The New Physics

Algebra of Tetraktys, Geometry of Larson's Cube & the Wheel of Motion

Posted on Saturday, December 10, 2011 at 08:33AM by Registered CommenterDoug | CommentsPost a Comment | EmailEmail | PrintPrint

When I first showed the LRC’s RST-based “Wheel of Motion” to our new LRC associate, Larry, the mathematician, he said, “Well that’s nice, but how come you don’t make it 3D?”

I’ve always hated that question, because in a 3D universe, the periodic table of elements ought to be 3D, but the wheel of motion, like the periodic table, is only a 2D representation of the periods of its elements. It has always seemed to me that showing the true periodic nature of the elements in the wheel format, which eliminates the confusing gaps in the table format, was accomplishment enough, especially since the wheel format clearly shows the true magnitudes of the RST-based 4n2 numbers, rather than quantum mechanics (QM)-based 2n2 half-period numbers of the table.

Well, it turns out that several years ago, studying the numbers of the tetraktys, we discovered how they are actually the algebraic equivalent of the geometry of Larson’s Cube. Since then, we’ve been trying to understand the SUDR and TUDR, and their combinations as preons, which we call S|T units that combine to form the so-called “fundamental particles” of our preon version of the standard model, and connect them to the wheel. These entities combine to form the seqence of elements in the wheel, following a 4+16+36+64 = 120 pattern of mathematical “slots” for the 118 elements plus the proton and the neutron.

It’s not been easy, but we have made some progress, with many starts and stops along the way. One important connection links the progression of the LC (and thus the tetraktys) with the wheel of motion. We’ve found that we can encode the universal space/time expansion in terms of the expanding LC, which can be written as the expanding 3D level of the tetraktys

TEn = ne0 (+) 2(ne0)1 (+) 4(ne0)2  (+)  8(ne0)3   

where TEn is the expanded LC equivalent of the tetraktys, n is the unit variable of its time expansion, and e0 is the scalar time unit (i.e. e0 = 1, the point, but it also represents one line, one square and one cube, after one unit of time expansion), corresponding to one edge of the LC (measured from the interior center point of the LC to the face center, lying along any one of the three axes of the stack of 8 one-unit cubes, making up the LC.)

So, in 1 unit of time, the value of TEn is

TE1 = 1*10 (+) 2*11 (+) 4*12  (+)  8*13   = 1 (+) 2 (+) 4 (+) 8

The (+) operator indicates the joining together of the four components of the LC, the respective values of the scalar point unit, the linear line unit, the square area unit, and the cubic volume unit of the LC, into one, unified, entity, isomorphic to the 3D tetraktys (20, 21, 22, 23).

This is similar to the concept of joining of the scalar, vector, bivector and trivector into a multivector in Hestenes’ Geometric Algebra. Only, in our case, we join the 0D scalar and the three pseudoscalars of the tetraktys into the LC.

Hence, at t=2, 

TE2 = 2e0 (+) 2(2e0)1 (+) 4(2e0)2  (+)  8(2e0)3   = 2 + 4 + 16 + 64

Similarly, 

TE3 = 3 + 6 + 36 + 216,

and

TE4 = 4 + 8 + 64 + 512.

Now, clearly, any of the six 2x2 = 4 face units of the 2x2x2 = 8 stack of cube units of TE1 corresponds to the four slots of the innermost wheel of the Wheel of Motion, where the RST-based period is 4n2 = 4, when n = 1 (The four slots for the Proton, Neutron, Protium, Deuterium (H).)

Similarly, any one of the six 4x4 = 16 face units of the 4x4x4 = 64 stack of cubic units of TE2 corresponds to the sixteen slots of the second, outer wheel, when 4n2 = 16, n = 2.

The third wheel corresponds to one of the six 6x6 = 36 face units of the 6x6x6 = 216 cubic units of TE3, where the RST-based period is 4n2 = 36, n = 3, and the fourth wheel corresponds to one of the six 8x8 = 64 face units of the 8x8x8 = 512 stack of cubic units of TE4, where the RST-based period is 4n2 = 64, n = 4.

Of course, the question is, how do we know that this is anything other than a mathematical coincidence? Where is the physical connection to these numbers? Well, the answer is that we are still trying to clarify that connection, but it’s certainly interesting to note that the ratios of the associated balls of the LC follow this same numerical pattern that we see in the expanded right lines.

