Showing posts with label time. Show all posts
Showing posts with label time. Show all posts

Thursday, September 6, 2018

Infinitesimal but Inevitable

Went biking a bit later than usual today, had a chore to do first. Wasn’t sure what path to take and chose on the fly. As I went along, a bee flew into my chest. It was a chance encounter; the bee apparently was not coming at me with its stinger and no harm done to me, the bee I’m not sure. Struck me that the odds of this happening – the bee flying to that spot exactly as I entered it – were infinitesimally small. Yet when it happened, the event became inevitable. Everything that bee did that day and every decision I made led the two of us to it. 

The light leaving the sun all morning traveled the 93 million miles to earth in around nine minutes by our time. But as photons don’t experience time, all of them arrived at every spot they would ever be at the same moment, establishing a universal and simultaneous now. As the bee-human encounter happened, it had already/always happened. Folks used to call this fate: everything that happens was fated to happen. Yet the reality we experience has a future that we enter through a combination of factors including free will. We are conscious of the passage of time and can project our decisions and actions into a future that we can thereby affect, at least to some degree. Reality seems to be a kind of entangled state in which everything that will happen, or has happened, or is happening exists at the same moment while yet still unfolding in “real time.” Pretty cool.

Monday, August 6, 2018

Why Time?



I've spent a good deal of time thinking about time.  It is a mystery.  We know it passes, the more quickly it seems as we get older.  Since Einstein, we know it is part of spacetime, baked into the fabric of the universe.  But that simply deepens the mysteries.  Why can we travel in all directions in space but only one in time?  And how can it be that there is no absolute time the same everywhere?  The "now" that  I see all around me is punctured during the day by photons from the sun that show me how that looked nine minutes ago and at night by stars showing me how they existed many thousands of years ago?  When we see those stars, we are looking into the past. Our experience of the "now" of those stars is likewise thousand of years in our future.
 
So time varies by distance in space.  The speed of light -- 186,000 miles per second -- connects these.  Contemplation of the speed of light leads to pondering how light can possibly have a speed.  Objects with mass, when not at rest, have speed.  (Actually, nothing is ever at rest except relatively.)  As an object with mass increases speed, time runs slower as it appears to observers not so moving.  Relative motion, in effect, eats relative time; the quicker something moves, the less time remains that seems to pass for the object moving relative to the observer at rest where "normal" time passes.  Mass-less particles, such as photons, do not experience time.  Mass-less particles are everywhere they will ever be at the same moment and are, in this sense, eternal.  Only objects with mass -- including us -- experience light as traveling in time.  A photon that left Proxima Centauri, traveled 4.25 years and just reached our eyes here on earth, took that photon no time at all. 
 
By capturing some of the particles spewing from the Big Bang and giving them mass, the Higgs Boson may in effect have also created time.  But as there is no universal and simultaneous "now," how can we think about time. As noted, under Einsteinian relativity, time is the fourth dimension and relative to location and motion in the other three.  Yet clearly there is also "now."  We live in it.  Is there not a single "now" that exists for all the photons that fill the universe in their one timeless, eternal moment?  Does that create a universal framework of now?  Perhaps each and every particle of matter exists in its own "now" tied to every other such moment within the crystalline universal now established by light?  Light seems to have a speed because it ties together the universe of separate, individual "nows."   Perhaps mass is simply the way everything is kept from happening at once?  Mass separates us from eternity, immersing us in spacetime where our consciousness has space and time to manifest.  Perhaps time exists to provide a way for the universe to experience itself.

Wednesday, March 9, 2016

Another Interlude: What do Gravity Waves Mean?


Just read the typically excellent articles in Science News on the recent confirmation of gravity waves. The merger of two black holes that triggered the waves that reached earth some 1.3 billion years later converted three solar masses into sufficient energy to send a tiny but measurable ripple to the two LIGO detectors. The total energy released “exceeded that of all the stars in the universe combined.” But as SN notes, the gravity waves did not travel through space – as does light – but as a wave in the fabric of spacetime itself traveling at the speed of light.

It is worth pondering the fact that gravity and light – both seemingly very different types of elementary vectors – both travel at the same finite speed. What is it about the universe that is revealed by the cosmic speed limit of 186,000 miles per second that even gravity obeys?

