In reply to AmericanGypsie for the comment given several posts ago:
Grey dust has been eliminated by the observation of the magnitude/redshift relation for very distant SNe Ia supernovae. Their spectra, brightness and redshifts are all concordant with calculated great distances.
Interstellar gas will not cause redshifts unless it is ionized, like a plasma. But, the existence of a plasma would eminate from all distances so that the distribution of locations of plasma emmision sources would not match the observed emmision source locations. And, the CMB power law (a type of frequency distribution) across the sky and across the spectrum, would not match the observed CMB (you know, that pretty sky chart showing the red and blue patches got from the WMAP satellite).
The disparity between the radius, radius of curvature or Hubble radius derived from H naught and the the magnitude of the scale factor got from application of the Friedmann equations is very large. This lack of agreement stems from the fact that the Friedmann equations calculate the scale factor of the entire universe, not just the "observable" universe.
The inverse of H naught gives the Hubble radius or the approximate size of the observable universe (U). There are other ways to calculate this dimension depending on the type of observation that is made. But, they are in good agreement. For instance, the size of U is a bit smaller because the value of H naught that is obtained for X-rays by the Chandra X-Ray Observatory is a bit larger (77 km/s/Mpc) than the value for H naught got from ancient SNe Ia (72 km/s/Mpc). Brightness measurements alone indicated the universe is very large and very old.
X-ray redshifts will be very different from microwave redshifts and would occur by different mechanisms if it was caused by interferences and not by virgin emmision from the the time of "recombination" after the Big Bang.
It's funny that you suggest scientists may be Christians in disguise. They are mostly atheists or agnostics.
The Plasma panacea that has been proposed to account for everything is being pushed by Fundamentalist Christians as indicating that U is much younger, say, about 6,000 years old. They want to debunk the Big Bang and all it entails because it indicates age in the billions of years.
They will never succeed and they should give up.
Your comments are very good and I appreciate the thought that you have obviously given to this issue. If only certain scientists would give it the same.
However, I surely would not call general or special relativity mere scientific popularism. The Principles of Relativity are the second best validated pillars of all science.
The first best validated Principles are those regarding quantum mechanics and particle physics' quantum chromodynamics (the God Particle type of a merger between quantum science and relativity).
Because popular books have been written does not mean that they have no serious basis just because they are popular.
Showing posts with label grey dust. Show all posts
Showing posts with label grey dust. Show all posts
Monday, June 21, 2010
Monday, April 30, 2007
Dark Energy Debunked Still More
Re: Dark Energy Debunked
O.K. Suppose the expansion of the universe is accelerating against all previous hypotheses that it should be decelerating. How could it be?
Well, Dark Energy is one explanation. Dark Energy is supposed to act, physically and mathematically, like negative pressure. It is as if the universe was immersed in a big vacuum, except that it is already a vacuum. But, it may be what is called a "false vacuum" with many more quantum entities seething just below the level of detectability (without huge accelerators probing muon decay, that is).
The true vacuum would act on our false vacuum universe the same way that a vacuum would act on a balloon, and, as the membrane got thinner, it would weaken. This is because the tension or overall force had surpassed the elastic limit and the expansion rate of the balloon would therefore accelerate. The tension seems to have surpassed the elastic limit of our universe about 9 billion years ago, it is said.
But this is just analogy. It is meaningless if it does not lead to a testable result or deduction. We cannot apply a force to the universe as a whole nor to spacetime. We cannot stretch spacetime in an experimental apparatus.
Perhaps spacetime stretches naturally as a result of the expansion that has already gone before. Then, as the receding galaxies recede faster from one another depending on their distance, it constitutes increased stretching of spacetime. As a matter of fact, the relativistic redshift is said to result from a "stretching" of spacetime.
But, I am only restating my analogy in different words (dodging or begging the question). This is not experimental or observational proof.
We need to put spactime in a sort of tensiometer to stretch it until it deforms more rapidly or else breaks. We need to find a way to rip spacetime. And hope that we do not tear a hole in the universe that will swallow us up!
This is all unproductive speculation. It would be more productive to follow the lead that this Dark Energy conclusion, reached by reductio ad absurdum, has given us. Carrying an argument to its extreme this way, to the point where an absurd contradiction occurs, is a standard method of proving logical falsehood.
