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Thermodynamic equilibrium is the zeroth law of thermodynamics.
¾î¶² °èÀÇ ¹°Ã¼ A¿Í B°¡ ¿Àû ÆòÇü»óÅ¿¡ ÀÖ´Ù.
Objects A and B of a system are in thermal equilibrium.
±×¸®°í B¿Í C°¡ ¿Àû ÆòÇü»óÅ¿¡ ÀÖ´Ù.
And B and C are in thermal equilibrium.
±×·¯¸é, A¿Í Cµµ ¿ÆòÇü»óÅ¿¡ ÀÖ´Ù.
Then, A and C are also in thermal equilibrium.
ÀÏ»óÀû ¾ð¾î·Î Ç¥ÇöÇÏ¸é ¿Âµµ°¡ °°Àº °Í³¢¸®ÀÇ ¿Âµµ´Â °°´Ù´Â ¸»ÀÌ´Ù.
In everyday language, it means that things with the same temperature have the same
temperature.
¸Å¿ì ´ç¿¬ÇØ º¸ÀÌ´Â °ÍÀÌ´Ù.
It seems very natural.
±×·¯³ª ¿ì¸®°¡ ÀÌ°ÍÀ» ´ç¿¬ÇÏ°Ô ¿©±â´Â °ÍÀº, ´ÜÁö ¿ì¸®°¡ »ì°í ÀÖ´Â ¿ìÁÖ°¡ ÀÌ·± ¹ýÄ¢À» µû¸£´Â °ÍÀ» ¾ÆÁÖ ¿À·§µ¿¾È º¸¾Æ¿Ô±â ¶§¹®ÀÌ´Ù.
But we take this for granted only because we have seen the universe in which we live
obey these laws for so long.
¾ó¸¶µçÁö ¿¹¿ÜÀÇ °æ¿ì°¡ ÀÖÀ» ¼ö ÀÖ´Ù.
There can be any number of exceptions.
´Ù¸¥ ¿ìÁÖ°¡ Á¸ÀçÇÑ´Ù¸é ¿ÀÈ÷·Á ÆòÇü »óÅ°¡ ÀÌ»óÇÒ ¼öµµ ÀÖ´Ù.
If other universes exist, the equilibrium may be strange.
Áï ±×°ÍÀÌ ¾ÈÁ¤ÀûÀÎ °Ô ¾Æ´Ï¶ó ¿¡³ÊÁö°¡ ¹«Á¶°Ç °Ýµ¿ÇÏ°í ¹«Á¶°Ç ¼øȯÇÏ´Â °Ô ¾ÈÁ¤ÀûÀÎ ¼¼°èÀÏ ¼öµµ ÀÖ´Â °ÍÀÌ´Ù.
In other words, it may be a stable world where energy is unconditionally turbulent
and circulates unconditionally rather than stable. |