Nxgxl blog

Friday, May 24, 2013

Our energetic cosmos

I think Brian Cox did an excellent job of explaining astrophysics in a way accessible to a very wide range of people. In a nutshell the beginning of time and space is a singularity at which extremely large quantities of energy are in the same infinitesimal space which reaches a critical mass for an explosion like the big bang our own universe began in. The energy is blasted into the space / time matrix created at the explosion. After that energy coalesces and sometimes gathers enough mass to form a star, sometimes just enough for dust, asteroids and planets or giant clouds.

The end, Brian argues, is the gradual decay of mass into pure quanta of energy that spread themselves out into a huge uniform space. Brian considers this a necessary consequence of the law of entropy which postulates that all energy has a built in tendency to disorganize the total energy by ending as evenly spread low level heat.

A couple of questions remain in my mind.

Why did the energy gather at the singularity?

Why is it inevitable that energy will eventually be uniformly distributed?

The last thought is that maximum entropy is actually ordered in the sense that the energy is uniform and spread out in a time / space matrix. I think that is is not an entropy maximum since it is ordered and moving any one energy quantum would render the end state more disordered. Perhaps the answer is that energy rather stays clumpy but speed away from all other clumps forming a fractal pattern that is unchanging because no clump has any means of disordering any other.



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