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Author Topic:   Relativity is wrong...
Parasomnium
Member
Posts: 2224
Joined: 07-15-2003


Message 421 of 633 (520731)
08-23-2009 3:44 PM
Reply to: Message 420 by NosyNed
08-23-2009 10:12 AM


Re: Good luck
NosyNed writes:
a little luck doesn't hurt either
If it's an exam about physics no amount of luck is going to be enough.

"Ignorance more frequently begets confidence than does knowledge: it is those who know little, not those who know much, who so positively assert that this or that problem will never be solved by science." - Charles Darwin.

This message is a reply to:
 Message 420 by NosyNed, posted 08-23-2009 10:12 AM NosyNed has not replied

  
greyseal
Member (Idle past 3887 days)
Posts: 464
Joined: 08-11-2009


Message 422 of 633 (520740)
08-23-2009 4:26 PM
Reply to: Message 419 by Smooth Operator
08-23-2009 9:08 AM


Re: Try Again....
wow, just wow.
Baseless ad hominem attacks on a poster should not only be discouraged but be against the rules. Thank goodness it's not a baseless attack when I call you an absolute ignoramus who is shockingly, delusionally ignorant of even the simplest of the laws of physics. It's not ad hominem to point out the truth.
If you had one whit of the intelligence of any of the great men and women whose name you besmirch you'd realise that even the ancient greeks about 2000 years ago worked out the world was a sphere, a ball. they didn't know why, but they knew (or at least strongly suspected) that it was.
If you had one jot of the intelligence of the great men and women you sully with your stupidity you would realise that Galileo spent a good part of his life trying to work out just why the motion of the planets had to be so complex when everything else was so simple - and why he favoured copernicus' model over the geocentric model.
Go away until you have studied the facts yourself with even a shade of the discipline and the intellect shown through history.

This message is a reply to:
 Message 419 by Smooth Operator, posted 08-23-2009 9:08 AM Smooth Operator has not replied

Replies to this message:
 Message 423 by Admin, posted 08-23-2009 4:33 PM greyseal has not replied

  
Admin
Director
Posts: 13032
From: EvC Forum
Joined: 06-14-2002
Member Rating: 2.1


Message 423 of 633 (520741)
08-23-2009 4:33 PM
Reply to: Message 422 by greyseal
08-23-2009 4:26 PM


Re: Try Again....
greyseal writes:
Baseless ad hominem attacks on a poster should not only be discouraged but be against the rules. Thank goodness it's not a baseless attack when I call you an absolute ignoramus...
I believe that if you check the Forum Guidelines you'll find that unfortunately no exception cases are spelled out where ad hominem is permitted. "Try Again" is an appropriate subtitle, because I really wish you would edit your post to tone it down a bit. No big deal if you choose not to, but in any event, in the future please ad hominet no more.

--Percy
EvC Forum Director

This message is a reply to:
 Message 422 by greyseal, posted 08-23-2009 4:26 PM greyseal has not replied

  
Smooth Operator
Member (Idle past 5139 days)
Posts: 630
Joined: 07-24-2009


Message 424 of 633 (522897)
09-06-2009 8:14 AM
Reply to: Message 420 by NosyNed
08-23-2009 10:12 AM


Re: Good luck
quote:
Good luck with the exams. I'm sure you're ready but a little luck doesn't hurt either.
Thanks, but, as fate would have it, I didn't have enough luck this time!

This message is a reply to:
 Message 420 by NosyNed, posted 08-23-2009 10:12 AM NosyNed has not replied

  
Smooth Operator
Member (Idle past 5139 days)
Posts: 630
Joined: 07-24-2009


Message 425 of 633 (522901)
09-06-2009 9:00 AM
Reply to: Message 416 by Admin
08-22-2009 7:12 AM