Dark Energy proves itself false.
Let's work on this!
Then the calculations that indicate that the theoretic prevalence of heavier nuclei in the early universe are wrong, and the premises leading to this conclusion of too few heavy nuclei, need to be revised. Furthermore, the premises behind the interpretations of observations of too little "grey dust" that is made of such heavy nuclei (Be, B, C, N and O with traces of Mg, Al and Si) must also be wrong. There is a goldmine of research opportunity here!
Yes, scientists have made an 180 on the deceleration/acceleration trajectory of their thinking. And, yes, there could indeed be 1,000 million big bangs and other even weirder local parcels in a truly infinite universe. So, what is so special about it, even if our packet of the universe's expansion rate is accelerating. Who gives a rat's ass?
Well, we do, because we are here. And we do indeed live in a universe that just happens to have physical constants that support its existence and the existence of intelligent life. Presuming that we are indeed intelligent, that is. So, it matters to us because such conundrums fascinate. The irony is irresistible.
Another explanation of accelerating expansion is that spacetime is exploding. The negative pressure that shows up in relativistical equations is itself only relative. From the outside, looking in - even with an explosion - the pressure is negative. Just as energy is negative if it is released from the inside to the outside. The result is the same as before.
Except it is more like the original "phase change" that the "false vacuum" underwent at the time of the Big Bang. When water begins to boil, the expanding bubble drinks in more vapor at an accelerating rate because its surface area is increasing so rapidly that it ensnares more and more liquid, allowing it to turn into vapor. The false vacuum returns to its ground state, the true vacuum state, releasing energy that goes to accelerate the expansion rate. The bubble of spacetime that is our universe increases in size at an exponentially increasing rate, like a bubble of steam that grows larger so fast that it almost explodes out of the tea kettle.
These two scenarios are called the "quintessence" hypothesis and the "cosmological constant" hypothesis, respectively. Not only do we have to prove Dark Energy exists, but we have to distinguish between these two alternatives!
It would be much simpler to suppose that the premises underlying theoretical calculations and observational interpretations about the disparity between luminosity distances and redshift distances to far off type 1a supernovae are wrong.
Another alternative would be that the universe is growing. Spacetime may be reproducing itself and it is doing so at the usual exponentially increasing rate typical of a population of living organisms. The spacetime population underwent an initial accelerating increase initially (the BB), slowed down when waste products (like neutrinos) accumulated and sped up again when the volume increased sufficiently (and neutrino density decreased enough) for a new growth spurt to begin. Perhaps the conclusion should be, from this if it is true, that the universe is alive!
Gary Kent
O.K. Suppose the expansion of the universe is accelerating against all previous hypotheses that it should be decelerating. How could it be?
Well, Dark Energy is one explanation. Dark Energy is supposed to act, physically and mathematically, like negative pressure. It is as if the universe was immersed in a big vacuum, except that it is already a vacuum. But, it may be what is called a "false vacuum" with many more quantum entities seething just below the level of detectability (without huge accelerators probing muon decay, that is).
The true vacuum would act on our false vacuum universe the same way that a vacuum would act on a balloon, and, as the membrane got thinner, it would weaken. This is because the tension or overall force had surpassed the elastic limit and the expansion rate of the balloon would therefore accelerate. The tension seems to have surpassed the elastic limit of our universe about 9 billion years ago, it is said.
But this is just analogy. It is meaningless if it does not lead to a testable result or deduction. We cannot apply a force to the universe as a whole nor to spacetime. We cannot stretch spacetime in an experimental apparatus.
Perhaps spacetime stretches naturally as a result of the expansion that has already gone before. Then, as the receding galaxies recede faster from one another depending on their distance, it constitutes increased stretching of spacetime. As a matter of fact, the relativistic redshift is said to result from a "stretching" of spacetime.
But, I am only restating my analogy in different words (dodging or begging the question). This is not experimental or observational proof.
We need to put spactime in a sort of tensiometer to stretch it until it deforms more rapidly or else breaks. We need to find a way to rip spacetime. And hope that we do not tear a hole in the universe that will swallow us up!
This is all unproductive speculation. It would be more productive to follow the lead that this Dark Energy conclusion, reached by reductio ad absurdum, has given us. Carrying an argument to its extreme this way, to the point where an absurd contradiction occurs, is a standard method of proving logical falsehood.
