Posts Tagged ‘Principle Of Relativity’

Earth’s Core Is Younger Than Its Crust

May 30, 2016

Inner parts of the Earth are younger than the surface by an appreciable amount. Richard Feynman made this point first. But he underestimated the effect by a factor of 100 times! As the Danes who just discovered that put it: “The pedagogical value of this discussion is to show students that any number or observation, no matter who brought it forward, must be critically examined”.

Local Time is a theory invented by Poincaré, to make sense of Lorentz’s work. Local Time became famous when Einstein, a German, advertised it, and was himself advertised by Kaiser nationalists such as Max Planck. A gravitational field slows down (Local) Time. (The proof is easy.)

Notice that the core itself has no gravitation. So actually the slowing down of light clocks is a function of depth. Local time really slows down.

Local time, as given by light clocks, has to be the same as local time given by the weak force (radioactive decay). If not, one could tell absolute motion easily from the inside the bowels of the ship lab. That would contradict the Principle of Relativity.

I have argued for decades that the Cosmic Background Radiation gave an absolute frame. However, the situation is a bit more subtle than that. Galileo argued that a laboratory in the bowels of a ship cannot provide an indication of motion (as long as one does look outside!)

I recently dug around and found the argument came initially from bishop Oresme, a student and collaborator of Buridan. Both were major philosophers, mathematicians and physicists of the Fourteenth Century in Paris. Oresme considered the principle of relativity self-obvious (to “intelligent” persons). However that was as long as one was in the bowels of a ship, and not looking at heavenly bodies. Oresme explicitly said. Because Oresme argued the diurnal motion of Earth around itself could not be detected inside a lab (many centuries later, five centuries later, more exactly, that turned out to be false: consider Foucault’s pendulum, 1851 CE).

So can we find a sort of Foucault pendulum for absolute linear motion? General Relativity insists on what Newton already knew: the Earth falls around the Sun. Can we detect this rotation inside a mine, 2 kilometers down? In theory, yes: the CBR will slow down the Earth sometimes, and push it, at other times. A supersensitive accelerometer could detect that.

Nor can we do away with the likes of a CBR like reference frame. The simple fact that there are galactic clusters all around and they generate the gravitational field defines a state of rest relative to it.

The formalism of Quantum Physics already has an absolute time for all to see. That absolute time is what enables the non-local effects.

So is physics finished? No. Will the philosophical approach help? Of course (roll over, Feynman, go back to your faulty computations!). It took 32 years for physicists to realize that the potential was on the right side of the De Broglie-Schrodinger equation of 1924… That provided immediately with (the idea for) an experimental confirmation, the Bohm-Aharanov effect…
Patrice Ayme’

ianmillerblog

There was a rather interesting announcement recently: three Danes calculated that the centre of the earth is 2.5 years younger than the crust ( U I Uggerhøj et al. The young centre of the Earth, European Journal of Physics (2016). DOI: 10.1088/0143-0807/37/3/035602 ). The concept is that from general relativity, the gravitational field of earth warps the fabric of space-time, thus slowing down time. This asserts that space-time is something more than a calculating aid and it brings up a certain logic problem. First, what is time and how do we measure it? The usual answer to the question or measurement is that we use a clock, and a clock is anything that has a change over a predictable period of time, as determined by some reference clock. One entity that can be used as a clock is radioactive decay and according to general relativity, that clock at the core…

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Poincaré: LOCAL TIME Implies MASS = ENERGY

March 29, 2016

Historically three functions were attributed to time: simultaneity, synchronization and duration. Time became important in physics even before Galileo analyzed how gravity could be diluted by using a slope. Middle Age mathematicians made the first differential calculus computations using time, two centuries before Fermat established calculus.

Newton used calculus for his detailed theory of gravitation. However Isaac thought his own theory made no sense. The problem was that gravity was supposed to act instantaneously at a distance. Isaac thought that it is inconceivable that inanimate Matter should, without the Mediation of something else, which is not material, operate upon, and affect other matter without mutual Contact…That Gravity should be innate, inherent and essential to Matter, so that one body may act upon another at a distance thro’ a Vacuum, without the Mediation of any thing else, by and through which their Action and Force may be conveyed from one to another, is to me so great an Absurdity that I believe no Man who has in philosophical Matters a competent Faculty of thinking can ever fall into it.”

— Isaac Newton, Letters to Bentley, 1692/3

Poincaré: Time Is Local, MASS = ENERGY, Yet Relativity Is Not Fully Relative

Poincaré: Time Is Local, MASS = ENERGY, Yet Relativity Is Not Fully Relative

[The picture actually alludes to a completely different work of Poincaré, his discovery that qualitative methods in non solvable differential equations produced results where exact differential equations a la Newton did not: in particular, Poincare’s recurrence theorem… Useful in astronomy.]

Newton’s theory depended crucially on an absolute, universal time: thus the gravity force vector could always point to the center of (the) mass (exerting the gravitational force).