Re: Try Again....
quote:
Hopefully you're not playing rhetorical games with the word "definite." Evidence that the Earth is neither the center of the universe or solar system has been provided throughout this thread. There's no particular specific approach to responding that you have to take, but you do have to respond somehow. You can't just pretend no evidence was presented.
I will now explain in detail why what was presented was not what it was claimed to be. But to first clear things up, no, I am not asking anyone to show me definite proof of anything. Because I know that is not possible. But the person I was replying to said that we definitely know thaz the Earth was moving. So, since he used the word definitely, I used it too. Even though I am well aware that science does not deal with definites.
quote:
Perhaps you believe the evidence is inadequate, and in that case it is incumbent upon you to explain how. Just to pick one post at random, in Message 365 DevilsAdvocate provided evidence, but you never responded. So one possible approach you could take would be to explain how the presented evidence is inadequate. Perhaps it is inconclusive or has been misinterpreted.
Actually, I did respond, but never mind. I am going to do it again, in full detail.
The problem witht he presented eveidence is that they are not really evidence. They are interpretations. And interpretations can go any way. I will now explain using this analogy.
Imagine if you were in a train. But this train had no windows. If the train was moving, how would you know? You basicly feel no motion, so you do not know if you are moving or not. But you really want to find out if you are moving or not. So, what is your starting logical assumption? Well, obviously, if you don't feel any movement, you will assume for starters, that you are not moving. Right?
The same goes for the Earth. We do not feel that we are moving. So our first logical assumption is that we are not moving. This is nod evidence that we are not moving. This is not a fact, that we are not moving, this is just our starting assumption. Becasue we have no good reson to think that we are moving. The same goes for the train in which you are located and you are feeling no movement.
The problem with heliocentrists is that they assume movement. That is their starting assumption. But the problem is, they have no logical reson for this. Yes, you could also assume that you are actually moving in a train that you do not feel any movement, but you have no real reason for doing so.
And from this assumption, heliocentrists, interpret all the observational facts. And this leads them to the false conclusion that all the observations actually confirm the moving Earth. But they can just as well be explained in the non-moving Earth model. So why pick one, over the other?
Obviously you first have to have independent evidence that we are either moving, or not, to use observational evidence for or against the moving Earth model.
So let's see how this false assumption guides a heliocentrist's thought. DevilsAdvovate claims:
quote:
1. Stellar abberation- apparent yearly motion of all celestial objects in the Earth's sky caused by the Earth's velocity around the Sun.
How does he know that this otion is caused by Earth's motion in the first place? It could just as well be caused by the rotating universe! He has no independent evidence from the observation to be able to prefer one explanation over the other. You see, the observable fact of abberation is equally explainable by both moving and non moving Earth. And this two explanations are polar opposites. So in this case, the observable evidence is NOT evidence for any of thses two positions. It's only an interpretation for either one or the other model. You first have to have evidence independent of the observation that the Earth is either moving or not, and than claim your observational evidence is caused by either moving or non Moving Earth. Untill you have that, your "evidence" is not evidence, but an interpreation. And as we shall see, the same goes for all the so called evidence.
Think of it this way. You are still in that train I was talking about. But now, you discover a hole on the top of the train car! You put your hand through the hole, and guess what? You feel the air passing you! And you conclude, that in fact, yes, the train is moving!
Is this a good conclusion? Well, no, obviously not. Why?
Well, even a primary school logic would tell you that the train could also be standing still, but that it is the wind that is blowing! Because it just happens to be windy today. So you see, the air that you feel on your hand passing it, can be explained by both moving and non moving train model, and both models are polar opposites. So the air that is passing your hadn is not evidence for any model. It's just an interpretation, untill you actually have independent evidence that it is the train that is moving, or standing still. Only that can you claim that the passing air is caused by one of the models.
Do you see now how this applies to the moving and non moving Earth models? It's the same thing.
quote:
2. Parallax of nearby celestial objects due to the Earth's orbit around the Sun.
Again, notice the starting assumption. He claims that the parallax is caused by the moving Earth? But what independent evidenec has he got to claim such a thing? None, obviously. The same can be explained by the stars themselves moving to create the observed parallax.
quote:
3. Doppler affect of planets, stars, etc as Earth orbits the Sun and increase and closes the distance between these objects.
Notice the same starting assumption that the Earth is moving without any independent evidence for it's movement. Do you see how this is actually a form of circular logic?
1.) Assumption is that the Earth is moving.
2.) Observation is that planets are sometimes closer to Earth than other times.
3.) Conclusion is that this is caused because the Earth is moving!
This is circular reasoning because it starts with the assumption that the Earth is moving and uses this assumption to explain the observation that is than claimed to be the evidence for the moving Earth in the first place!
Not only that, but in the Tychonic geocentric model as the Sun goes around the Earth, the other planets go around the Sun. So as they go, they are obviously going to be coming near the Earth at one time, and go farther away from the Earth at other times. So this is also explainable in the non moving Earth model.
quote:
4. Annual observation of various meteor showers i.e. Leonid, etc caused by Earth's orbit crossing the dust trails of past comets and other debris.
Please notice againt he starting assumption that causes this circular reasoning. The starting assumption is that the Earth is moving, and that it's moviement causes Earth to go through dust of meteor showers. Could this alos not be explainable by a rotating universe in which showers of meteors go from one place to another becasue the centrifugal force of the rotating cosmos? And than, this dust passes the Earth? Obviously it can.
So as you can clearly see, as I have said at the beginning, there is no evidence that the Earth is actually moving. All the evidence is actually an interpretation, based on a starting assumption that the Earth is actually moving. So this is basicly circular reasoning.
quote:
Also, it would be helpful if you could see your way clear to abandon the argument that the superficial appearance from the Earth's surface that the sun orbits the Earth is evidence for geocentrism. It sort of takes the argument back to the stone age. That one can be fooled about who is in motion is known to everyone. There's a jarring subway train experience that is probably familiar to most. I can't count the number of times I've been sitting in a New York subway train looking out the window and believing we were beginning to move because the windows of the adjacent train had begun moving by, only to jarringly discover that it was the other train that was moving as it disappears to reveal a stationary platform.
I'm simply requesting, not demanding, that you abandon this argument. You do not have to abandon it, but if you continue to use it then please do not pretend you're unaware that a rotating Earth produces the same apparent motion of the sun in the sky. This would be consistent with the clarity and openness necessary for moving a discussion productively forward.
Actually, I'm not using this as my evidence for geocentrism. I would never use it that way, and that would indeed be like arguing on a stone-age level.
What I'm actually saying is that us not feeling any movement, and seeing other objects orbit around us, is my starting assumption, not evidence. And I believe that it is a logical starting assumption. Just like in a train I explained obeve in ehich you ahd no windows, and you felt no movement.
I use this argument because I'm trying to explain to the heliocentrists that they are using the wrong starting assumption. They are using the starting assumption that the Earth is actually moving from the start! And they have no reason to! Just like in the train with no windows. Yes, it could be moving, but how do you know? You don't, and both for the train, and the Earth you can't just assume that it is moving in the first place, and than use all the observational evidence and interpret them from the moving Earth model, and say that they are actually evidence for the moving Earth. When they can be equally well explained by the model that is the polar opposite of the moving Earth model.

