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stonebreaker

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[交流] Why does hot water freeze faster than cold water?

RT:Why does hot water freeze faster than cold water?

Why does hot water freeze faster than cold water?

Note: After submitting your answer, say hi to us via twitter @Hermes_Comms and we will follow you!

It seems a simple enough question - yet it has baffled the best brains for at least 2,300 years.

Now Hermes 2012 has joined forces with the Royal Society of Chemistry to offer £1000 to the person or team producing the best and most creative explanation of the phenomenon, known today as The Mpemba Effect.

The deadline for public entries is 30 July, because hard on the public's heels will be a bunch of the world's acutest postgraduate scientists who, sponsored by the Royal Society of Chemistry, will be attacking the same problem while locked in a posh hotel in Windsor Great Park during the first week of the Olympic Games.

The 60 brains are part of Hermes 2012, a project to harvest some of the brightest talent from around the globe: a cerebral Olympian gathering, one might say. They will be in Windsor to compete against each other in the project, run with input from the four major London Universities, working under the umbrellas of the Thomas Young Centre and the Centre for Doctoral Training in Theory and Simulation of Materials.

Any medium or technology can be employed to make the case, including articles, illustrations or even film. Submissions can be based on, and reference, existing research. The winning submission will be scientifically sound, and arresting in presentation and delivery. The judges' decision will be final.

For more information, see the RSC press release, our recent coverage in The Guardian, The Telegraph, The Times, the World at One radio program and The Daily Mail.

奖金1000英镑哦,亲

链接:http://www.hermes2012.org/ice/
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十年磨练

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stonebreaker(金币+1): 谢谢参与
不知道
6楼2012-06-29 16:26:12
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caoyan2013

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stonebreaker(金币+1): 谢谢参与
不知道

[ 发自手机版 http://muchong.com/3g ]
7楼2012-06-29 17:09:35
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yuzhiming

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stonebreaker(金币+1): 谢谢参与
个人感觉,热水的水分子运动要比冷水快,传递冷量的速度也比冷水快,传递过程应该是有一个惯性的。最终导致热水比冷水结冰更快。
个人的想法。不知对错。
12楼2012-06-29 19:03:08
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stonebreaker(金币+1): 谢谢参与
en. think about it...
16楼2012-06-29 19:17:06
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lingyuandage

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stonebreaker(金币+1): 谢谢参与
17楼2012-06-29 19:31:44
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匿名

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stonebreaker(金币+1): 谢谢参与
本帖仅楼主可见
18楼2012-06-29 19:51:22
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ylyao

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stonebreaker(金币+1): 谢谢参与
Just study.
21楼2012-06-29 20:31:44
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zyz1981

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stonebreaker(金币+1): 谢谢参与
嘿嘿,参考消息也报道了。
22楼2012-06-30 19:43:28
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yuanyeguhong

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stonebreaker(金币+1): 谢谢参与
闲来逛逛……
24楼2012-06-30 20:30:26
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strive123123

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stonebreaker(金币+1): 谢谢参与
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25楼2012-06-30 20:57:40
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Pelhans

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stonebreaker(金币+1): 谢谢参与
Mpemba Effect   应该是高温的水和低温的水成分不一样吧,例如对流、水蒸气、其他的一些离子成分造成的吧,具体的应该有实验测定。
26楼2012-06-30 21:25:55
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2012-06-29 09:23   回复  
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