Dark Energy proves itself false.
Let's work on this!
Then the calculations that indicate that the theoretic prevalence of heavier nuclei in the early universe are wrong, and the premises leading to this conclusion of too few heavy nuclei, need to be revised. Furthermore, the premises behind the interpretations of observations of too little "grey dust" that is made of such heavy nuclei (Be, B, C, N and O with traces of Mg, Al and Si) must also be wrong. There is a goldmine of research opportunity here!
Yes, scientists have made an 180 on the deceleration/acceleration trajectory of their thinking. And, yes, there could indeed be 1,000 million big bangs and other even weirder local parcels in a truly infinite universe. So, what is so special about it, even if our packet of the universe's expansion rate is accelerating. Who gives a rat's ass?
Well, we do, because we are here. And we do indeed live in a universe that just happens to have physical constants that support its existence and the existence of intelligent life. Presuming that we are indeed intelligent, that is. So, it matters to us because such conundrums fascinate. The irony is irresistible.
Another explanation of accelerating expansion is that spacetime is exploding. The negative pressure that shows up in relativistical equations is itself only relative. From the outside, looking in - even with an explosion - the pressure is negative. Just as energy is negative if it is released from the inside to the outside. The result is the same as before.
Except it is more like the original "phase change" that the "false vacuum" underwent at the time of the Big Bang. When water begins to boil, the expanding bubble drinks in more vapor at an accelerating rate because its surface area is increasing so rapidly that it ensnares more and more liquid, allowing it to turn into vapor. The false vacuum returns to its ground state, the true vacuum state, releasing energy that goes to accelerate the expansion rate. The bubble of spacetime that is our universe increases in size at an exponentially increasing rate, like a bubble of steam that grows larger so fast that it almost explodes out of the tea kettle.
These two scenarios are called the "quintessence" hypothesis and the "cosmological constant" hypothesis, respectively. Not only do we have to prove Dark Energy exists, but we have to distinguish between these two alternatives!
It would be much simpler to suppose that the premises underlying theoretical calculations and observational interpretations about the disparity between luminosity distances and redshift distances to far off type 1a supernovae are wrong.
Another alternative would be that the universe is growing. Spacetime may be reproducing itself and it is doing so at the usual exponentially increasing rate typical of a population of living organisms. The spacetime population underwent an initial accelerating increase initially (the BB), slowed down when waste products (like neutrinos) accumulated and sped up again when the volume increased sufficiently (and neutrino density decreased enough) for a new growth spurt to begin. Perhaps the conclusion should be, from this if it is true, that the universe is alive!
Gary Kent
Sunday, April 8, 2007
Inflationary Quantum Hot Big Bang
So many people believe the Hot Big Bang hypothesis (HBB) because there is an overwhelming amount of incontestable evidence in its favor. There will be Nobel Prizes for some investigators who were most responsible for its discovery and proof.
Those who disbelieve and diss the work that has already lead to its acceptance by the vast majority of physical scientists continually demonstrate, they truly prove well beyond any reasonable doubt, nothing more than their own ignorance!
There are at least three utterly independent lines of logic that support the Hot Big Bang hypothesis of cosmogenesis. The first is measurements of cosmic distances by redshifts, by relativistic redshifts, no less, by the way. The second is measurement of cosmological distances by means of luminosity.
If the speed of light is not constant, the only plausible objection to the redshift conclusion put forth so far, then the luminosity data acts to back the same argument. If luminosity somehow gets disqualified, the redshifts take up the burden. One has to debunk BOTH simultaneously to have a hope of knocking the HBB off its pedestal.
But wait! There is the data from at least three separate probes of the cosmic microwave background. This huge data set also suppports the HBB hypothesis. Furthermore, the very existence of the cosmic microwave background is near perfect proof of the HBB hypothesis all by itself!
There is not the chance of a snow storm in Hades to cross-off all three lines of reasoning without self-contradiction.
Specially designed spectrometers are used to measure redshifts. They may use electronics or photographic film and involve the use of prisms or diffraction gratings. They depend on measurements of wavelength.