This message is a reply to:
 Message 416 by Admin, posted 08-22-2009 7:12 AM Admin has seen this message but not replied

Replies to this message:
 Message 430 by dogrelata, posted 09-06-2009 3:46 PM Smooth Operator has not replied
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Smooth Operator
Member (Idle past 5139 days)
Posts: 630
Joined: 07-24-2009


Message 426 of 633 (522903)
09-06-2009 9:02 AM
Reply to: Message 413 by dogrelata
08-22-2009 3:15 AM


quote:
So in your model of the universe, you choose to place the earth at the centre and have everything else revolve around it. What, therefore, would you expect to observe if you were to be transported to another planet, in some far flung corner of the universe? How would what you observe differ from what you see when you look out into the skies every night on this planet?
You would see other planets moving. And you would also see the Earth rotating. The Earth's rotating would actually be caused by your planet's movement arounf the Earth.

This message is a reply to:
 Message 413 by dogrelata, posted 08-22-2009 3:15 AM dogrelata has replied

Replies to this message:
 Message 429 by dogrelata, posted 09-06-2009 2:30 PM Smooth Operator has replied

  
Smooth Operator
Member (Idle past 5139 days)
Posts: 630
Joined: 07-24-2009


Message 427 of 633 (522909)
09-06-2009 9:19 AM
Reply to: Message 414 by DevilsAdvocate
08-22-2009 5:48 AM


