Question Isn't expansion just a lorentz transformation through time?

[Greenlight]

the universe was 10^-35 meters a fraction of a second after the big bang, but isn't that a relative size? Relative to our current space/time reference frame? Time ran slower back then but if you were there you wouldn't know it, isn't it the same for space as well? isn't space static but we see it through a changing lorentz factor?

 

[Greenlight]

z = γ (1 + v/c) -1
we don't really know the velocity, its inferred by the redshift observation.
we do have the cosmic ladder so we have a better grasp on distance.
if redshift is proportional to distance can we not substitute distance for velocity?
we can do away with the inferred velocity its not necessary nor accurate, because it's not really a velocity.
A velocity infers a direction of movement. but with expansion no two locations will agree on its vector direction.

 

[Gibsense]

z = γ (1 + v/c) -1
we don't really know the velocity, its inferred by the redshift observation.
we do have the cosmic ladder so we have a better grasp on distance.
if redshift is proportional to distance can we not substitute distance for velocity?
we can do away with the inferred velocity its not necessary nor accurate, because it's not really a velocity.
A velocity infers a direction of movement. but with expansion no two locations will agree on its vector direction.

You seem to be differentiating between recessional speed due to expansion and a velocity through space in the context of 'Lorentz' i.e. for example, the reference to energy required. It would seem that, as no energy is involved in travelling through space to achieve the recessional speed of a galaxy (as a result of the expansion of the universe), the relevance of Lorentz is in doubt.

Your point about substituting distance for velocity is IMO appropriate depending on the context. I don't see why the direction of movement is important nor understand your comment that time ran slower 'back then'

But anyway maybe someone with more competence mathematically than I might comment
Also where are you going with this?

 

[Greenlight]

the Lorentz transformation coefficient is the ratio of the energies of "now" and the past.
neither speed nor velocity are a requirement.

 

[Greenlight]

a random fluctuation created a gravity wave
the wave carried away energy
Therefor energy of the past was greater than the energy now.
a lorentz transformation is required to scale the past to the present or else we get this distorted view that looks like expansion.

 

[Classical Motion]

Would expanding space be an inertial frame or a non inertial frame?

 

[Greenlight]

Would expanding space be an inertial frame or a non inertial frame?

inertial. space doesn't expand, space/time does.

 

[billslugg]

Space expands equally everywhere, thus no one feels any acceleration due to it, thus it is an inertial reference frame. The amount of expansion is very small. On the scale of the Solar System, the Sun gets about 1 meter further away from us every year due to it.

 

[Atlan0001]

An infinitely dense holography of SPACETIME photonic photo-frame holograms equals infinite zero. The grand total of mass matter and mass energy of the cosmopolis then equals zero (((+1) (-1)) = 1/0)). Always inertialessly freely dynamic rather than inert . . . yet, still, always being inertially inert in one dimension of it.

 

[billslugg]

Space and time are inextricably linked. It takes time to get wherever you are going. This cannot be disputed. Thus they are linked. Any two things linked like this must be made of the same building blocks. Thus there is some "thing" that is both space and time. Class discuss quietly while I go to the teacher's lounge.

 

[Classical Motion]

If space expands the same all over, I think one would have to classify that dynamic as an acceleration.

A continuous increase(growing) in the coordinate system. At the minimum, an area acceleration, but probably a volumetric acceleration.

I wonder if this expansion has a point of origin or maybe it blooms from all points of mass.

A growing space. What could it be consuming? Maybe light is giving it growth too.

 

[Atlan0001]

Space and time are inextricably linked. It takes time to get wherever you are going. This cannot be disputed. Thus they are linked. Any two things linked like this must be made of the same building blocks. Thus there is some "thing" that is both space and time. Class discuss quietly while I go to the teacher's lounge.

No they aren't "inextricably linked", Bill. It takes time to get wherever you are going only because you can energetically contract SPACE . . . and that contracts the time -- as a SPACETIME 'Trojan' fourth dimension of SPACE. It doesn't work the other way around! They aren't a singularity!

 

[billslugg]

Class! Come to order. Did I hear someone using all CAPS!! tsk tsk The only "t=0" around here is how long my cigarette breaks seem!

 

[Gibsense]

[url=https://postimages.org/]
https://forums.space.com/[url=https...cc/qM4Fpr87/SR-Time-Dilation2.jpg[/img][/url]
Clearly, S.R shows the definite link between distance (space) and time
https://forums.space.com/[url=https...cc/qM4Fpr87/SR-Time-Dilation2.jpg[/img][/url]
The diagram below shows Special Relativity expressed diagrammatically and shows time dilation for a speed of 0.75 light years per second
https://forums.space.com/[url=https...cc/qM4Fpr87/SR-Time-Dilation2.jpg[/img][/url]


The diagram also shows the link between the expansion of space against time if you imagine the circle to grow larger
[/URL]

 

[Atlan0001]

Class! Come to order. Did I hear someone using all CAPS!! tsk tsk The only "t=0" around here is how long my cigarette breaks seem!

Wrong again, Bill. Too bad, so sad! The 'Infinite MULTIVERSE Universe (U)' is a Universe of all time divided into all times plural . . . mutually canceling to "t=0" for the Universe (U) and an entangled, entangling, concurrent (t=0) REALTIME NOW (t=0) instant moment of immediate universes (u)!

Every traveler traveling ascends in time to every destination located in the future histories (t=-1) SPACETIME, accelerating contraction of the local-relative universe (u) via a solitary-soliton bubble-wave before relative renormalization! Now where does that accelerating ascension in time, the ascensions all always being "spooky actions at a distance", leave every distant observer at all possible distances?! Answer! "Time dilated" into past histories (t=+1) SPACETIME, the same as they observe the "observable universe" (the past histories (t=+1) SPACETIME), including all observed and observable travelers in it!

So, (0-point) REALTIME NOW traveler to (0-point) REALTIME NOW observer entangles (t=0) to (t=0) REALTIME NOW, concurrently existing unobserved and unobservable in a dark universe of future histories (t=-1) SPACETIME (as opposed to the observed and "observable universe" of past histories (t=+1) SPACETIME)!!!!

I'm telling it like it is, Bill. So, too bad, so sad, wrong again, Bill!

Seventy-plus years of interest and study, plus being an "intuitive visual mathematician," I major in past-future histories ((t=+1) (t=-1)) SPACETIME, Bill!

You are one of the few I hate having any disagreement with!