But, on the other hand, light intensity for photometric luminosity measurements can be done with a simple photocell or it may use photographic film or light sensitive transistor sensors. The latter are arrays of a particular kind of light sensitive Charge Coupled transistor logic gate assembled as a single Device on a small silicon crystal wafer or "chip" - CCDs. The relative brightness of identifiably defined bright stars or galaxies is used to calibrate the method. It is completely independent of wavelength.
These three approaches each have interferences and weaknesses that have to be accounted for. But, they result in measurements that have been subjected to mathematical, rigorous statistical error analysis which tells the investigator how good her data is and how reliable her conclusions from it may be. This depends on an accurate assessment of where there may be certain kinds of error or inaccuracy in the data. Taken one step at a time, however, this is not so very difficult to do.
In the physical sciences, measurements that are within 95% confidence limits are the norm. This means that all subsequent measurements done in the same way will be likely to give results that deviate very far from the average only 5% of the time. Confidence limits of 98% are common.
But outright interferences are another matter. These much degrade the reliability of many astrophysical measurements. But, investigators are certain that they have identified all potential killer interferences. It would be the near impossible task of detractors to somehow reinstate them for all three lines of argument. This too must be done without self-contradiction.
But, of course, they do not do this. Instead, they rely on specious and hairbrained substitute hypotheses of their own. They prove nothing at all except the naysayers' total ignorance of the true nature and proper practical application of the scientific method.
Either kind of distance measurement results in descriptions of both nearby and very distant galaxies as receding from one another at a rather constant rate. Edwin Hubble was the first to reason that one may extrapolate from this apparently constant recession rate, called H naught or H subscript zero, to earlier times when the galaxies must have been much closer together.
But, Fred Hoyle hypothesized that this could be happening in a universe that constantly renews itself by the steady formation of new stars and galaxies through quantum fluctuations that produce new hydrogen atoms. This is called the Steady State Hypothesis (SSH).
The only real alternative, so far, to the SSH, is the HBB. This hypothesizes that by extrapolating backward in time far enough, the galaxies would have had to spring from an apparently infinitely dense, infinitely hot, single point, a singularity. We cannot comprehend what this means so, philosophically it is undesirable.
The sudden appearance of the universe as a single, ultradense point of some kind of quantum hybrid between matter and light (which would have had to be more like light) resulted in what is the misnomer of the "Hot Big Bang". This hypothetical HBB is NOT an explosion. It is the appearance of a bubble of matter/energy in a pure vacuum of spacetime somewhat similar to the phase change that occurs when water boils to form bubbles of steam.
It is quite well established that a "pure" vacuum is anything but empty. Quantum mechanics is the best, most fully validated principle or set of principles in all of science. Experiments are going on all the time in hundreds of laboratories all around the world that have yet to find any discrepancy. We are constantly learning new things about it, however.
Because of the spectacular success of quantum mechanics, it is quite plausible that the universe resulted from a quantum fluctuation in an otherwise empty vacuum of spacetime. This notion has further implications too. For instance, formation of a long lived virtual particle means production by a high energy state vacuum called a "false vacuum". Virtual particles are ordinarily produced in particle/antiparticle pairs that self-annihilate almost immediately. The main way that virtual particles produce real particles that last a substantially long time is by means of their location very very near the event horizon of a black hole. This implies that the observable universe may be part of a much larger polydimensional surface of an even larger black hole that is undergoing expansion.
The potential observation of some sort of direct evidence for this could help solve the problem of missing mass without invoking dark energy. The data seem to imply that the total mass inventory of the full universe may be many times the experimentally verified mass inventory for the observable universe.
By the way, Fred Hoyle's SSH has been shown to be false. For one thing, the power law or energy distribution that the CMB would have to follow would be all wrong.
There is a much higher probability that a "particle" or matter/energy bubble will appear by quantum fluctuation in a very very high energy state than at a lower one by mere statistical chance. So, it is plausible that the universe began in such an extremely energetic condition that it enclosed the stupendous quantity of matter/energy that we see today.
Quantum particles are often characterizable as single points whose exact location cannot be well known. Still, they are describable as points. Statistically, this is not a problem. But, we have only one universe to study. It is mathematically incorrect to apply probabilistic principles to individual events. So, we have a subtle philosophical problem here.
Nonetheless, I think that the HBB has a lot going for it and Alan Guth has solved the most serious objections to the idea with his inflationary universe scenario. Philosophically, the inflationary HBB is now the most tenable scenario of cosmogenesis.
