Abridged texts

  It is observed that a higher temperature object which is in contact with a lower temperature object will transfer heat to the lower temperature object. The objects will approach the same temperature, and in the absence of loss to other objects, they will then maintain a constant temperature. They are then said to be in thermal equilibrium.  Simply stated the zeroth law states that if objects are touching each other, and if they left alone they will eventually reach the same temperature 

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