That is to say, the ratios of the respective radii, surfaces and volumes of the two balls associated with TE1, TE2, TE3 and TE4 (the outer ball and its inverse), follow the same numerical pattern as do the edges, lines, squares and cubes in the expanding LC, because, as it turns out, the ratio of the radius of an initial volume to that of the nth volume of equal magnitude added to it, is equal to the cube root of n. Everything follows from there.

If we take the outer ball of the LC, which geometry and algebra agree must have a radius equal to the square root of 3, and its inverse ball, which must have a radius equal to the inverse of the square root of 3, and follow their expansion as the LC expands, we find that it takes the sum of the volume of 8 balls in each case to expand the ratio of the radius of the initial ball to the radius of the nth ball from 1 to 2, (81/3 = 2). 

It then takes 64 of these volumes to expand the ratio of the two radii to 4, (641/3 = 4). It takes 216 volumes to expand the ratio to 6, (2161/3 = 6), and it takes 512 volumes to expand the ratio to 8, (5121/3 = 8). 

Thus, we see that there is not only a 0D, 1D, 2D and 3D mathematical (discrete unit) connection between the algebra of the tetraktys, the geometry of the LC and the Wheel of Motion, but there is also found a corresponding physical (i.e. continuous unit) connection between them.

Moreover, we see that it is the area aspect of a given volume that yields the 4n2 periods of the wheel, which means that the associated sums of the 3D volumes are actually incremented to form the 2D elemental slots in each period; That is, summing the volumes leads to the RST’s 4n2 relation, because the six faces of each expanded stack of one-unit cubes are degenerate. Thus, only one need be selected to select associated two-unit volumes. Consequently, since the smallest face possible has a magnitude of four squares, when the successive expanded LCs are divided by 4, we get the required relation:

4/4 = 12; 16/4 = 22; 36/4 = 32; 64/4 = 42.

And because this is so, we can just as easily represent the periods in the wheel as a factor of cubes:

8n3 = 8, n=1; 8n3 = 64, n= 2, 8n3 = 216, n=3; 8n3 = 512, n=4,

which is just the cubic progression of the LC.

So, to answer Larry, from a graphics perspective, it’s just much easier to draw a 2D wheel of motion than it would be to draw a 3D version. However, from a mathematical perspective, the 2D aspect of the wheel cannot be separated from its 3D aspect, because, in reality, they are simply two aspects of the same thing.

The bottom line is, even though the Wheel of Motion is not drawn in 3D, it represents a 3D volume sequence nevertheless. 

Now, we need to find the way to build the expanded LCs (TE1, TE2, TE3, TE4), using the S|T units that serve as the preons to our standard model of particles. Some ideas on that next.

Heading Down the New Road

Posted on Tuesday, November 22, 2011 at 06:23AM by Registered CommenterDoug | CommentsPost a Comment | EmailEmail | PrintPrint

As we make the course correction discussed in the entry below, it’s useful to note that we can now view Einstein’s mass -> energy equation in terms of the SUDR/TUDR combos.

To see this, we need only change the way the equation is usually written. We change from

E = mc2,

to

E = c2 * m,

which, in space/time terms, may be written,

t/s = (s/t)2 * (t/s)3,

but this can also be written in terms of SUDR and TUDR ratios, as a ratio of their respective 2D area scalar speeds to their respective 0D radius scalar speeds, in this manner:

t/s = ((s/t)/(t/s))/((s2/t)/(t2/s))

In the reciprocal speeds of the first term, the 0D radii space units yield unit speed ratios:

s/t = 2(20)/2(20) = 2/2 = 1 and t/s = 2(20)/2(20) = 2/2 = 1,

and the physical dimensions are squared, when the inverse multiplication operation is carried out:

((s/t)/(t/s)) = ((s/t)*(s/t)) = s2/t2.

However, in the 3D term, the physical dimensions are raised up from 2D to 3D, by the inverse multiplication operation:

s3/t = 2(22)/2(20) = 8/2 and t3/s = 2(22)/2(20) = 8/2.

Hence:

((s2/t)/(t2/s)) = ((s2/t)*(s/t2)) = s3/t3,

which are the volume dimensions of inverse mass.

Consequently, when the final inverse multiplication operation is carried out, we get Einstein’s familiar equation:

t/s = (s/t)2 * (t/s)3.

