The 4th Spatial dimension is memory.

arfa brane said:
But that's predicated on physical = being in a bottle. You can't put the distance from your front door to the street in a bottle. Lots of things we accept the existence of, can't be put in a bottle.
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Exactly

I don't accept the existence of DISTANCE

DISTANCE is a CONCEPT which enables us to convey meaning to stuff which does exist (without itself existing)

The in a bottle bit is not correct however

Gravity exist as detectible PROPERTY of mass and I believe in gravity

Guess you could stretch the in a bottle a tiny bit and say the bottle has mass - bottle has tiny bit gravity - bottle has tiny bit of own gravity in itself

:)
 
arfa brane said:
Yep.

Time is a domain for functions of time. A function of time in physics can be a frequency for a real wavetrain, for instance.
Time appears to be the same mathematically as the real line. Hence linear.
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Not sure I can unpack this

Time is a domain for functions of time

So - time is the home for time to do stuff (operate?)

A function of time in physics can be a frequency for a real wavetrain

To many if's - can you clarify?

Time appears to be the same mathematically as the real line. Hence linear

Again to many if's - can you clarify?

:)
 
Michael 345 said:
Not sure I can unpack this

Time is a domain for functions of time

So - time is the home for time to do stuff (operate?)
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In mathematics the domain of a function is defined as a set of values for some variable or set of variables; if f(t) is a function of time, t is the variable and d/dt{f(t)} exists for all t. So f(t) might describe a physical signal (or whatever you want), but its domain is linear. You can define d/dt to be a linear operator.
A function of time in physics can be a frequency for a real wavetrain

To many if's - can you clarify?
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a wavetrain is just a periodic input (signal), a continuous train of waves.
Time appears to be the same mathematically as the real line. Hence linear

Again to many if's - can you clarify?
Click to expand...
The real line is by definition linear; you can construct the real line with a unit vector and addition.
 
arfa brane said:
In mathematics the domain of a function is defined as a set of values for some variable or set of variables; if f(t) is a function of time, t is the variable and d/dt{f(t)} exists for all t. So f(t) might describe a physical signal (or whatever you want), but its domain is linear. You can define d/dt to be a linear operator.
a wavetrain is just a periodic input (signal), a continuous train of waves.
The real line is by definition linear; you can construct the real line with a unit vector and addition.
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Thanks for unpacking

Unfortunately, for me, while I think I have it a little clearer that is as far as it goes with Heuy Dewey and Louie

Take a break and come back later

Thanks again

:)
 
Mathematically, the visible universe is a 3-ball; physically it's our Hubble volume.

It contains, information, this volume. Some of this information is the fossilized signal from an event that was pretty much instantaneous and everywhere the same (smooth or isentropic), the so-called recombination era. When it ended the universe was dark until the first stars formed.

But this background signal is a mere fragment of the total information in the volume. As entropy increases and the total information content increases with it, the universe conserves information by storing it in black holes . . .
 
arfa brane said:
Mathematically, the visible universe is a 3-ball; physically it's our Hubble volume.

It contains, information, this volume. Some of this information is the fossilized signal from an event that was pretty much instantaneous and everywhere the same (smooth or isentropic), the so-called recombination era. When it ended the universe was dark until the first stars formed.

But this background signal is a mere fragment of the total information in the volume. As entropy increases and the total information content increases with it, the universe conserves information by storing it in black holes . . .
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I like that model. But memory is useless unless influential to current universal phenomena.
How does it get reused, what is the memory retrieval and processing system?

And storing universal memories in black holes, how does that create a spatial memory dimension?
 
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Write4U said:
I like that model. But memory is useless unless influential to current universal phenomena.
How does it get reused, what is the memory retrieval and processing system?
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Black holes are believed to evaporate via Hawking radiation; the lifetime of the black hole can be quite large. You could I suppose conjecture that black holes are a maximally efficient memory, with the worst-possible dereferencing mechanism (i.e. readout) in the universe.
 
arfa brane said:
Black holes are believed to evaporate via Hawking radiation; the lifetime of the black hole can be quite large. You could I suppose conjecture that black holes are a maximally efficient memory, with the worst-possible dereferencing mechanism (i.e. readout) in the universe.
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Actually, the theory goes that black holes destroy information.

If you dropped a glass on the floor and it broke in a million pieces, you could theoretically reconstruct the original glass if you could track the trajectories of each piece, reverse the time sequence, and put all the pieces back where they belong. The information about the original glass is not lost.
This is true of almost any process in the universe.

Except black holes. Once particles (or data or information) enter a black hole, that information (such as the speed and trajectory of the particles) is destroyed forever. You cannot reverse the process and regain the original configuration.

It's an active area of research.
 
DaveC426913 said:
Once particles (or data or information) enter a black hole, that information (such as the speed and trajectory of the particles) is destroyed forever.
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I'm not sure about that. I thought Steven Hawking solved that problem.
 
I think a black hole is an object that challenges the theory that information can be stored in less than four dimensions.

Since, if you can store information (this has to include the act, or process, of storage, however it gets defined), in say three dimensions, one of them is the time dimension, leaving two for storage. Well, the Bekenstein limit relates the surface area of a black hole to its entropy; the problem then is reformulating what is the physical surface of a black hole, which seems to be still under discussion. But the take-home is, the information content of a black hole is found on the surface of the black hole, the information coming out is reducing the surface area (because, information has to involve the transfer of energy, duh).
 
Layman's question;
There are two main principles in play:[4]
  • Quantum determinism means that given a present wave function, its future changes are uniquely determined by the evolution operator.
  • Reversibility refers to the fact that the evolution operator has an inverse, meaning that the past wave functions are similarly unique.
The combination of the two means that information must always be preserved.
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https://en.wikipedia.org/wiki/Black_hole_information_paradox

Do these two principles address "wave collapse"? Does wave collapse destroy the original information contained in the physics?
Example: if I use a wrecking ball to disassemble a building and randomly distribute the rubble in a yard and tear up the building's blueprint, can I rebuild the building's architecture by reversing the process?
 
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Write4U said:
Do these two principles address "wave collapse"? Does wave collapse destroy the original information contained in the physics?
Example: if I use a wrecking ball to disassemble a building and randomly distribute the rubble in a yard and tear up the building's blueprint, can I rebuild the building's architecture by reversing the process?
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If the disassembly process can be recorded, then in principle it isn't an irreversible process. If you don't record the disassembly process it is irreversible; you need to keep the inputs around, so to speak, or keep the blueprints.

The Rubik's cube has a nice way to define information; if you randomly permute the thing without looking at it, then try to solve it, you know about some lost information, even how large the string of operations is. Your solution will necessarily have an entropy relative to this irreversibly lost information.

If you do keep a record of the operations as a string, you also have a (trivial!) solution; obviously there are more than this one, however.
 
I always liked David Bohm's experiment of "enfolding ink drops into and unfolding out of glycerine" (corn syrup).


The trick is to avoid turbulence and that's what happens to most enfolding and unfolding processes. They are often very turbulent and chaotic. Is memory conserved in chaos?
 
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Things seem to be back on track, so I can post here again without causing confusion.

Time is the 4th Dimension. (Physics)
Memory is the 4th Spatial Dimension. ( Imaginary Numbers remembering details in Quantum Physics)

Time stores Memories.

THUS

Physics and Quantum Physics are Unified by the 4th Dimension.
 
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