Showing posts with label entropy. Show all posts
Showing posts with label entropy. Show all posts

Wednesday, September 16, 2009

Humankind: a waste product of the Universe?

In the beginning there was heat.

According to all that is holy in the physics world, the universe is energy. Energy transfer, to be specific and lots of it. So much so that it couldn't contain itself inside such infinite density and blew its brains out to create what we call space. As it cooled and spread out, particles formed to assist in this transfer across greater distances. Now, at that time (the first microseconds of the universe), we're not talking lightyears. No, sir. While muons begat leptons begat quarks begat protons begat electron which begat hydrogen, we've barely moved from the planck length to the atomic length. All for the glory of energy.

As the universe expands and energy is swapped and diffused, hydrogen begat helium and so forth down the line forming cooler and cooler atoms (consult a periodic table near you). At this point the background temperature of the universe is barely above absolute zero. Energy transfers take place mostly in stars. They swap hydrogen for helium for as long as poss and when the juice is sucked out, the cooler metals get spit out like seeds from a grape. That grape seed becomes a planet and when it's energy has bounced around enough to disperse and cool, it forms a crust of molecules in the cold, cold reality of space .

Welcome to our world. The universe is finally cold enough to form water, that refreshing lava of life! There's not much energy going around the surface of the Earth but what there is gets batted around until somehow we evolve from amino acids in the water to rush hour on the Long Island Expressway.

The upshot here is that in essence, from the big bang on down we human beings are a part of the universe's waste stream. Simply a byproduct of spent energy. I'm sure there's a metaphor in there somewhere. Rising from ashes, the wretched refuse...something.

What I wonder is what happened to all that energy? It's still out there somewhere...

Thursday, September 10, 2009

Time flies like an arrow. Fruit flies like a banana.

Time is a real bugger to define.

We observe it through the lens of decay. We grow old. Entropy. All we get is a linear view and from that keyhole perspective we drive ourselves crazy trying to understand it. From the planck view, time doesn't seem to have the same properties that we ascribe to it here on Earth. Tomorrow doesn't follow today because there is no tomorrow. It's a moment, an event, a response or simple action (a simple metaphor in the computing world would be the 1 vs. 0 binary structure) followed by another one and then another.

Many physicists speculate that the universe is simply a collection of such events. A vibration or transfer of energy from particle A to particle B and these transfers are knitted together by the exponential millions in a web that make up space-time. The make up of these particles will wait for another discussion.

Okay, where does that leave us fictitious speculators on the subject of large scale time and time travel? For me, I don't believe there's any possibility to travel back and visit Abraham Lincoln in time to save him from that fateful bullet. Makes for good fantasy but doesn't fit with where science now leads us.

In Quantum SF, time travel has to be more on a grand scale. Billions of years in a blow, traveling back to the Big Bang in the same way we do simply by following a beam of light into the past through Hubble. If we influence time on a planck scale, if we can manipulate individual time 'events' and their relationship to gravity and the transfer energy ... who knows what kind of reality we'd end up with.