求论坛里的高人帮忙解答一个物理现象
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新语丝读书论坛
送交者: 热风 于 2011-04-04, 08:08:29:
一个纸管,把一头点燃,不管纸管是什么方向放置,烟都会从从另一头冒出来,为什么?
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热风
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tj
(16 bytes)
2011-04-04, 08:22:38
(571765)
plus diffusion (无内容)
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blobfish
(0 bytes)
2011-04-04, 10:14:59
(571779)
ignorable. (无内容)
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tj
(0 bytes)
2011-04-04, 10:17:52
(571780)
thermal expansion can only increase the volume by 50% at room temperature
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blobfish
(54 bytes)
2011-04-04, 10:25:34
(571782)
No. paper flame is about 800-1000 K, triple of ambient temperature.
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tj
(105 bytes)
2011-04-04, 11:44:46
(571822)
smoke is solid particles not gas, so cannot expansion except fiffusion (无内容)
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blobfish
(0 bytes)
2011-04-04, 13:23:42
(571943)
air is heated, carrying the particles. (无内容)
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tj
(0 bytes)
2011-04-04, 13:31:01
(571958)
do you know what's the princinple of diffusion?
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blobfish
(256 bytes)
2011-04-04, 13:40:15
(571968)
I do it everyday. (无内容)
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tj
(0 bytes)
2011-04-04, 14:14:03
(572030)
is the japnese nuclear pollution is diffusion or expansion? (无内容)
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blobfish
(0 bytes)
2011-04-04, 15:08:27
(572085)
theoretical or exp? (无内容)
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blobfish
(0 bytes)
2011-04-04, 14:28:23
(572056)
Do you mean: advection (无内容)
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GreenChineseOnion
(0 bytes)
2011-04-04, 09:04:51
(571768)
yes :-) sorry for the typo. (无内容)
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tj
(0 bytes)
2011-04-04, 09:06:55
(571769)
哈哈,有点道理,谢了! (无内容)
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热风
(0 bytes)
2011-04-04, 08:41:49
(571766)
应该问“都会有烟从另一头冒出来” (无内容)
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qtl
(0 bytes)
2011-04-04, 08:12:28
(571762)
对,这样说严禁些 (无内容)
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热风
(0 bytes)
2011-04-04, 08:15:39
(571763)
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