I've previously suggested that the speed of light measures “our awareness of the distance traveled within spacetime” and that “the speed of light may actually be the speed of consciousness.” At the speed of light, time stops. Someone surfing a photon would be everywhere that photon would ever be at the same moment. We experience the universe as spacetime. We move through it while, in a sense, the universe itself must exist all at once outside space and time. Lots of scientists are looking at ways to use string theory or supersymmetry, positing extra dimensions and multiple universes, to try to explain our universe through what might seem an updated version of efforts to find how many angels can dance on the head of a pin. (Regrets to St Thomas, whom I follow in the thought that when you reach the end of reason, it's a finger pointing to god.) But these efforts beg a question: whatever theory they come up with, why would the cosmos be that way? Reality may not be an infinitely peel-able onion. The fact remains that we live in a universe where even gravity takes time to travel as perceived by us. (I suppose a surfer riding that gravity wave would also be everywhere that four-dimension wave would be at the very same moment.)

Why ask what all this means? The notion of deriving meaning from the fact that we exist and in a world that seems perfect for us is basic to humanity. But beyond this, facing up to these questions may be the way forward to a new science. This would not mean abandoning quantum physics and relativity but thinking our way through them without trying to find dancing angels.

Saturday, February 27, 2016

Deep Time: Take Two


It's hard to fully comprehend the depth of time past. The universe came into existence some 13.8 billion years ago (BYA). The earth was formed around 4.5 BYA. The first signs of life – simple microbes – appear about 3.5 BYA. But as presented in a wonderful book about just how complex and essential they are – Life's Engines: How Microbes Made Earth Habitable by Paul Falkowski – microbes are anything but simple. Microbes – bacteria and archaea – are prokaryotes, single cell life without a nucleus or organelles. Everything else – single cell or multi-cell plants and animals – are eukaryotes: cells containing a nucleus and organelles such as mitochondria. The prokaryotes developed the ability to extract energy from the chemical environment and, eventually, from the sun. It took another two billion years for them to evolve into complex cells: the eukaryotes.

Two billion years is a long time. Why did it take that long to go from bacteria and archaea to the first eukaryotes? The machinery to convert chemicals such as hydrogen sulfide or ammonia, and then the much harder task of using sunlight, to fuel life would have taken a long time to develop. But not just that. Extracting energy from the environment meant a complex process of freeing electrons from chemical bonds, transferring those electrons around within the cell and using them ultimately to create other chemicals that would store those electrons (i.e., serve as “food”) to provide energy for cellular processes. Photosynthesis is an even more complex process that uses sunlight to crack electrons from water and combine them – through intermediate steps – with carbon dioxide to produce carbohydrates and, as a waste product, oxygen. This complex machinery had to evolve step by step through the repeated random changes in DNA and RNA as winnowed through natural selection. (A good part of the first billion years after the formation of earth would have been used for the construction of the RNA/DNA mechanism itself.) As Falkowski argues, the processes for producing and consuming biologic energy work as tightly as a complex and precise system of interlocking gears: one out of place and the whole won't work. All the parts of the machinery had to come on line more or less at once or it would not function. Somehow, the machinery evolved anyway, implying that a lot of time was required for vastly more failures – in which the resulting organism from random mutation simply died – than successes.

That the machinery was there to be evolved – that the givens of the universe allowed such a thing to come into existence – is also worth pondering. As is the fact that we would not be here otherwise.

Saturday, June 20, 2015

Gravity, Mass and Time II


I recently noted that mass, gravity and time may be essential features – givens – of our universe, that gravity is something that slows time and that at the speed of light, time stops. Actually time doesn't stop at the speed of light but becomes instantaneous. At that speed, everything happens at once. It's at an event horizon that time actually just stops passing. As whatever it is that is “falling” into a black hole passes the event horizon, the time that it may be experiencing cannot escape. Beyond that, at the singularity, anything/everything disappears from this universe (leaving aside the mechanism by which black holes “evaporate” over time). The mass and energy falling into the singularity is converted into the very warping of space that is the black hole.

How long does it take to fall from the event horizon into the singularity? Has time there stopped or has it become instantaneous? Apparently, if you could survive passing through the event horizon, you would still experience your own personal time. The length of time you'd experience would be very short but it would pass. As under general relativity there is no absolute standard of time, that would be all that counts for you. Indeed, time may be thought of as something entirely a matter of perspective. As I would be falling through the event horizon experiencing my own usual passage of time – it would not slow down or stop – it would appear to be doing so only to an outside observer experiencing his own usual passage of time.