However the wrapping up of the electromagnetic equations by Maxwell showed that light was electromagnetic field travelling at speed c. C was universal. And independent of any “rest frame”. After thinking about the problem for twenty years, Lorentz discovered that, for electromagnetic phenomena to stay the same in a moving frame, one had to introduce what Poincaré called a “Local Time”. Poincaré then pointed out that there was no absolute rest relative to an “ether”, all one could do was to analyze the motion of matter relative to matter.

Then Poincaré thought some more for five years, and published in 1900, in the major Dutch physics Journal, that electromagnetic field retardation and its violation of Newton’s Third Law (Action equals reaction) could be resolved by attributing the inertial mass E/cc to the electromagnetic field.

(Mass = energy was attributed to a number of second order German physicists for Francophobic and nationalistic reasons, and the notion is repeated to this day by ignorant parrots; that would be sort of funny, if it did not distort not just the history of physics, but even the understanding of physics, as the parrots tend to not have as deep an understanding the underlying concepts).

“The principle of relativity, according to which the laws of physical phenomena must be the same for a stationary observer as for one carried along in a uniform motion of translation, so that we have no means, and can have none, of determining whether or not we are being carried along in such a motion… From all these results, if they were to be confirmed, would issue a wholly new mechanics which would be characterized above all by this fact, that there could be no velocity greater than that of light, any more than a temperature below that of absolute zero. For an observer, participating himself in a motion of translation of which he has no suspicion, no apparent velocity could surpass that of light, and this would be a contradiction, unless one recalls the fact that this observer does not use the same sort of timepiece as that used by a stationary observer, but rather a watch giving the “local time.[..] Perhaps, too, we shall have to construct an entirely new mechanics that we only succeed in catching a glimpse of, where, inertia increasing with the velocity, the velocity of light would become an impassable limit. The ordinary mechanics, more simple, would remain a first approximation, since it would be true for velocities not too great, so that the old dynamics would still be found under the new” [Poincaré, 1904.]

So after Poincaré’s work, what was the situation? Time is local (yet clocks could be synchronized at a distance), Galilean relativity could be extended to electromagnetism as long as mass = energy.

Are we further along today?

Poincaré kept a distinction between “apparent time” and “ether” given time. Einstein’s variation of the theory does not preserve this distinction (and that makes it false, ha ha ha). I will not go into the details here, as it would be pure research of the sort that 99% of theoretical physicists are unwilling to consider (some other day, in simple words). I am not trying to spite Einstein, long my preferred physicist (no more, though, he has exhausted my patience with vindictive plagiarism, in particular against Poincaré and Karl Popper, let alone abandoning his little daughter). Actually Einstein admitted there was some sort of ether: …”we may say that according to the general theory of relativity space is endowed with physical qualities; in this sense, therefore, there exists an ether. According to the general theory of relativity space without ether is unthinkable.” [Einstein, 1920.]

But there is much worse: we now know that Quantum Physics ignores Local Time. Quantum Physics brings back the instantaneous interaction at a distance which repulsed Newton. (At least, it appears instantaneous experimentally, so far, and it is certainly instantaneous in the existing Quantum formalism, which, amusingly, is in the same exact situation as Newtonian Physics: the Quantum as we know it today, cannot function without that instantaneous Quantum Interaction.

Whatever happens next, only one thing is clear; those who claim physics has been figured out, know very little, and should be advised to shut up, lest their  egregious statements confuse the public about the scientific method.

Patrice Ayme’

***

***

E = mcc? Here is my take on it:

The simplest idea to get to Energy = Mass, is that light has momentum (experiments and Poynting’s work on electromagnetism). Integrated (that is summed up) momentum transferred is… energy.

But also, upon emission of light, a recoil appears (Newton’s Third Law, and that is what it means that light has momentum). To keep the center of mass where it was prior (Buridan’s law, aka “Newton’s” First/Second Law), light needs to carry inertial mass (also gravitational, according to the equivalence principle)… Poincaré, no fool, has got to have been teaching that at the Sorbonne in 1899 (when he first publicized E = mcc)…

TIME DILATION

June 17, 2014

No subject is more important than time. Time rules the universe, thus wisdom. Just announced research breakthroughs in rejuvenation (at least in cells and mice) give hope to those who view aging as the disease it is. Eternal life, will, no doubt, make higher wisdom more precious.

About a century ago, the Theory of Relativity caused a huge ruckus, mostly because of its prediction of TIME DILATION. Now we got used to time extension from fast motion: it has been thoroughly checked experimentally, big time. Yet, it is important to understand that Time Dilation is NEARLY A TRIVIAL OBSERVATION, once the correct axiomatics is in.

Light Clock, Universal Clock

Light Clock, Universal Clock

[The picture above, going back conceptually to the Michelson-Morley experiment of 1887 CE, also basically holds during acceleration: then the straight lines just become stretchy and curvaceous!]

