At light speed, Einstein's equations break down and nothing makes sense

submitted by hfxB0oyA from bigthink.com

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[–]zyxzevn 1 insightful - 2 fun1 insightful - 1 fun2 insightful - 2 fun -  (13 children)

Theoretical physics has locked itself into a corner of not making sense.

Einstein made a huge mistake by promoting the idea that time changes for everything differently, depending on time and space.
This means that even within one thing the time can be different between the front and back of the same thing, causing so many paradoxes.

Einstein also got rid of the basic concepts of global time and global space, which are essential part of the physical world that we see and experience.

What a smart person should have done...
,,is change the idea of relative time with a simple local clock.
The clock-speed defines the speed at which physical forces are experienced.
So if you go fast, the clock goes slower. And the physical forces are experienced slower, making them weaker.
And the clocks do not need to be in sync, because they are not real time.

No mythical time-travel stuff, with exact the same formulas.
Just plain simple.

But why did they promote this time concept, confusing the hell out of everyone?
-> Because they never understood it themselves.

[–]Vulptex 4 insightful - 3 fun4 insightful - 2 fun5 insightful - 3 fun -  (11 children)

Einstein's physics theories predict time dilation, which is pretty much what you described. Not time travel as we think of it, and certainly not into the past. That would only be possible with a wormhole.

Time dilation has been proven, both with experiments on earth and by observing massive objects such as black holes.

[–]ActuallyNot 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (2 children)

Time dilation has been proven, both with experiments on earth and by observing massive objects such as black holes.

Yep.

You have to use it for GPS. The time measurement has to be so precise, that if you don't account for relativistic time dilation from the GPS satellite being in a weaker gravitational field, you get your position wrong.

And without it, you can't explain the advance of Mercury's orbit.

[–]zyxzevn 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 2 fun -  (1 child)

The GPS and Mercury orbit is related to Einstein's gravity. A different Einstein theory: General relativity.
Which he derived from Special relativity, which deals with the speed of light and time.

The first gravity theory of Einstein was about a variable speed of light.
You can get the same GPS and Mercury orbit with it.
And according to RonHatch it is even better, but we never see it discussed.

[–]ActuallyNot 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

Which he derived from Special relativity, which deals with the speed of light and time.

Not quite true. The derivation was independent from special rel.

The first gravity theory of Einstein was about a variable speed of light.

Really?

Contradicting Maxwell's equations?

When was his work on this theory published?

[–]zyxzevn 1 insightful - 2 fun1 insightful - 1 fun2 insightful - 2 fun -  (7 children)

Indeed, in practice it is used as time-dilation in different ways.
But calling it time is a huge mistake.

Black holes do not exist btw.
Here is a full breakdown of all the evidence

[–]Vulptex 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (3 children)

I think you're confused because they try to explain it as time travel. Technically you're always time-travelling forward into the future. But when people hear time travel they think of cars from the 1980s jumping to a different time once they hit 88 mph. Instead Einstein's theories say that speed and heavy mass don't do this, rather they simply slow the existing mechanism of passing time. So if you zoom by a black hole, years could go by in seconds. But in reality you were just moving very slowly through that zone the whole time, so slowly that it took years for a few seconds to pass. You don't just jump into the future. And it certainly won't allow you to go backwards, so no paradoxes.

[–]zyxzevn 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (2 children)

It is also about global time. An event happens at one moment everywhere.
But if we follow Einstein's special relativity to the letter, it seems that something only happens when light has bridged the distance.
This is what all popular science is spewing out.
One would realistically state that some happening only is observed after the light has bridged the distance.

This gets more complicated with the gravity time-dilation.
Btw. I was looking for the evidence for the change in time by gravity,
by taking a clock to a different altitude to a mountain for example.
Do you know of any.

[–]Vulptex 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

It happens before light gets there, you just don't see it happen until it does.

Time dilation has been observed with earth's gravity. It's something like billionths of a second, but apparently enough that satellites have to take it into account.

[–]zyxzevn 2 insightful - 1 fun2 insightful - 0 fun3 insightful - 1 fun -  (0 children)

There are some different models that also explain time-dilation.
And I am looking for some good experimental data.
Like that time changes due to moon's gravity too. And how does it change around earth, on a tower, mountain, under water, north-pole etc.
The Earth's gravity map may be useful. link

There are some important tests that failed. Like on space-time bending.
Like Gravity Probe B failed. https://www.newscientist.com/article/dn13938-gravity-probe-b-scores-f-in-nasa-review/
And they "corrected" it by changing the outcome of the tests towards Einstein's model.

Another problem is that accelerating electric charges experience a magnetic resistance. But they do not experience that in gravity. Which means that electromagnetism is not following the law of acceleration=gravity. I saw someone try to explain it with complex maths, but it is just bad maths.
And there is a lot of bad maths in how the tensors are applied in Einstein's gravity too.

There are many more of such problems, which may point towards a different model.
Like Einstein's variable speed-of-light gravity model

There may be many other models possible.
But first we need to update the observations with the latest most accurate data measurements.
And account for possible other influences. So we get observation based science.

[–]Vulptex 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (2 children)

Black holes are not the only objects with gravity, and therefore not the only objects producing time dilation. Even relatively light objects such as this planet create time dilation; unnoticeable, but enough that it can be observed, much like its curvature.

If there are black holes the effect is much more extreme. So extreme that if you fall into one you'd not only see the entire remainder of history unfold in minutes, but you'd also encounter everything else that's ever fallen into it and ever will fall into it. At that point you'd probably just get ejected from the universe, and a little too late for a reincarnation. If there is "spaghettification", the entire process only takes like 0.1 seconds, which isn't enough time for the sensation to reach your brain. But considering those things suck in things like stars, you'd likely be burned alive before then, so ouch.

[–]zyxzevn 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

There is no real evidence for Black holes
See -> https://thescienceanalyst.substack.com/p/deep-anal-ysis-of-black-holes

[–]Vulptex 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

I saw that. Maybe you're right. But that's irrelevant.

[–]ZekeTheAnt 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (0 children)

Did you realize general relativity is getting cracks ?

I never liked Einstein's theories: for my flavor, his Lorentz-parameters fit sort of "too good".

I'm quite sure relativity will be well be understood, once material science advances with some Bigfoot-boots and not this ant-like, like till now.

Sadly, capitalism, as a system to enrich the rich, hinders this kind of natural progress hard.

I pray, that Musk and Bezos die onboard their "own" rockets. Earlier is better in this context.