Den 22.02.2025 01:59, skrev rhertz:
I'm bored with your stupid replies.
I can understand why you don't like being caught in
doing the same blunders over an over.
Spacelike events using Schwarzschild metric are seriously analyzed and
used by relativists in several fields.
There is no such thing as "Spacelike events".
Snap your fingers!
Was the event "Richard snapped his fingers" spacelike or timelike?
intervals (distance and time) between events can be
spacelike or timelike.
Before I post a wall of words with examples, I want to clarify your
stupid comment "ds can't be assigned a value" and having the stoneface
to attribute to me such interpretation. This is far from true, norwegian wood.
Richard Hertz wrote:
| ds² = dr²/(1-2GM/c²r)
|
| Since 1/(1-2GM/c²r) > 0 outside the event horizon (c²rv>v2GM), ds²>0,
| and the events are spacelike separated.
This is crystal clear, you claim:
ds² = 1/(1-2GM/c²r)⋅dr² implies ds² = 1/(1-2GM/c²r)
Don't you understand how ridiculous this is?
Neither ds² nor dr² can be assigned a specific value,
only the ratio is defined, (ds/dr)² = 1/(1-2GM/c²r)
You are doing this blunder over and over, and I have
pointed it out over and over, but you seem to
be unable to learn.
I find your ignorance of basic calculus astonishing.
Now, EAT THIS EXTRACT ABOUT USE OF SPACELIKE EVENTS IN CURRENT PHYSICS
(Hint: It doesn't imply AT ALL FTL events).
"FTL events" can only mean that something is moving faster
than light, which is impossible, so what is your point?
And why do you have problems with understanding the concept
"spacelike interval" and "timelike interval"? It has nothing
specific do do with SR or GR, it is simple common sense.
If two events can be causally connected, the interval
between them is timelike.
If they can not be causally connected, the interval
between them is spacelike.
Example:
The events are that I snap my fingers, and you snap your fingers.
We have a two way video link, so we can see each other all the time.
If you snap your fingers at 12:00 UTC today, and I do the same,
then there is no way you snapped your fingers because you saw
I did it, or vice versa. Causal connection is impossible,
the interval between our finger snaps is spacelike.
But if you snapped your fingers yesterday at 12:00 UTC, and I
did it today at 12:00 UTC, then it is possible that I snapped my
fingers because I saw you did it. Causal connection is possible,
the interval is timelike.
Mathematically this can be expressed thus: s² = −c²T² + D²
where D is the distance between our positions when we
snapped our fingers, and T is the time between our finger snaps.
If s² > 0 then D > cT and D/T > c so no signal from you
could have reached me before I snapped my fingers, and no signal
from me could have reached you before you snapped your fingers.
Causal connection is impossible, the interval between us is spacelike.
If s² < 0 then D < cT and D/T < c so a signal from you
could have reached me before I snapped my fingers.
Causal connection is possible, the interval between us is timelike.
There is no way you can fail to understand this.
"Timelike" and "spacelike" is used in relativity,
but that the equation s² = −c²T² + D² and
s² > 0 means Causal connection is impossible and
s² < 0 means Causal connection is possible
is simple common sense.
But your response to s² = −c²T² + D² was:
Richard Hertz wrote:
| Pretentious asshole: Using s instead of ds?
| You are a mental case.
| Also, this is a resemblance of Minkowski's metric (no gravity).
| But then you switch to Schwarzschild?
| It's painful to read your shit.
|
| Instead of your ignorant expression: s² = −c²T² + D²
| Minkowski's metric for spacetime is universally represented as:
| etc.
:-D
THIS EXTRACT SHOWS HOW FUCKED UP RELATIVISTIC PHYSICS IS, TRYING TO
EXPLAIN
THE WEIRDEST THINGS ACCOMODATING GENERAL RELATIVITY AT EVERY CORNER.
AND THAT'S WHY MODERN SCIENCE BASED ON RELATIVITY IS SO FUCKED UP.
AS I SAID, YOU CAN EAT WHAT FOLLOWS, EXTRACTED FROM THE CORE OF GR
MODERN
APPLICATIONS. IT'S PURE SHIT. A PSEUDOSCIENCE.
BUT, AS YOU LIKE IT, GO AHEAD AND EAT IT.
I, MEANWHILE, LAUGH AND DISPISE ALL THIS CRAPPY SHIT.
ENJOY.
Does this whining mean that you have given up your claim
that ds² > 0 means that the interval between two events is spacelike?
*************************************************************************
Spacelike events do have real use in science, especially in the context
of theoretical physics and general relativity. While spacelike events themselves aren't directly observable (since they can’t be connected causally through any physical signal, like light or matter), they are
crucial in understanding the structure of spacetime and the behavior of
the universe.
Whenever you write "spacelike event" I will read "spacelike interval"
"Spacelike intervals do have real use in science" :-D
Word salad, with no real content.
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
Some ways spacelike events are relevant:
1. Defining Causality and Spacetime Structure
Spacelike events help establish the causal structure of spacetime. Understanding which events can influence each other and which cannot
(based on whether they are timelike, lightlike, or spacelike separated)
is essential in general relativity. It allows physicists to:
• Determine the behavior of particles and light in curved spacetime.