quote:
And we see exactly the same phenomena of celestial objects going around in circles on the moon, on Mars, and every other celestial body that rotates.
However, we do not see this effect from spacecraft, etc that are not rotating around an axis.
Please explain.
You are not supposed to see it because the said spacecraft is not orbiting the Earth. It has a different path and therefore a different reference frame. If it is going in the different direction that the rotation of the universe, than no, you wont' observe what you expent. If the spacecraft takes the referene frame of the Sun, you are going to see the Earth orbit the Sun. It's very simple really.
quote:
Oh yes, I already know, the mystical undetectable revolving universal shell which you can provide no evidence of its existance.
If you cannot provide evidence for its existence, guess what. It probably doesn't exist.
Just because you refuse to read my posts in full doesn't mean I didn't provide the evidence and expalined it houndreds of times already.
Read this:
EvC Forum: Message Peek
quote:
Evidence is wasted on you.
We have provided evidence throughout this entire thread. You just choose to ignore it.
Go back and reread all the posts and you will see the evidence.
I do not want to go through this again. You showed me interpretations. Go and read the my last reply to the Admin. I explained in full detail why your evidence is based on circular logic. And is at best an interpretation, and not evidence.
quote:
The procession of stars through the sky every night. What I mean is that if you observed the stars every night you would see that the same stars do not show up in the same position at the same time every night. You will se a slow procession of stars as time goes by. That is each star rises 4 minutes earlier each night, about 2 hours earlier in a month.
If the Earth were the center than that means your entire sphere would be spinning around once every 24 hours around the Earth. The movement I talk about would be independent of the daily rotation of the sphere. How can a sphere of stars rotate around the Earth in 24 hours yet slowly shift through the night sky (and day sky if we could see it) in circuit over the course of 365 days?
It's very simple. There are variations to some degree in all rotations. The same goes for the Sun and the Moon. Tehy are both orbiting at about, not exactly 24h a day around the Earth. Since they are not totally in sync, we can see an eclipse sometimes, because the Moon covers the Sun. The same goes for teh stars, they are rotating about 24h a day around teh Earth. Not exactly 24 hours, but a bit faster. There is nothing strange in that, the basic 24 h period is an approximation.

This message is a reply to:
 Message 414 by DevilsAdvocate, posted 08-22-2009 5:48 AM DevilsAdvocate has replied

Replies to this message:
 Message 436 by DevilsAdvocate, posted 09-08-2009 10:43 PM Smooth Operator has replied

  
Smooth Operator
Member (Idle past 5139 days)
Posts: 630
Joined: 07-24-2009


Message 428 of 633 (522911)
09-06-2009 9:26 AM
Reply to: Message 417 by Straggler
08-22-2009 8:35 AM


Re: Try Again....
quote:
If you apply a 1N force to a block of steel (or whatever other "heavy" object you have in mind) in space where there are no frictional forces what do you think happens?
Well, but there obviously are forces that are exerted on the Earth! Remember the Lense-Thirring effect I was talking about some time ago. The rotation of the shell is causing the coriolis forces on the Earth. And that is keeping the Earth in place.
quote:
Why would F=ma apparently not apply in your model? And do you really think the gravitational force between the Earth and the Sun is so insignificant?
Of course it applies. Yes, it seems so. Other planets do not exert enough force to Move the Earth anywhere. If they did, we would see crazy and non-uniform movements of the objects in the sky.
quote:
Your whole model assumes that the earth is somehow resolutely pinned to the centre of the universe. But you provide no means at all of equilibriating all the gravitational forces acting on the earth such that it retains this position. Your silly model fails even on it's own silly terms. It isn't even internally consistent. Even if we conveniently ignore all of the other observational difficulties others have pointed out.
You can keep saying that but Barbour and Bertotti's model has explained, and I showed you hat you wanted to see, how Newtonian physics would be expressed near the sun in a Machian universe. Everything works just fine.
Now, about that part where I asked you to show me some equations that show that universe won't fall apart in the GR model, where are they?
Edited by Smooth Operator, : No reason given.

This message is a reply to:
 Message 417 by Straggler, posted 08-22-2009 8:35 AM Straggler has replied

Replies to this message:
 Message 435 by Straggler, posted 09-08-2009 6:15 PM Smooth Operator has replied

  
dogrelata
Member (Idle past 5338 days)
Posts: 201
From: Scotland
Joined: 08-04-2006


Message 429 of 633 (522930)
09-06-2009 2:30 PM
Reply to: Message 426 by Smooth Operator
09-06-2009 9:02 AM


Smooth Operator writes:
You would see other planets moving. And you would also see the Earth rotating. The Earth's rotating would actually be caused by your planet's movement arounf the Earth.
Based on your own argument, that couldn’t be your starting assumption though, could it? Using your own logic, your starting assumption would have to be based on what you observe — the other planet is fixed and at the centre of a rotating universe, which includes planet earth orbiting both the sun and your new-found home.

This message is a reply to:
 Message 426 by Smooth Operator, posted 09-06-2009 9:02 AM Smooth Operator has replied

Replies to this message:
 Message 438 by Smooth Operator, posted 09-09-2009 3:25 PM dogrelata has not replied

  
dogrelata
Member (Idle past 5338 days)
Posts: 201
From: Scotland
Joined: 08-04-2006


Message 430 of 633 (522933)
09-06-2009 3:46 PM
Reply to: Message 425 by Smooth Operator
09-06-2009 9:00 AM


Re: Try Again....
Smooth Operator writes:
Could this alos not be explainable by a rotating universe in which showers of meteors go from one place to another becasue the centrifugal force of the rotating cosmos? And than, this dust passes the Earth? Obviously it can.
Rotating universe? Centrifugal force? I forgot to ask; in your hypothesis, what is the shape of the universe — spherical, cylindrical or something more exotic?

