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Posts Tagged ‘entropy’

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A luscious apple left to itself over a period of time tends to become mush. Reason for this a law that dictates close-knit atoms tend to loosen up without energy acting on it.

Energy makes the working of universe on a single standard as the apple.

Thermodynamics deals with the study of heat and energy. When water in a kettle is boiled you shall hear it makes sound as water furiously bubbles from source of heat leading to its boiling point. The atoms are passing on heat as they knock each other about. Heat from outside introduced energy.

The laws of thermodynamics describe how energy moves around within a system, whether an atom, a hurricane or a black hole.

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Our universe has an inescapably bleak, desolate fate.

Ludwig Boltzmann was one of the founders of the field of thermodynamics in the nineteenth century. One of the key concepts was based on the second law of thermodynamics. In a closed system as in our universe there is a certain disorder. This means that, given enough time, the most likely state of the universe is one where everything is the in thermodynamic equilibrium. But we clearly don’t exist in a universe of this type since, after all, there is order all around us in various forms, not the least of which is the fact that we exist.

Boltzmann invoked using humans as an analogy.  He explained why we wouldn’t find ourselves in one of the very common equilibrium phases: In equilibrium, life cannot exist. Clearly, what we want to do is find the most common conditions within such a universe that are hospitable to life. But brains are not inert but self aware of life around and of planets galaxies beyond. Why go to other planets take our earth for instance. Are  we not conscious of other life forms? It is in human makeup to compete with others and to influence or change others. Man with his abstract thinking shall formulate ideas and struggle to validate his ideas over others, Even so he cannot escape the laws of thermodynamics

 Boltzmann’s brains are the overwhelming majority of intelligences in this multiverse . According to him these will be lonely, disembodied brains, who fluctuate gradually out of the surrounding chaos and then gradually dissolve back into it. Such sad creatures have been dubbed “Boltzmann brains” by Andreas Albrecht and Lorenzo Sorbo.

benny

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When we consider our universe we shall find simple laws are not simple at all in its working. 

What is thermodynamics but the study of heat and energy. When water in a kettle is boiled you shall hear it makes sound as water furiously bubbles from source of heat leading to its boiling point. The atoms are passing on heat as they knock each other about. Energy  is moved about by introducing heat from outside. The laws of thermodynamics describe how energy moves around within a system, whether an atom, a hurricane or a black hole.

The first law describes how energy cannot be created or destroyed, merely transformed from one kind to another. The second law, however, is probably better known and even more profound because it describes the limits of what the universe can do. This law is about inefficiency, degeneration and decay. It tells us all we do is inherently wasteful and that there are irreversible processes in the universe. It gives us an arrow for time. I have used this analogy of apple before. Apple over a period of times changes colour and become mush when atoms that gave the fruit its crunchiness have loosened up. It gives a period of time. If you go deeper into the atoms there is no change of state. Atom remains atom. It is like the arrow of time has simply vanished. In short there is something complex about the arrow of time being not as simple or energy being indestructible as the first law explains us.

Our universe is a closed system. If you were to apply the arrow of time we need to accept energy within it follows the second law of thermodynamics from which we may draw a doomsday scenario that our universe has an inescapably bleak, desolate fate.

ii

The second law can be expressed in several ways, the simplest being that heat will naturally flow from a hotter to a colder body. At its heart is a property of thermodynamic systems called entropy.

The second equation is a way to express the second law of thermodynamics in terms of entropy. The formula says that the entropy of an isolated natural system will always tend to stay the same or increase – in other words, the energy in the universe is gradually moving towards disorder. Our original statement of the second law emerges from this equation: heat cannot spontaneously flow from a cold object (low entropy) to a hot object (high entropy) in a closed system because it would violate the equation. (ack:Alok Jha-the Observer Dec.1,2013) -To be continued

benny

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