The surprising thing about this, however, is that the inverse  multiplication operation on the ratio of these two geometric magnitudes, equates them numerically with the next higher dimensional unit, what we might call the fundamental magnitudes of Larson’s Cube (LC), the 1D line width (21), the 2D area face (22) and the 3D volume cube (23); that is, the necessary mathematical operation of the fundamental reciprocal relation raises 2 to 4 (22 = 4) and 4 to 8 (22 * 2 = 23 = 8), and then, subsequently, the 2D area magnitude multiplied times the 3D volume magnitude is equal to the 1D line magnitude, just as it should be.

This will no doubt be really useful in working with the S|T units of the preons in terms of energy, starting with the neutrinos and working our way down to the electrons and positrons and finally combining the quarks into protons and neutrons and adding the electrons to the protons, to begin working our way up the periodic table of the elements.

But more than this, it appears that this marvelously clear insight into the meaning of the terms in Einstein’s famous equation might reduce the horribly arcane subject of modern physics to a toy model that can be taught, starting in elementary school.

Now, we need to take a look at the less famous, but more enigmatic equation of Max Planck, E = hv, in the light of the LC..

"Floundering Around in the Dark and Actually Stuck"

Posted on Wednesday, November 16, 2011 at 09:09AM by Registered CommenterDoug | CommentsPost a Comment | EmailEmail | PrintPrint

I just finished watching an interesting talk by Ed Witten entitled “Knots and Quantum Theory,” given at the prestigious Institute for Advanced Studies (IAS) at Princeton. Witten more or less describes his exploration of the connection that knot theory has to quantum theory, which serves to exemplify how researchers spend most of their time “floundering around in the dark,” and finding themselves “actually stuck” in their efforts to make sense out of the physical structure of the universe. 

I have found the same thing in my little microcosm of theoretical physics research. Only in my case, instead of struggling to understand the monumental and vast complexity of the arcane subjects with which the intellectual giants at IAS work, I struggle to understand the straightforward first four numbers, one, two, three and four. Nevertheless, I too must admit that I spend most of my time floundering in the dark and actually stuck.

For example, for a long time I have tried to connect in my pea brain the LRC’s preon model of the so-called elementary particles of particle physics with the two balls of Larson’s cube (LC); that is, the inner and outer balls defined by the LC, the one contained by it and the one containing it.

These two balls are nested in an intriguing way that can be extended in both “directions” analogous to the way numbers can be extended in the positive and negative “directions.” I had noticed that the radius of the next smaller inner ball (in the “negative direction”), nested inside the radius of the initial inner ball, and is the inverse of the first outer ball, with the inner ball in between them representing unity (to distinguish these three balls, I will refer to them as inverse, unit and outer, from this point on) And since, presumably, this is the relationship of the unit space and unit time oscillations (SUDRs & TUDRs) used to construct the preons of our preon model, it seemed to be a natural conclusion that they could be used to quantify the SUDR and TUDR. However, so far, the attempt to proceed on this basis has only led to floundering and I have been stuck ever since.

At length, I’ve had to conclude that, in spite of tantalizing clues that this is the direction to go, I must be doing something wrong. I must not be thinking about the LC in the correct way and this has caused me to reflect on the curious observation that I made some time ago, that these balls are nothing real. The only real part of the construction is the LC itself. The balls can only exist as some sort of phantom representation of the discrete numbers of the LC. They appear as soon as the LC appears and disappear as soon as the LC disappears, even though their radii are both smaller and larger than the unit magnitude of the LC, regardless of how small or large that unit might be, ad infinitum. 

Yet, what I have also known for some time is that the ratio of the inverse and outer balls is a rational number, which relates to the discrete numbers of the LC in a remarkable way, but I think I tried to use that fact in a way that that led me to equate the SUDR and TUDR with the two, inverse, balls directly, when I should have been using their ratio only.

This means that the reciprocal relationship of the SUDR and TUDR is still to be found in the original 1/2+1/1+2/1 = 4/4 equation, not in its equivalent, substituting the square root of 2 or the square root of 3 for the unit. However, both of those square roots are associated with the discrete equation in the sense that their ratio translates the discrete numbers of the LC to the continuous magnitudes of the two, inverse, balls.

