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| ===Maxwell's demon=== | | ===Maxwell's demon=== |
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− | 麦克斯韦的恶魔
| + | 麦克斯韦<font color = 'red'><s>的恶魔</s></font><font color = 'blue'>妖</font> |
| {{unreferenced|section|date=August 2018}} | | {{unreferenced|section|date=August 2018}} |
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| James Clerk Maxwell imagined one container divided into two parts, A and B. Both parts are filled with the same gas at equal temperatures and placed next to each other, separated by a wall. Observing the molecules on both sides, an imaginary demon guards a microscopic trapdoor in the wall. When a faster-than-average molecule from A flies towards the trapdoor, the demon opens it, and the molecule will fly from A to B. The average speed of the molecules in B will have increased while in A they will have slowed down on average. Since average molecular speed corresponds to temperature, the temperature decreases in A and increases in B, contrary to the second law of thermodynamics. | | James Clerk Maxwell imagined one container divided into two parts, A and B. Both parts are filled with the same gas at equal temperatures and placed next to each other, separated by a wall. Observing the molecules on both sides, an imaginary demon guards a microscopic trapdoor in the wall. When a faster-than-average molecule from A flies towards the trapdoor, the demon opens it, and the molecule will fly from A to B. The average speed of the molecules in B will have increased while in A they will have slowed down on average. Since average molecular speed corresponds to temperature, the temperature decreases in A and increases in B, contrary to the second law of thermodynamics. |
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− | 詹姆斯·克莱克·麦克斯韦(James Clerk Maxwell)设想一个容器分为A和B两部分。两部分均在相同温度下充满相同的气体,并彼此相邻由内壁隔开。观察到两侧的分子,一个虚构的恶魔在墙上守着一个微观活板门。当来自A的速度快于平均水平的分子飞向活板门时,恶魔将其打开,该分子将从A飞向B。B中分子的平均速度将增加,而A中分子的平均速度将平均降低。由于平均分子速度与温度相对应,因此与热力学第二定律相反,温度在A中降低,在B中升高。
| + | '''麦克斯韦 James Clerk Maxwell'''设想一个容器分为A和B两部分。两部分均在相同温度下充满相同的气体,并彼此相邻由内壁隔开。<font color = 'red'><s>观察到两侧的分子,一个虚构的恶魔在墙上守着一个微观活板门</s></font><font color = 'blue'>一个虚构的妖精看守着一个内壁上的微型陷门,并观察者内壁两边的分子</font>。当来自A的速度快于平均水平的分子飞向<font color = 'red'><s>活板</s></font>门时,<font color = 'red'><s>恶魔将其打开</s></font><font color = 'blue'>妖精将门打开</font>,该分子将从A飞向B。B中分子的平均速度将增加,而A中分子的平均速度将<font color = 'red'><s>平均</s></font>降低。由于平均分子速度与温度相对应,因此与热力学第二定律相反,温度在A中降低,在B中升高。 |
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| One response to this question was suggested in 1929 by Leó Szilárd and later by Léon Brillouin. Szilárd pointed out that a real-life Maxwell's demon would need to have some means of measuring molecular speed, and that the act of acquiring information would require an expenditure of energy. | | One response to this question was suggested in 1929 by Leó Szilárd and later by Léon Brillouin. Szilárd pointed out that a real-life Maxwell's demon would need to have some means of measuring molecular speed, and that the act of acquiring information would require an expenditure of energy. |
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− | 1929年,Leó Szilárd和后来的 Léon Brillouin 对这个问题提出了一个答案。Szilárd指出,现实生活中的麦克斯韦恶魔需要一些测量分子速度的方法,而获取信息需要消耗大量能量。 | + | 1929年,Leó Szilárd和后来的 Léon Brillouin 对这个问题提出了一个答案。Szilárd指出,现实生活中的麦克斯韦<font color = 'red'><s>恶魔</s></font><font color = 'blue'>妖</font>需要一些测量分子速度的方法,而获取信息<font color = 'blue'>的过程</font>需要消耗<font color = 'red'><s>大量</s></font>能量。 |
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| Maxwell's 'demon' repeatedly alters the permeability of the wall between A and B. It is therefore performing thermodynamic operations on a microscopic scale, not just observing ordinary spontaneous or natural macroscopic thermodynamic processes. | | Maxwell's 'demon' repeatedly alters the permeability of the wall between A and B. It is therefore performing thermodynamic operations on a microscopic scale, not just observing ordinary spontaneous or natural macroscopic thermodynamic processes. |
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− | 麦克斯韦的“恶魔”不断地改变 a 和 b 之间墙体的渗透性。因此,它是在微观尺度上执行热力学操作,而不仅仅是观察普通的自发或自然的宏观热力学过程。
| + | 麦克斯韦的<font color = 'red'><s>“恶魔”不断地</s></font><font color = 'blue'>“妖”重复地</font>改变 A 和 B 之间<font color = 'red'><s>墙体的渗透性</s></font><font color = 'blue'>壁的热透性</font>。因此,它是在微观尺度上执行热力学操作,而不仅仅是观察普通的自发或自然的宏观热力学过程。 |
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| ==Quotations== | | ==Quotations== |