of the environmental footprint
: of network activity,” Invited.
: 這篇外電報導是來自蠻多國外重要媒體 英國 Times 衛報
: .....都有
: 不曉的實際可信度如何?
: http://tinyurl.com/6tn275
: 不過呢google 的senior VP Urs Hölzl
: 有發文辯駁 Google 他們估計是每次search約 0.2 gm Co2
: (報導為7 gm, 相差了35倍)
: 相當用了人體10秒的能量
: one Google search is equivalent to about 0.2
: grams of CO2.
: a Google search uses just about
: the same amount of energy that your body burns in ten seconds
: http://tinyurl.com/7a7p4j
: Any comments ??
: ※ 編輯: abc623 來自: 116.59.127.252 (01/13 01:38)
: 推 darKyle:那Matrix搜尋一個有覺醒可能的人類要多少能量? 01/13 01:47
: 推 eggimage:超級賽亞人對地球暖化的影響又是多麼嚴重呢? 01/13 06:08
Google知道這事後
很快在他們官方Blog裡面提出說明
http://tinyurl.com/7a7p4j
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.
耐人尋味的是這段
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.
略翻如下
和原po說的一樣 他們說自己每次搜尋時會產生0.2g的CO2
以現有歐盟標準 開車每公里產生140 g的CO2
(感覺他們又拉一個更大的當煙霧...你扯我我就扯汽車 XD)
--
你放心,「童叟無欺、實事求是」是我教人泡妞的宗旨……
--
: ※ 引述《newFBI (FBI)》之銘言:
: : Google兩下 排碳量等同煮壺茶
: : * 2009-01-12
: : * 中國時報
: : * 【潘勛/綜合報導】
: : 排行世界第一的網路搜尋引擎「Google」耗電量驚人,美國哈佛大學物理學家魏斯
: : 納─葛洛斯(Alex Wissner-Gross)的最新研究指出,如果,利用家中的桌上型電腦來從
: : 事Google搜尋兩次,其所排放的二氧化碳量,幾乎等同於煮一壺英國茶。
: : 魏斯納─葛洛斯表示,Google搜尋引擎動用到全世界多個龐大資料中心,消耗許多
: : 電力,對環境絕對有影響。而他估算,每用Google搜尋一次,就會產出七克的二氧化碳,
: : 而煮一壺英國茶則產出十五克。
: 魏斯納─葛洛斯 大大
: http://www.alexwg.org/AWG-CV.pdf
: 看他的CV好像是 MIT
: 三個學士學位 而且是MIT電機系第一名畢業
: 博士碩士都是哈佛的
: 這篇研究好像有投稿 不曉的是哪個journal invited
: A. D. Wissner-Gross, T. M. Sullivan.
: “Pervasive monitoring of the environmental footprint
: of network activity,” Invited.
: 這篇外電報導是來自蠻多國外重要媒體 英國 Times 衛報
: .....都有
: 不曉的實際可信度如何?
: http://tinyurl.com/6tn275
: 不過呢google 的senior VP Urs Hölzl
: 有發文辯駁 Google 他們估計是每次search約 0.2 gm Co2
: (報導為7 gm, 相差了35倍)
: 相當用了人體10秒的能量
: one Google search is equivalent to about 0.2
: grams of CO2.
: a Google search uses just about
: the same amount of energy that your body burns in ten seconds
: http://tinyurl.com/7a7p4j
: Any comments ??
: ※ 編輯: abc623 來自: 116.59.127.252 (01/13 01:38)
: 推 darKyle:那Matrix搜尋一個有覺醒可能的人類要多少能量? 01/13 01:47
: 推 eggimage:超級賽亞人對地球暖化的影響又是多麼嚴重呢? 01/13 06:08
Google知道這事後
很快在他們官方Blog裡面提出說明
http://tinyurl.com/7a7p4j
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.
耐人尋味的是這段
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.
略翻如下
和原po說的一樣 他們說自己每次搜尋時會產生0.2g的CO2
以現有歐盟標準 開車每公里產生140 g的CO2
(感覺他們又拉一個更大的當煙霧...你扯我我就扯汽車 XD)
--
你放心,「童叟無欺、實事求是」是我教人泡妞的宗旨……
--
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