In the field of particle physics, it has been established by many scientific experiments that the universe had a beginning in the remote past and it will have an eventual collapse in some remote future. In this context, the Second Law of Thermodynamics asserts that the processes occur in a certain direction but not in the reverse direction. A cup of hot coffee left on a table in an office, for example, eventually cools, but a cup of cold coffee on the same table never gets hot by itself, that is, the heat can only flow from hot to cold bodies. The science of thermodynamics deals with “equilibrium states” and it declares that a system, which is in equilibrium, experiences no changes when it is isolated from its surroundings. For example, a system is in thermal equilibrium if the temperature is same throughout the entire system. And in this state…
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