For example, the numerical progression of the LC is 2= 8, 4= 64, 6= 216, 8= 512, where the base number is 2 because each dimension has two “directions,” and the exponent is 3 because there are no new phenomena beyond 3 dimensions (Bott’s periodicity  theorem). But just as the LC’s volume expansion is a discrete number, the expansion of its two associated, inverse, balls is a continuous magnitude, given by the volume formula for a ball, V = 4/π * r3

Consequently, since the r of the 2D slice of the unit ball is always 1/2 of the cube root of the LC discrete number, the associated discrete progression of its radius is, 1/2*81/3 = 1, 1/2*641/3 = 2, 1/2*2161/3 = 3, 1/2*5121/3 = 4, and since the r of the 2D slice of the outer ball is always the square root of 2 times the corresponding r of the 2D slice of the unit ball, the discrete progression of its radius is 21/2 * 1 = 21/2, 21/2 * 2 = 81/2, 21/2 * 3 = 181/2, 21/2 * 4 = 321/2.

Now, the question is, what are the corresponding radii of the 2D slice of the inverse balls? The procedure that I have been trying to use depends on the assumption that this radius can be determined by geometric construction: Simply construct a new LC inside the unit ball and take the radius that fits inside it as the next lower radius in the progression. This procedure comes from the fact that each upper radius can be constructed similarly. So, how can it matter what size we choose as the unit size to relate the two inverses to?

However, as I said, this has led to floundering, even though it seems logical. I should note that it was compelling to me for at least two reasons. First, it’s easy to see that the radius of the first ball constructed in this manner is the inverse of the square root of 2, the radius of the outer ball. Second, it allows us to extend the radii in two “directions” from the unit ball, situated between these two, inverse, radii, just as the number 1/1 is situated between the two inverse numbers, 1/2 and 2/1.

In spite of these two sirens, however, I think it’s necessary to resist the temptation to go that way and instead to look at unity as the real part that must be increased. This means that we take the unit progression as 1/1, 2/2, 3/3, …n/n. While this might seem to be a trivial assumption given the fundamental postulates of the RST, the 1/2+1/1+2/1 = 4/4 equation was misleading, since it seemed to imply that the traditional number line, 1/1, 2/1, 3/1, …n/1, should be taken as representing the positive displacement values we need: To the left of 1/1, we have the increasing values of what Larson called time displacements, and to the right we have the increasing values of what he called space displacements, which are the inverse of the time displacements.

This is logical and straightforward, but perhaps it is wrong in the sense that it only succeeds in describing the inverse displacements from 2/2. After all, we can’t get any displacement from 1/1. If this is so, then the next two displacements we have to go to are at the 4/4 and the 6/6 units in the progression, and so on:

1) 2/2 = (1/2)/(1/2)
2) 4/4 = (1/4)/(1/4)
2) 6/6 = (1/6)/(1/6)
.
.
.
n) n/n = (1/n)/(1/n)

The advantage of this line of thinking over the previous is that it brings the mathematical development into conformity with the postulates, and it makes the relationship of the SUDR and TUDR to be inverse in the same sense that space and time are inverse: The quantity on the left is the inverse of the quantity on the right, by virtue of the division symbol; that is, they are not inverse numerically (i.e. both are positive), but they are inversely related in the equation, just as two opposed, but equal, 1D line segments are both positive magnitudes.

It’s also obvious that the 1 in the numerator is not the quantity 1 numerically, but it is the same number that is in the denominator, raised to the power of 3, representing 1 volume unit as a whole, expanded and contracted, as the number 1 represents one cycle of 2π radians in the LST equations. Thus, in terms of space and time dimensions, the discrete progression turned oscillation is different in each dimension. For three dimensions, the volume progression (i.e. volume frequency of oscillation, in units per cycle) is:

2*(23)/2*(20) = 8, 2*(43)/4*(20) = 32, 2*(63)/6*(20) = 72, 2*(83)/8*(20) = 128.

For two dimensions, the frequency is:

2*(22)/2*(20) = 4, 2*(42)/4*(20) = 8, 2*(62)/6*(20) = 12, 2*(82)/8*(20) = 16.

For one dimension, the frequency is:

2*(21)/2*(20) = 2, 2*(41)/4*(20) = 2, 2*(61)/6*(20) = 2, 2*(81)/8*(20) = 2,

which is constant!