Our human sense of the passage of time may be an entirely arbitrary experience defined by our nature as biological mechanisms (with mass) operating according to physical laws as elaborated by the evolution of life on our particular planet. One defining process may be the rate at which ribosomes add amino acids to the protein it is building (called translation). In all life on earth this process proceeds at the same speed of 10-20 additions per second. A “second” is a human unit of time but not an entirely arbitrary one as at the most fundamental level it is related to two apparent givens: the ability of our consciousness to hold just 2-3 seconds as our now and the existence of a basic unit – the Planck time – of 5.39x10 to the -44th seconds. Or perhaps we might simply say that our human, species experience of time is one heart beat. That, however, might speed up a bit as we crossed the horizon.

Thursday, June 4, 2015

Light tricks: The Delayed Choice Experiment

Physical Review A reports a recent "experimental observation of simultaneous wave and particle behavior in a narrowband single-photon wave packet."  This is also covered in a more accessible form in Science News.  The experiment is a variation on the delayed choice model that submits a photon to being observed (measured) after it has already been through a double beam splitter setup.  This essentially is a way of forcing the photon to behave first as a particle (by passing it through a beam splitter) and then after having made that "choice" having it behave like a wave again, as predicted by quantum physics.  The recent experiment takes this one step further by first stretching out a single photon so that it takes a small but measurable period of time to pass through the second beam splitter.  With the splitter in place, the photon acts like a wave.  With it removed while the photon is still passing through it, the photon manifests as a particle.  The very same photon during one single act of observation -- in two parts -- is both particle and wave.  This does not violate quantum physics but, as a scientist quoted by Science News suggests:  "‘Wave’ and ‘particle’ are just words.  In quantum physics, those words are imprecise at best."

This beautifully done experiment offers a window into the nature of not only light but the universe.  As noted before, at the speed of light, time does not exist.  Therefore, every photon is everywhere it will ever be at the same instant. The speed of light measures the degree of departure of our existence as mass affected by gravity from that cosmic external moment in which light exists.  When we measure light we seek to capture in time that which exists without time.  Wave and particle are the way we perceive its timeless nature as we move at our own pace through time and space.

Tuesday, May 19, 2015

Gravity, Mass and Time


Recently finished physicist Kip Thorne's The Science of Interstellar about his work to make the movie as scientifically grounded as possible. While written for the interested layperson, some of it was hard to follow. But it provided a lot of food for ruminating about the deep connections between gravity, mass, time and the speed of light.

At the speed of light, time stops. Anything with mass that reached the speed of light also achieves infinite mass. (This is one good reason to believe that nothing with mass can go that fast. Anything of infinite mass would need a great deal of thrust to keep going, indeed, an infinite amount.) Photons have no mass and thus they gain no mass. Anything – some ghost without a machine – traveling with that photon at 186,000 MPS would also be timeless and thus everywhere that photon will ever be all at once.

Time also stops with an infinite mass that is not going anywhere, at a black hole. Gravity slows time. At the event horizon of a black hole, spacetime is so warped that nothing can escape upwards – not time, not space, not matter, not light – but falls down into the black hole until it reaches the singularity at the “bottom.” While the black hole may have a certain mass – the mass left over from the collapse of the star that formed it – the singularity itself has the equivalent of infinite mass. Anyone watching a friend drop into a black hole would never see him or her actually fall all the way past the event horizon. From the outside, the friend would be seen moving ever slower. At some point, a second to the falling friend might be, for example, a billion years to the outside observer.

Not just black holes slow time. Anything with mass does, including earth. Einstein's theory of relativity predicts this. And indeed, time on the GPS satellites (orbiting over 16 thousand miles up) run some 45,900 nano seconds slower per day than clocks on earth. The stronger the gravity, the slower time goes compared to places of less gravity.

Mass warps spacetime and achieves that effect through gravity. We don't understand where gravity comes from and it does not fit into the Standard Theory of quantum physics. Relativity seems to describe the effects of gravity but neither meshes with the Standard Theory nor explains from whence gravity comes. String theory has been the Standard Model's framework to incorporate relativity as quantum gravity. To do so, it would require extra dimensions beyond the four we observe (three space and time). But recent experiments have found no supporting evidence for the simplest forms of such theories.