The universe did not have to arise from an infinitely dense and energetic origin, only from an exceedingly high and intense one. There is no objection from a religious perspective either.
Cosmogony and cosmogenesis cannot be discussed adequately and our brothers' question cannot be answered fully unless we include a word about philosophy and the religious perspective on this question. Only an intolerant atheist would disagree.
This thread cannot and should not be restricted to atheists!
God said (it was written into the nature of spacetime) "Let there be light!". And there was light. Or a light-like "stuff" that begat the whole rest of creation. It is written that God spoke. His Word was His Son and vice versa, as St. John declared. We share in the nature of the Son of God, therefore in the nature of God Himself.
We are Responsible, as God is Responsible for the existence of spacetime and for the existence of existence itself. Some philosophical concepts can indeed be referred to themselves, after all.
This is the real metaphorical significance of Jesus' whole message! You can indeed believe in theistic evolution of both life and the universe itself. Christians have nothing to fear from modern science as long as they keep an open mind.
http://neocosmology.blogspot.com/
http://neochristianity.blogspot.com/
http://hometown.aol.com/nuchristianrabbi/
http://www.luckyboyproductions.org/ Available May, 2007.
I hope that it may be judged that this comment has enough "redeeming social and intellectual importance" that these citations to my websites may be forgiven. They are not advertisements. I do not sell anything.
Gary Kent
Those who disbelieve and diss the work that has already lead to its acceptance by the vast majority of physical scientists continually demonstrate, they truly prove well beyond any reasonable doubt, nothing more than their own ignorance!
There are at least three utterly independent lines of logic that support the Hot Big Bang hypothesis of cosmogenesis. The first is measurements of cosmic distances by redshifts, by relativistic redshifts, no less, by the way. The second is measurement of cosmological distances by means of luminosity.
If the speed of light is not constant, the only plausible objection to the redshift conclusion put forth so far, then the luminosity data acts to back the same argument. If luminosity somehow gets disqualified, the redshifts take up the burden. One has to debunk BOTH simultaneously to have a hope of knocking the HBB off its pedestal.
But wait! There is the data from at least three separate probes of the cosmic microwave background. This huge data set also suppports the HBB hypothesis. Furthermore, the very existence of the cosmic microwave background is near perfect proof of the HBB hypothesis all by itself!
There is not the chance of a snow storm in Hades to cross-off all three lines of reasoning without self-contradiction.
Specially designed spectrometers are used to measure redshifts. They may use electronics or photographic film and involve the use of prisms or diffraction gratings. They depend on measurements of wavelength.
But, on the other hand, light intensity for photometric luminosity measurements can be done with a simple photocell or it may use photographic film or light sensitive transistor sensors. The latter are arrays of a particular kind of light sensitive Charge Coupled transistor logic gate assembled as a single Device on a small silicon crystal wafer or "chip" - CCDs. The relative brightness of identifiably defined bright stars or galaxies is used to calibrate the method. It is completely independent of wavelength.
These three approaches each have interferences and weaknesses that have to be accounted for. But, they result in measurements that have been subjected to mathematical, rigorous statistical error analysis which tells the investigator how good her data is and how reliable her conclusions from it may be. This depends on an accurate assessment of where there may be certain kinds of error or inaccuracy in the data. Taken one step at a time, however, this is not so very difficult to do.
In the physical sciences, measurements that are within 95% confidence limits are the norm. This means that all subsequent measurements done in the same way will be likely to give results that deviate very far from the average only 5% of the time. Confidence limits of 98% are common.
But outright interferences are another matter. These much degrade the reliability of many astrophysical measurements. But, investigators are certain that they have identified all potential killer interferences. It would be the near impossible task of detractors to somehow reinstate them for all three lines of argument. This too must be done without self-contradiction.
But, of course, they do not do this. Instead, they rely on specious and hairbrained substitute hypotheses of their own. They prove nothing at all except the naysayers' total ignorance of the true nature and proper practical application of the scientific method.
Either kind of distance measurement results in descriptions of both nearby and very distant galaxies as receding from one another at a rather constant rate. Edwin Hubble was the first to reason that one may extrapolate from this apparently constant recession rate, called H naught or H subscript zero, to earlier times when the galaxies must have been much closer together.