• Define the boundaries of possible information flow in the universe.
• Make predictions about the future evolution of systems (like stars,
black holes, or cosmological models).
In general relativity, the concept of spacelike separation plays an
important role in causal diagrams and spacetime diagrams, which are
used to visually understand the structure of events in spacetime.
In these diagrams, spacelike events are those that lie outside of
the light cones of each other and cannot be causally connected.
Isn't light cones common sense?
Events outside of light cones:
D > cT, causal connection impossible.
Events inside future light cone:
D < cT, casual connection to future events possible.
Events inside past light cone:
D < cT, casual connection to past events possible.
The visible universe is on the past light cone.
The interval between the event "light source emits light" and
the event "observer sees the light" is lightlike, D = cT.
Obvious common sense, isn't it?
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
2. Relativity and the Speed of Light
The speed of light acts as a strict upper limit on the speed at which information can travel through spacetime. Spacelike separation
represents situations where the distance between events is so large that
no signal,
even light, could travel from one to the other within any reasonable
time frame.
Obvious trivialities, isn't it?
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
3. Quantum Field Theory and Entanglement
In the realm of quantum mechanics, spacelike separation also plays a
role,
especially in the context of quantum entanglement. Although two
particles
may be spacelike-separated (meaning no signal could travel between
them),
they can still exhibit correlated behavior due to their quantum
entanglement.
This phenomena, often discussed in terms of spooky action at a distance
(a phrase coined by Einstein), raises intriguing questions about
non-locality
in quantum mechanics.
While this doesn’t imply any physical causal connection in the classical sense, the concept of spacelike separation helps to clarify the limits
of classical causality versus quantum entanglement, which is relevant in quantum field theory.
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
4. Cosmology and the Early Universe
In cosmology, spacelike events are sometimes used to describe the relationship between different points in the universe’s history or different regions of spacetime that are not causally connected. For
example:
• During the early universe, before the universe became transparent
(before
the cosmic microwave background formed), different regions were causally disconnected because they were separated by large distances, meaning
they
were spacelike-separated.
Right.
We are (loosely) inside of the expanding sphere from the big-bang,
so we will see the MBR radiation from different parts of the sphere
when the universe became transparent in different direction.
Since the temperature of the MBR varies (very little) in different
direction, the different parts of the sphere when the universe became transparent must have had different temperature, which means that
the different parts of the sphere can't have been causally connected.
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
• Events that happened in distant regions of the universe at the same
time
can be spacelike-separated if no signal could travel between them due to
the
finite speed of light and the expansion of the universe.
Obvious trivialities, isn't it?
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
• Understanding spacelike separation in this context helps to understand cosmological models like the inflationary universe, where certain
regions
of space may have never interacted but are still part of the same
overall
structure.
Now we are back to the interpretations of the variations in the MBR. Cosmological models like the inflationary universe is not part of GR.
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
5. Black Hole Information Paradox
In the context of black holes, the concept of spacelike-separated events becomes important when analyzing phenomena like the information paradox.
When one part of the spacetime near a black hole’s event horizon might
be
spacelike-separated from another part inside the event horizon, and it's wanted to understand how information might be preserved or lost. This
plays a role in understanding the fundamental principles behind quantum gravity and the interaction between quantum mechanics and general
relativity.
All testable predictions of GR are outside the event horizon,
and we know that objects outside the event horizon behave
as predicted by GR, but what happens inside it isn't observable.
So GR's predictions for what happens inside are unfalsifiable.
GR is a valid theory outside the event horizon,
but no theory of physics is valid inside the event horizon.
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
6. Relativity in High-Energy Physics
In high-energy physics, such as in particle collisions or accelerator experiments, spacelike separation come into play when dealing with relativistic particles. For example:
• High-energy collisions can produce spacelike-separated events if the particles created are far apart enough, and their separation exceeds
what can be connected by the speed of light during the time of the experiment.
• These kinds of interactions can be analyzed using tools like Feynman diagrams in quantum field theory, where spacelike-separated events might represent interactions that cannot influence one another directly but
are part of a broader process.
QED and other quantum theories can predict things which
SR and GR can't, but that doesn't mean that QED shows that
the predictions of SR and GR are wrong.
How does this show that RELATIVISTIC PHYSICS IS FUCKED UP?
Summary
While spacelike events themselves are not "observable" in the
traditional
sense (since they cannot influence each other causally), they are an essential part of the theoretical understanding of spacetime, causality,
and the limits of information transfer. They help to understand:
• Causal structure in general relativity.
• The limits of communication in spacetime.
• Quantum phenomena like entanglement.
• Cosmological models of the early universe and inflation.
• High-energy particle interactions.
What exactly do you mean with the following statement?
Spacelike-separated events play a significant role in the
theoretical framework that governs relativistic physics, helping to understand the universe at both large and small scales.
"Spacelike-separated events help to understand the universe" :-D
This is a word salad with no real content.
You wrote:
"THIS EXTRACT SHOWS HOW FUCKED UP RELATIVISTIC PHYSICS IS"
Where is the "EXTRACT" that SHOWS HOW FUCKED UP RELATIVISTIC PHYSICS IS?
--
Paul
https://paulba.no/
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