It may be that mass, gravity, and time are just givens. Gravity is something that slows time. At the speed of light, time stops. Our experience of time – our consciousness – seems related to the speed of light. Mass keeps us from exceeding the speed of light. Random?

Thursday, January 29, 2015

186,000 Miles Per Second


Some time ago, I suggested that perhaps the speed of light is actually the speed of consciousness. The speed of light seems to be one of the universe's givens. We cannot explain why light “travels” at around 186,000 miles per second; it just does. Nor do we really understand why anything traveling at that speed does not experience the passing of time. (At the speed of light, time does not pass.) And of course, we really have no idea of what time is, really. It's just there, an apparently limitless sea that we swim in – and in only one direction, forward.

My Dad used to look up into the sky at night and ask how could all that be just an accident. One might say the same about any of the various fundamental physical constants that science has laid bare. They seem to be just what is needed for a universe in which we could come into being. We live in a Goldilocks universe, not too hot and not too cold.

So perhaps we might ask what does the speed of light tell us, if anything, about the nature of a reality that seems just right for us? First, without a speed of light – which places a limit on matter, which cannot travel any faster and thus must exist in time – everything would happen at once. Because everything does not happen at once – at least to things made up of matter – we can experience reality as the passage of time. That light travels so very quickly, compared to our experience of time, long distances of space are compressed into short intervals of our experience. Light travels 186,000 miles with every second we breath. That speed measures exactly how much slower we move through our physical existence than the instantaneous eternal of the universe beyond time that light exists within. 

Where were you when I laid the foundation of the earth?
Tell me, if you have understanding.
Who determined its measurements--surely you know!
Or who stretched the line upon it?
On what were its bases sunk,
or who laid its cornerstone,
when the morning stars sang together
and all the sons of God shouted for joy?

Job 38:4-7

Wednesday, November 13, 2013

Beyond quantum physics? Needed, a new Einstein

I've been thinking about consciousness and quantum reality for some years now.  Come to a few conclusions that have flowed into these ruminations:

First, seems to me that consciousness is primordial, i.e., to originate from the same source as the material universe that is the subject of modern physics.  Or to put it differently, to be unexplainable as a mere manifestation of some complex process of matter.  Consciousness is a property of the universe just as material existence appears to be.  Indeed, it may be that consciousness is prior to matter, that the ghost in the machine came before the machine.

Second, that the universe must be understood as something both eternal - the speed of light to itself is instantaneous - and immersed in time via our individual consciousness of it.  The universe is something that exists all at once in time and space.  It is we that travel through it at a speed - the flow of time - that leads us to measure light at 186,000 miles per second.  Individual consciousness seems to be attached to material processes that result from the Higgs field having given certain particles mass, that is, that slows them down from the instantaneous propagation of light and other mass-less particles.  Connected to these "slow particles," we experience time.

And now a third thought, too preliminary to call a conclusion.  That modern quantum physics while powerful and beautiful, is somehow fundamentally wrong.  Quantum physics is essentially a quantitative, numerical understanding of reality.  It offers probabilities and predictions flowing from a mathematical model of reality.  It has been amazingly accurate, predicting particles and properties then confirmed through experiment.  But more recently it seems that reality conforms too accurately to the standard model of physics.  The Higgs mass so far is exactly as predicted and now it seems the electron is perfectly spherical rather than dipole.  Both results appear to rule out the simplest models of super-symmetry (which already proposes more dimensions than the four we experience).   Super-symmetry is the effort to extend quantum physics into a theory of everything, accounting for all particles as well as gravity, dark mass and dark energy.

The latest news on the Higgs seems quite revealing.  Its mass (125 GeV) seems to be exactly where it should be for the universe as we know it to exist.  If it was much stronger, nothing much would form beyond hydrogen and helium because the particles that make them up would be so tightly bound that heavier elements - and us - couldn't form.  If it was much weaker, nothing could hang together and yet again, nothing much - including us - would form.  The Higgs - like Goldilock's porridge - is just right for us.  This is enough of a conundrum, why should it be just right for us?  But there also seems no reason - absent a super-symmetry explanation - for the exact value that the Higgs does have.  It seems to be a "given."