But, Fred Hoyle hypothesized that this could be happening in a universe that constantly renews itself by the steady formation of new stars and galaxies through quantum fluctuations that produce new hydrogen atoms. This is called the Steady State Hypothesis (SSH).
The only real alternative, so far, to the SSH, is the HBB. This hypothesizes that by extrapolating backward in time far enough, the galaxies would have had to spring from an apparently infinitely dense, infinitely hot, single point, a singularity. We cannot comprehend what this means so, philosophically it is undesirable.
The sudden appearance of the universe as a single, ultradense point of some kind of quantum hybrid between matter and light (which would have had to be more like light) resulted in what is the misnomer of the "Hot Big Bang". This hypothetical HBB is NOT an explosion. It is the appearance of a bubble of matter/energy in a pure vacuum of spacetime somewhat similar to the phase change that occurs when water boils to form bubbles of steam.
It is quite well established that a "pure" vacuum is anything but empty. Quantum mechanics is the best, most fully validated principle or set of principles in all of science. Experiments are going on all the time in hundreds of laboratories all around the world that have yet to find any discrepancy. We are constantly learning new things about it, however.
Because of the spectacular success of quantum mechanics, it is quite plausible that the universe resulted from a quantum fluctuation in an otherwise empty vacuum of spacetime. This notion has further implications too. For instance, formation of a long lived virtual particle means production by a high energy state vacuum called a "false vacuum". Virtual particles are ordinarily produced in particle/antiparticle pairs that self-annihilate almost immediately. The main way that virtual particles produce real particles that last a substantially long time is by means of their location very very near the event horizon of a black hole. This implies that the observable universe may be part of a much larger polydimensional surface of an even larger black hole that is undergoing expansion.
The potential observation of some sort of direct evidence for this could help solve the problem of missing mass without invoking dark energy. The data seem to imply that the total mass inventory of the full universe may be many times the experimentally verified mass inventory for the observable universe.
By the way, Fred Hoyle's SSH has been shown to be false. For one thing, the power law or energy distribution that the CMB would have to follow would be all wrong.
There is a much higher probability that a "particle" or matter/energy bubble will appear by quantum fluctuation in a very very high energy state than at a lower one by mere statistical chance. So, it is plausible that the universe began in such an extremely energetic condition that it enclosed the stupendous quantity of matter/energy that we see today.
Quantum particles are often characterizable as single points whose exact location cannot be well known. Still, they are describable as points. Statistically, this is not a problem. But, we have only one universe to study. It is mathematically incorrect to apply probabilistic principles to individual events. So, we have a subtle philosophical problem here.
Nonetheless, I think that the HBB has a lot going for it and Alan Guth has solved the most serious objections to the idea with his inflationary universe scenario. Philosophically, the inflationary HBB is now the most tenable scenario of cosmogenesis.
The universe did not have to arise from an infinitely dense and energetic origin, only from an exceedingly high and intense one. There is no objection from a religious perspective either.
Cosmogony and cosmogenesis cannot be discussed adequately and our brothers' question cannot be answered fully unless we include a word about philosophy and the religious perspective on this question. Only an intolerant atheist would disagree.
This thread cannot and should not be restricted to atheists!
God said (it was written into the nature of spacetime) "Let there be light!". And there was light. Or a light-like "stuff" that begat the whole rest of creation. It is written that God spoke. His Word was His Son and vice versa, as St. John declared. We share in the nature of the Son of God, therefore in the nature of God Himself.
We are Responsible, as God is Responsible for the existence of spacetime and for the existence of existence itself. Some philosophical concepts can indeed be referred to themselves, after all.
This is the real metaphorical significance of Jesus' whole message! You can indeed believe in theistic evolution of both life and the universe itself. Christians have nothing to fear from modern science as long as they keep an open mind.
http://neocosmology.blogspot.com/
http://neochristianity.blogspot.com/
http://hometown.aol.com/nuchristianrabbi/
http://www.luckyboyproductions.org/ Available May, 2007.
I hope that it may be judged that this comment has enough "redeeming social and intellectual importance" that these citations to my websites may be forgiven. They are not advertisements. I do not sell anything.
Gary Kent
Subscribe to:
Posts (Atom)
