*Post by Thomas Heger**Post by Chris M. Thomasson**Post by Daniel60**Post by Chris M. Thomasson**Post by Thomas Heger*That would be a creation out of nothing.

Where did the matter come from? What state was it in before the "big-bang"?

The matter that formed our Universe at the time of The Big Band came

from the two other Universes that smacked together at the time of The

Big Bank!!

I wonder if a super cluster of hyper massive black holes that finally

merges into one, can perhaps create new child universes within the

resulting crazy giant black hole. This means that our own universe has

many children.

We could compare 'black hole' to 'length contraction' in 3D.

But that would be “not even wrong”.

<https://en.wikipedia.org/wiki/Not_even_wrong>

*Post by Thomas Heger*Length contraction is actually only one dimensional (in SRT in 'x'

direction).

Length contraction in FLAT spacetime is observed in the direction of

relative motion, whatever direction that is. Typically (for simplicity) one

chooses the coordinate system such that the x-axis of the coordinate system

is parallel to the direction of motion, i.e. that the motion is in the +x or

−x direction.

*Post by Thomas Heger*Since the world is not one dimensional, we could try a 3d version of

relativistic shrinking.

The reason for deformation is a Lorentz transform,

No, the underlying reason is the observed constancy of the speed of light.

The Lorentz transformation (as we understand it NOW) describes the

CONSEQUENCES of that MATHEMATICALLY.

*Post by Thomas Heger*caused by high velocity

By ANY NON-ZERO RELATIVE velocity v. The Lorentz transformation

of the coordinate of space in the direction of relative motion is

x' = γ (x − v t) (1).

We consider two spatially separated events

e₁ = (x₁, t₁) ≡ (x₁', t₁')

e₂ = (x₂, t₂) ≡ (x₂', t₂').

By application of (1) and the assumption of linearity regarding uniform

motion and the passage of time, it follows trivially:

x₁' = γ (x₁ − v t₁)

x₂' = γ (x₂ − v t₂)

∆x = x₂ − x₁

∆t = t₂ − t₁

∆x' = x₂' − x₁'

→ ∆x' = γ (∆x − v ∆t)

When we measure lengths we measure the distance in space between end points

AT THE SAME TIME:

t₁ = t₂

→ ∆t = 0

→ ∆x' = γ ∆x

∆x = ∆x'∕γ

γ := 1∕√(1 − v²∕c²) > 1 if v ≠ 0.

→ ∆x < ∆x' if v ≠ 0. ∎

*Post by Thomas Heger*and a changing axis of time.

There is no “changing axis of time”. You have STILL not even understood

SPECIAL relativity.

Once again (how many more times do I have to explain that to you?):

In a Minkowski spacetime diagram –

time

^

:

:

:

:

:

:

'-------------> space

–, the axis of time (with coordinates t') of a frame of reference that is

moving parallel to the axis of space of a chosen rest frame (with

coordinates x) has to be skewed compared to the axis of time of that rest

frame (with coordinates t) because the x-origin of the moving frame

(x' = 0) is moving relative to the rest frame, and in the moving frame, too,

proper time has to be measured:

t t'

^ ^

: :

: :

: :

: :

: :

::

:-------------> x

:

x' = 0

The x-axis of the moving frame (with coordinates x') is skewed compared to

the axis of space of the rest frame because of the RELATIVITY OF

SIMULTANEITY (t₁ = t₂ = t₁' → t₂ < t₂') that is a consequence of the

isotropic speed of light (c = const.):

t t'

^ ^

: :

: :

: : _> x'

: : _.-'

: : _.-'

::.-'

+-------------> x

:\

: \

: x' = 0

:

x = 0

As a result, because we define length as the distance in space between two

end points in space AT THE SAME TIME, lengths in the rest frame (t₁ = t₂)

are shorter than the otherwise same lengths in the moving frame (t₁' = t₂').

t₂'

∆x' _.-:

_.-' :

_.-' . :

t₁, t₁' -'-----------' t₂

x₁ ∆x x₂

∆x'² = ∆x² + (t₂' − t₁)²

∆x² = ∆x'² − (t₂' − t₂)²

→ ∆x² < ∆x'² [all lengths are positive, so: ]

∆x < ∆x' ∎.

[Yes, the Pythagorean theorem. Special relativity is that simple.]

*Post by Thomas Heger*If we would apply a Lorentz transform to a large piece of space, the 3d

version off length contraction would look like a black hole.

No, it would not. Black holes are a consequence of GENERAL relativity,

where spacetime is CURVED in the presence of (non-zero) energy–momentum density.

Your posting this in rec.arts.sf.written was appropriate because it is

PURE FICTION. (Your amok-crossposting was inappropriate.)

Pass Physics 101 first.

F’up2 sci.physics.relativity

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