Quantum physicists still have hope.  There are more elaborate models for super-symmetry, less simple, less beautiful, more dimensions.  And some suggest that the Higgs has different values in the many multi-verses of which our universe may just be one.  So we happen to live in one with just the right value because in most of the others we could not exist.

Quantum physics is already a bit Rube-Goldberg.  The multi-verse proposal is more so.  Occam's Razor suggests there must be a simpler way.  It might be useful to again consider Einstein's dictum that "God does not play dice."  His theory of relativity did not flow from math but from a profound insight into how time and space relate.  Yes, math flows from it but relativity is an understanding of time and space as one thing and gravity as resulting from its curvature.  Quantum physics and relativity remain trains running on different tracks.  We may need a new Einstein to put everything on one.  Someone who can provide a deeper insight into why the universe is the way it is rather than look to mathematics to explain everything.

Sunday, September 15, 2013

Moments in Time and Consciousness

Attended the symphony today.  Instrumental music does not hold my attention as well as a play -- especially Shakespeare -- would.  I enjoyed the program but without words (lyrics), it didn't pin down my thoughts.  So they just wandered.

I wondered about exactly why I could not focus on the assembly of notes as I would on an assembly of words.  That made me think about just how these notes add up to music anyway.  The basic length of time in a conscious moment must be long enough for a series of notes to be assembled in the mind into a bit of music.  If we only perceived note by note -- or word by word for that matter -- we'd never make sense of anything.  The basic unit of conscious perception apparently is 2-3 seconds. Our now is this long.  Short term memory -- what is held in consciousness readily available as context for each moment -- is some 10-15 seconds.  We can perceive a much denser reality in each moment than simply one "thing."  Events can enter our consciousness that linger only some 40 milliseconds.  Indeed, each note is made up from a number of vibrations in the air and a symphony has lots of instruments making each note.  So each conscious moment is a highly sampled chunk of passing time.  The point is, however, not this but the apparent fact that our consciousness grasps this moment in its entirety.  It spans the stream of quantized time.  (The smallest unit of time is the Planck time, 5.39x10 to the -44th seconds.)  Consciousness seems to exist outside the flow of time.  We do not observe, think, exist in time but somehow alongside it.  The "ghost" in our machine provides a stage large enough for an assembly of actors to play their parts so that we can experience each moment of the world.

Saturday, June 29, 2013

The Higgs and Time


It's coming up on a year now since the confirmation of the Higgs particle and field. This was an exciting reaffirmation of the Standard Model of modern particle physics. But after a year of refining measurements, it seems the version of the Higgs found fits too well with the current model and offers no hint of any unexpected strangeness that could lead physicists to further insights and discoveries. The Higgs mass has been determined to be 125.7 GeV (gigaelectronvolts). Quite remarkable measurement but one that agrees so perfectly with the Standard Model that it leaves little room for current theories that tried to go beyond it to a more unified physics. Most varieties of supersymmetry and string theory – the simpler, more beautiful ones that physicists prefer – cannot meet the constraints imposed by the Higgs value. The current model cannot account for gravity or relativity and can't explain dark matter or dark energy. This means that while it can explain very well 5% of the universe, it cannot say a thing about the remaining 95%.

But it may be even more interesting to ponder the fact that the particle that gives other particles mass also has a mass. The Higgs field interacts with some particles (the quarks) and gives them mass while others (neutrinos and photons) are lightly or un-affected and have little or no mass. But if the Higgs interaction gives mass, what gives mass to the Higgs? This is another of the strange places that our modern science leads us. (Are you watching St. Thomas?)

Mass may also be at the root of time. Things with mass cannot travel at the speed of light and therefore exist immersed in time. Things without mass do travel at light speed and therefore are not subject to time. It's as if mass is really a measurement of the degree to which stuff is trapped in time, separated out of what would otherwise be an eternal now. Or to put it another way, introducing mass is a way to throw things out of heaven and down to earth?

Thursday, May 2, 2013

Deep Time


Went walking today through the nearby woods. As I've been watching a Nova series on the evolution of life as shown in Australia, I started thinking about deep time. Actually, I started thinking about trees and green plants, as I was surrounded by them. And about an image from that TV show showing what the first land plants must have looked like 475 million years ago. The were like simple, tiny mosses and lichens. In the time since, they've become all the plants we see today. 