Having the correct axiomatics is crucial, for further advances in philosophy and physics. Correct axiomatics allows to observe the true facts and the important theorems. Axiomatics is the metalogic: it is more important than the logic it gives rise to.

In both philosophy and physics, the understanding of time, even by supposedly top notch researchers, seems to be lagging.

When a train passes by at speed v, the time therein does not just appear slow, it is slow. It is easy to understand why. At least, so I claim, and I will demonstrate.

Suppose Alice and Sophia are on the ground (visualize a flat Earth of infinite extent, to simplify the context). They measure time, each with their personal light clock.

A light clock is an idealized clock consisting of two mirrors, between which light, a bunch of photons, is reflected. One simply counts the beat of reflecting photons, and call that time. The light clock is a time constructor. (See: Constructing Time, for the basics. Light Clocks are the conceptually simplest of the four known types of clocks.)

By letting some of the light leak, my style of light clock comes with a pulsating tail of light.

(It could be some sort of permanently pumped laser, at a fixed frequency, f. Then all can see the photon beats pulsate outside.)

Let Sophia take off for space. What does that mean? She accelerates (say with constant acceleration A). The light tail of her clock elongates, stretches. From Alice’s viewpoint, the beat of Sophia’s light clock goes down.

Why? Count the beats of Sophia’s clock: S0, S1, S2, S3, … Sn, S(n+1), … With S0 being take-off. The corresponding beats of Alice’s clock are every dt, with A0 = S0. When S1 occurs, Sophia’s clock is at distance (1/2) a(dt)^2. So the reception of the beat of Sophia’s clock is not instantaneous: it is delayed by the time light takes to cover that distance, namely:

(1/2c) a(dt)^2.

The situation is even worse with the next beat, at time 2(dt).

And so on and so forth. So, from Alice’s point of view, Sophia clock slows down ever more, as long as Sophia is accelerating away at acceleration A.

What happens when Alice looks within Sophia’s spaceship? The same situation exactly. As the photon bunch comes down to meet the on-rushing mirror, and it meets it early, the mirror it came from recesses, by as much (we assume everything in Sophia’s spaceship is hyper rigid). So when the photon bunch catches up with the starting mirror, to complete the beat, it has to cover double that, PLUS the supplementary distance covered by the initial mirror, due to the on-going acceleration.

So Sophia’s time, as observed by Alice, is slow and getting ever slower, as long as the acceleration A persists.

When the acceleration stops, Sophia’s time stops slowing down. It is now just slow. By as much as it slowed down during the acceleration (that’s why the usual approach of Relativity textbooks is dumb: they neglect the accelerative process, so students cannot understand how the slowing down arose).

Once Sophia has reached her cruise speed V, a precise computation (found in all serious relativity books) involving only the speed V, shows  that Sophia’s time is Alice’s time, multiplied by:

Square Root (1- VV/cc).

The effect has to do with the light in the moving frame having to cover a distance than is ever greater, the greater the speed V of the moving clock. The mathematics is Babylonian level (Pythagoras theorem was discovered earlier, in Egypt, and Babylon).

So when V approaches c, Sophia’s time slows down enormously.

The effect has been checked on elementary particles that decay after a set time. When they travel very fast, their lifespan augments by:

1/square root(1-VV/cc).

An arbitrarily large number as V approaches c.

***

Some may wonder: if Time Dilation is such a triviality, what the big noise about it, and where is the “Relativity” in all this?

Relativity” is hidden below the surface in two ways:

1.In the fact that Henri Poincaré’ s law of the constancy of the speed of light was implicitly used during the computations… Which indeed had to do with relative speeds, or relative accelerations.

2.In identifying light clock time with time in general. Otherwise Sophia could tell, from within the spaceship, without looking outside, whether she is moving uniformly. That would violate the “Principle of Relativity” of Galileo according to which such a motion is not detectable (Henri Poincaré generalized to electromagnetism what he baptized at the time the “Principle of Relativity” in 1904, while he was lecturing among the savages of the New World; unsurprisingly, they don’t remember, and attribute the work to Einstein, ironically enough).

The direct approach above is primary school level. It also directly makes the so called “Twin Paradox” into an absurdity.  Instead, of just hand waving that said paradox is not valid, as Feynman does in his excellent Lectures on Physics, because one twin was accelerated, and the other not, I tackle that from the start, as it should be.

The simpler, the deeper.

Patrice Aymé


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because all (Western) philosophy consists of a series of footnotes to Plato

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Smile! You’re at the best WordPress.com site ever

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GrrrGraphics on WordPress

www.grrrgraphics.com

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because all (Western) philosophy consists of a series of footnotes to Plato

Patrice Ayme's Thoughts

Striving For The Best Thinking Possible. Morality Needs Intelligence As Will Needs Mind. Intelligence Is Humanism.

Learning from Dogs

Dogs are animals of integrity. We have much to learn from them.

ianmillerblog

Smile! You’re at the best WordPress.com site ever

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Military and general security

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