God Arises
Nature and Science Speak about God
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the quantitative relations between heat and other
forms of energy. The importance of conservation in
relation to energy is expressed in the first law of
thermodynamics.
The law of Entropy is the second law of
thermodynamics. To understand it, let us take the
example of a metallic bar, which has been heated at
one end but left cold at the other. Heat will instantly
begin to flow from the hot end along the length of
the bar to the cold end, and will continue to do so
until the temperature of the whole bar becomes
uniform. The flow of heat will always be in one
direction, i.e. from warmer to colder bodies and this
flow will never pass spontaneously in the opposite
direction, or even haphazardly in just any direction.
Other examples of such uniform and non-reversible
processes abound in the physical world. For
instance, gas always flows towards a vacuum or
moves from a point of higher pressure towards that
of a lower pressure till its pressure becomes
uniform. It is impossible for any gas to flow in the
reverse direction. Such observations provide the
basis for the second law of thermodynamics. This
law may be stated as follows.