Reconstruction of Cooksonia


The earth – and solar system – are some 4.6 billion years old. The age of the universe, according to the latest information from the Planck satellite, is around 13.8 billion. The most simple forms of life on earth go back at least 2 billion years. The Ginko tree is 200 million years old. What do these numbers mean to us? We have become used to reading about hundreds of billions and even trillions of dollars so we feel comfortable, perhaps, with thinking of just a few billion here and there. But look at a forest and think about the time it took to make it what we see. Read anything about the latest discoveries of our DNA and how the supposedly “junk” part actually helps orchestrate a vast and complex dance of proteins that make us what we are. Or about the complexity of the human brain, only a million or so years old. How long did it take from the first stirrings of life – tiny bits even without cell walls – to everything alive we see? Each change taking countless generations of random mutation and natural selection. Stare down that long hallway home and that is deep time.

Go further back to that Big Bang of 13.8 billion years ago. At the first moment, everything was the same burst of energy. Light didn't escape into space for over 300,000 years. But within the tiniest part of one second, the Higgs Field manifested and gave form to the elementary particles of the universe. Over the next billions of years, the energy and matter of the universe cooled and condensed into atoms, molecules, stars, galaxies and us. If we define life as that which exists and changes, the universe has been alive since the beginning, evolving complexity and becoming so many things. Look down that hallway, to the light at the bedroom door and that is deep time.

Thursday, February 7, 2013

Quantum Being


Reading in La Roy Ladurie's excellent study of the people of Montaillou, came across his observation on the musings of these 14th century peasants on freedom of will, do we have it or not? Began thinking of this question in light of my musings on the speed of consciousness. I had suggested that the speed of light is actually a measure of time, the time it takes us to leap from one moment of existence to the next. Light itself has no speed since at its "speed" as we measure it, time does not exist. Light relative to itself is everywhere it will be at the same moment. The universe it illuminates is therefore that which exists across all time at once, the universe as an eternal whole. Our consciousness – embedded in matter and not traveling as light – experiences time and sees light crawl along at so much slower than infinite speed.

Could freedom of will exist if a timeless universe also exists? If everything that has happened, is happening and will happen “already” exists in the same instant of creation in the Big Bang, what could be new? Are we conscious beings just crawling along lines that already exist, just following what is already fated to happen?

Being is an interesting word. It can be both verb and noun. I can be something, I can be being sad or happy. I can have a state of being, we can talk of human and supreme beings or even alien beings. Being is simply the condition of existing, of having existence. But does a rock have being? It does exist but would we say that a rock is being anything. Even just being a rock? Being implies something more, it suggests a subjective agent, someone who is being. Only something that is being could also be conscious. Consciousness is the awareness of a being. The speed of time is the pace of a beings movement through moments.

Back to freedom of will. We certainly feel, at least some times, that we have it. Life can be so complicated with so many random seeming events and difficult choices to make that it is hard to believe that it has all already been written. Sure, sometimes it seems we have no choice but to have done what we have done but in reality at each moment, we can decide among almost anything. How to square this with a relativistic universe in which the true speed of light is instantaneous and in which everything has already happened?

What if being is quantum, both particle and wave? Each of us are particles. We move through a material universe with time. We are attached to particular assemblages of matter we call bodies. We observe and act within the time-bound material world and with our wonderfully complex brains our consciousness blossoms into self-awareness and thought. Being also exists as a wave. We would not necessarily be able to understand that, as such being – accompanied by an experience of everything at once – is not easy to grasp. But such being – being beyond time – would not become aware of the particles of being before (or after) they acted because before and after would not exist. In other words, there is no text for us to follow, no “fate” which limits or determines our actions, because what we do can be known only as we do it. If the eternal, timeless universe is one conscious thought of being, it is nothing but what we particular beings immersed in time have made of it. We collapse the wave function.

Just a thought.

Tuesday, January 29, 2013

The Speed of Consciousness


I've been thinking about consciousness and reality for many years now and have come to believe that the most reasonable hypothesis is that reality is intimately related to consciousness and that consciousness is at least as primordial as matter and energy. Along the way, I've imagined the universe from the point of view of a surfer riding a photon created in the Big Bang. Because at the speed of light time stops, that “surfer” will be everywhere the photon will ever be in the same instant. From that vantage point, time does not exist and one can imagine the universe, from its moment of creation to its end, as a single crystal containing all of spacetime.