To say the least, this has very encouraging implications for the preon combos, but we need continuous magnitudes, not discrete units, since nature expands (contracts) spherically, not cubically. This is where the ratio of the outer ball and its inverse comes in: It serves to translate these discrete mathematical numbers into continuous physical magnitudes, or at least that is what we hope for.

More next time.

Do Faster-Than-Light Neutrinos Invalidate Einstein's E = mc^2?

Posted on Friday, October 28, 2011 at 09:18AM by Registered CommenterDoug | CommentsPost a Comment | EmailEmail | PrintPrint

The iconoclastic discovery of faster-than-light neutrinos, if confirmed, again places the Reciprocal System of Physical Theory (RST) in the lime-light. Or at least it would, if the new system weren’t ignored by the Legacy System of Physical Theory (LST) community.

Here at the Larson Research Center (LRC), we are getting woefully behind major new developments, as they come in ever faster. Nevertheless, it’s interesting to see how the RST easily accommodates the new superluminal neutrino findings. In our preon model of the LST standard model of particle physics, we can see that there are two of every fermion particle and anti-particle, except neutinos.

For instance, a left-handed and a right-handed version of the negative electron, and the two corresponding versions of the positive electron (positron), occupy the left and right end positions in the LRC schematic, as shown in figure 1 below:

Figure 1. LRC Chart of Standard Model Fermions Based on SUDR|TUDR Triplet Combos

From this chart, we can see that the central positions of the neutrino and anti-neutrino are unique in that, like the fulcrum of a lever, they are in-between the left and right sides of the chart. This means that, if we rotate the chart horizontally, the positions of all the particles are swapped, except those of the neutrinos, which maintain their central positions along the axis of rotation.

However, notice that such a rotation will invert the postions of the constituent preons (S|T units) in every particle of the chart, including those of the neutrino and anti-neutrino, so that the S|T units on the left and right sides of each triangle are swapped and the left - right orientation of the bottom S|T units in the triangles is reversed.

Thus, the two sides of the chart, the front and backsides if you will, represent two, reciprocal, sets of S|T combos, which correspond to the two sectors of the RST universe of motion.  Hence, there are actually two neutrinos and two anti-neutrinos in the system, which Larson would have designated the m-neutrino and the c-neutrino, together with their corresponding anti-particles, inhabiting their respective material and cosmic sectors of the universe of motion.

Therefore, we see that the constituent S|T combos of each sector of the universe of motion exhibit a “handedness,” or chirality, as it is called, which is an observed property of the respective fermions. Of course, the LST standard model also includes a description of interactions between these constituent particles. These interactions are described in terms of mediating particles called bosons, which are the photons, the W and Z bosons and the gluons, together with the missing Higgs boson.

While we have been concentrating our study mostly on the fermions at the LRC, it should be noted that particle interactions in the universe of motion must be described in terms of motion, rather than in the terms of the autonomous “forces,” which the LST community has concocted to suit their purposes, and that this necessarily includes the interaction between the material sector (constructed of material fermions) and the cosmic sector (constructed of cosmic fermions). 

Such material sector|cosmic sector interactions are rare, occuring only at the boundaries of the two sectors, where vector motion in space approaches the speed of light, which is the unit speed of the scalar universal space/time expansion.

In the material sector, the 3D oscillations of the SUDRs (space-like motion of fundamental constituents of material fermions) necessarily consist of less-than-speed of light motion, from the expansion of space, or the Material Sector, point of view, while the 3D oscillations of the TUDRs (time-like motion of fundamental constitutents of the cosmic fermions) necessarily consist of less-than-the-speed of light motion, from the expansion of time, or Cosmic Sector, point of view.

With this much understood, the observed faster-than-light neutrinos, if confirmed, would be explained in the RST community, in general, as a sector boundary phenomena, where the time component of c-neutrinos, moving through material sector matter, are “sling-shotted” along their way by the time component of space-like oscillations of the m-fermions. The SUDRs of these fermions have two units of time expansion, for every unit of space expansion, making them less-than-the-speed of light entities, from the space expansion point of view, but effectively increasing the speed of c-neutrinos by their uniform time expansion.

This interaction amounts to the c-neutrinos hitching a ride on the time expansion of m-fermions (i.e. the c-neutrino takes advantage of the m-fermion’s space oscillations, when passing through them,) which is tantamount to effectively increasing their speed, from the expansion of space (material sector) point of view.