Today I was wondering about the speed of light and what exactly it means. One of the odd things about the speed of light is its value, 186000 miles per second. Why is it exactly that and what does it mean that light has a “speed” when, from the point of view of light, it is instantaneous. Perhaps the speed of light is not its speed at all but rather the speed of time? We experience time as a wave, passing from past to future with its crest being the present moment, our now. I've been reading Montaillou – about the life of a village in southern France in the early 14th Century – and felt myself looking through a portal into the lives of people far away in time, in many ways so different, but also real breathing humans just like us. Of course, when these people were alive – when they were riding the crest of time – theirs' was now. We now ride the wave but it will continue beyond us. Perhaps it is time itself that moves through the crystal universe? We see light moving at some speed only because that is the speed with which time can record its own passage.

It may seem strange to think of time moving with some speed. Whether spacetime is quantum or analog is now much in debate within physics, as well as what the smallest moment of time or unit of space may be. But according to relativity, the speed of light is both a measurement of space and time. The total distance between two points in spacetime must be conserved within the limits of the speed of light. Between two objects at rest to each other, the distance is almost entirely one of space because their speed relative to each other is functionally zero. Two objects moving relative to each other at some speed will have part of their distance in space and part in time. At rest or at low speeds, the distance in time may be negligible. But an extreme example is the case of the two twins. One twin stays at home on earth and the other travels to a nearby star and back at the speed of light. At the speed of light, the distance of the trip is experienced mostly as time. When the twin returns to the spot where he left, he has barely aged while his twin is an old man. What is being measured by the “speed of light” is really the relationship of time and space.

What is it that is traveling at the speed of light? It's not really time but our awareness of the distance traveled within spacetime. The speed of light may actually be the speed of consciousness. By this I mean the speed of our crest of awareness through the timeless, eternal crystal universe. Whatever consciousness caused the Big Bang, determined the value of the Higgs boson and the parameters of physical reality, and dumped itself into that reality may have wanted a long vacation. At the “speed of light” – really the speed of the wave of consciousness that sweeps through creation – the lifetime of the expanding universe (expanding due to dark energy) should be counted in tens of billions of years. An infinite string of nows flung like pearls upon the wine dark sea.

Saturday, April 7, 2012

Biking at the Speed of Light

Took a long bike ride yesterday from Northwest Washington to Needwood Lake in Rockville.  Fifty miles round-trip in just over four hours.  On the way back, it occurred to me that after a certain point, time had been suspended for me.  Each moment was part of the next and the whole ride was as one unified experience, one moment in time.  Each point I had passed was "just now" no matter how many miles had speed under my wheels since.

This doesn't happen on my shorter bike rides but seems to kick in after 15 miles or so.  Einstein explained that at the speed of light, time stops.  It had stopped for me at a considerably slower pace.

Maybe this is how to unify quantum physics and relativity?  For quantum physics, reality is subjective in the sense that its many possibilities don't become one thing until observed.  Einstein thought of his science as objective.  The speed of light is the same everywhere, independent of the observer.  But time is experienced subjectively.  It passes slow or fast depending on how we feel it.  And biking at our speed of light can suspend our experience of time entirely.  Time too doesn't become anything specific until we observe it.

Friday, April 22, 2011

Eternal

To be eternal is to exist no where, in no time.

Sunday, July 12, 2009

Lost Human Time

With everything we know today about human prehistory, seems safe to say we have been around for a long time, in our terms. A couple of million years evolving into Homo. Then some 150-200 thousand years ago, some crucial mutations occurred and the consciousness of a very capable ape – homo erectus/neanderthalis – was able to climb to the next level -- Homo sapiens sapiens (us). Over the next thousands of years language evolved gradually giving consciousness the tools to understand and master the world. Eventually those groups with the most capable languages established local supremacy. 8000-9000 years ago, people began farming in the Crescent. 7500 years ago it came together in Sumer where language became writing and farming became agriculture and both together became empire. Sumer lasted 15 centuries. People like us hunted in Europe for 30 thousand years before the first farmers. Think about the centuries of fully human life lost to us. What was that like? What might have risen, been lived and then disappeared lost in the mists of the past?