Relative to the unit expansion, then, the c-neutrinos are moving faster, like a man running forward on the top of a moving train, from the material point of view, even though they would be moving slower, like a manning running backward on the top of a moving train, from the cosmic point of view.

The bottom line is that Einstein’s equations remain valid, within each sector, but motion in time (space), viewed from across the sector boundary, appears to violate the universal speed limit, just as the inverse of a rational number appears to be greater or smaller, depending upon one’s point of view. Put another way, if the left end of an East-West aligned teeter-totter is lower than its right end, as viewed from its South side, the reverse will be true, when it is viewed from its North side.

The trouble with LST physics, however, is that they do not understand that there are two, reciprocal, sectors of the universe: There is one where matter is constructed of fermions with more less-than-the-speed-of-light material SUDRs, the oscillations of which are space-like, and one where cosmic matter is constructed with more less-than-the-speed-of-light cosmic TUDRs, the oscillations of which are time-like.

But they’re getting there…

 

The Other Half

Posted on Friday, August 26, 2011 at 07:39PM by Registered CommenterDoug | Comments4 Comments | EmailEmail | PrintPrint

The 3D model of the S|T unit is a composite of two 3D oscillations, the space oscillation, the SUDR, and the time oscillation, the TUDR. Since they are the inverse of each other, the SUDR is 27 times smaller than the TUDR. We can therefore use the SUDR volume, surface or radius to express the relationship numerically. For example, let’s use the volume:

1(27)/2(27), 1(27)/1(27), 2(27)/1(27), or

27/54, 27/27, 54/27

As explained in the previous entry, only the unit measure of 3 volumes out of the lower 27, actually cube to an integer. 9. 18 and 27, which enables us to use them as 1/3, 2/3 and 3/3 of the whole, in 3D terms. Interestingly enough, however, in 1D terms, the numbers are different. Only three SUDR radii fit in a TUDR radius (i.e. 3 * (1/31/2) = 31/2), so the volume sum in which the SUDR radius is 1/3, 2/3 and 3/3 of the TUDR radius is 1, 8 and 27, respectively. I will defer the discussion of the ramifications of this fact until later. Right now I want to complete the other half of the numeric system, where the SUDR is larger than the TUDR, what we can refer to as the upper half of the number system, which terminates at 54/27.

Figure 1 below shows the chart of the upper half that corresponds to the chart of the lower half provided in the previous entry.

 

Figure 1. Chart of 27 TUDR Volumes Summing to Two TUDR Volumes

The concepts being introduced here are somewhat subtle. First, we assume that our universe is nothing but motion, with two reciprocal aspects, space and time, existing in discrete units. Since nothing is perfect, we must introduce a deviation into the perfect, one for one, expansion of space and time. The only deviation possible is a “direction” reversal in one of the two aspects, which produces a unit displacement in the otherwise perfect expansion.

We label the unit space displacement, SUDR, for space unit displacement ratio, and the unit time displacement, TUDR, for time unit displacement ratio. In simple terms the SUDR is a 3D space oscillation, while the TUDR is the inverse of this, a 3D time oscillation.

These two fundamental units progress, or increase, in their respective non-oscillating aspects. For the SUDR, this means that for each half of its oscillation, time continues to expand, and for the TUDR, space continues to expand, during each half of its oscillation. If we chart these motions we see that they are perpendicularly oriented, because they are reciprocals. Hence, it is possible that the time expansion of a space oscillation (SUDR) could bring it into contact with the space expansion of a time oscillation (TUDR).

A combination of these two fundamental entities constitutes a new ratio of space and time, a SUDR|TUDR (S|T) unit. A little consideration will show that an S|T unit is an oscillating combination that propagates in both space and time, and therefore can come into contact with other instances of S|T units, forming compound units. Consequently, we need to calculate the properties of this fundamental scalar motion combo in order to explore the possible combinations that might occur and then compare them to observations.

From simple geometric and mathematical properties, we deduce that the radius of the smallest TUDR is the square root of 3, and that the radius of the largest SUDR is the inverse of this, which means that, while it is three times smaller than the radius of the TUDR, its volume is exactly 27 times smaller than the volume of the TUDR. 

Of course, these sizes are all relative until we choose a unit for the scale, which undoubtedly must be based on the speed of light.

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