This message is a reply to:
 Message 425 by Smooth Operator, posted 09-06-2009 9:00 AM Smooth Operator has not replied

Replies to this message:
 Message 431 by greyseal, posted 09-08-2009 5:48 AM dogrelata has replied

  
greyseal
Member (Idle past 3887 days)
Posts: 464
Joined: 08-11-2009


Message 431 of 633 (523059)
09-08-2009 5:48 AM
Reply to: Message 430 by dogrelata
09-06-2009 3:46 PM


Re: Try Again....
dogrelata writes:
Smooth Operator writes:
Could this alos not be explainable by a rotating universe in which showers of meteors go from one place to another becasue the centrifugal force of the rotating cosmos? And than, this dust passes the Earth? Obviously it can.
Rotating universe? Centrifugal force? I forgot to ask; in your hypothesis, what is the shape of the universe — spherical, cylindrical or something more exotic?
You know, it really boils my noodle to have somebody handwave away motion of planets, meteors and everything else without any justification, without any sort of effort to actually quantify their motion, without any sort of observational facts, and yet have that somebody expect their hair-brained handwavium be taken seriously.
we can see the planets moving, and the apparent motion of the sun. we can see moons around the other planets (they obviously orbit).
Now, occams razor says (and forgive me, you nitpickers) choose the simplest option.
The motion of the moons around the planets (and our moon around our planet) is really, really simple - a circle (more or less).
The motion of the planets and sun? really, really complicated...unless you assume that the sun is the center.
At that point, we can not only display an accurate representation of where everything IS, but where everything WILL be, and explain phenomena such as partial and total eclipses - NOT only for our planet but for ALL planets.
And not only can we do that, but predict PRECISELY when they will occur.
Having displayed this simple idea - the orbits of the heavenly bodies explaining ALL the difficulties in their APPARENT motion, shouldn't we ALL have enough sense to agree with the model, PURELY because it fits ALL of the facts?
I don't think there is a SINGLE fact not accounted for by Newton's law of universal gravitation and the heliocentric solar-system - NOT a heliocentric universe, NOT a geocentric solar system and CERTAINLY not a geocentric universe.
If one were to talk about relativity, well Einstein is the master of that phrase, and anyone who wants to dispute it had better be at least as smart as Einstein, because few others are capable, and certainly nobody who's an armchair know-it-all.

This message is a reply to:
 Message 430 by dogrelata, posted 09-06-2009 3:46 PM dogrelata has replied

Replies to this message:
 Message 432 by dogrelata, posted 09-08-2009 7:13 AM greyseal has replied

  
dogrelata
Member (Idle past 5338 days)
Posts: 201
From: Scotland
Joined: 08-04-2006


Message 432 of 633 (523077)
09-08-2009 7:13 AM
Reply to: Message 431 by greyseal
09-08-2009 5:48 AM


Re: Try Again....
Ershouldn’t you be addressing your comments to Smooth Operator, who seems to be the only one around here who believes any of what he is suggesting?

This message is a reply to:
 Message 431 by greyseal, posted 09-08-2009 5:48 AM greyseal has replied

Replies to this message:
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greyseal
Member (Idle past 3887 days)
Posts: 464
Joined: 08-11-2009


Message 433 of 633 (523090)
09-08-2009 10:54 AM
Reply to: Message 432 by dogrelata
09-08-2009 7:13 AM


Re: Try Again....
Ershouldn’t you be addressing your comments to Smooth Operator, who seems to be the only one around here who believes any of what he is suggesting?
I'm agreeing with you and adding my own sense of frustration
sorry if it wasn't obvious.

This message is a reply to:
 Message 432 by dogrelata, posted 09-08-2009 7:13 AM dogrelata has not replied

  
Perdition
Member (Idle past 3263 days)
Posts: 1593
From: Wisconsin
Joined: 05-15-2003


Message 434 of 633 (523128)
09-08-2009 3:04 PM
Reply to: Message 425 by Smooth Operator
09-06-2009 9:00 AM


Re: Try Again....
The problem with heliocentrists is that they assume movement. That is their starting assumption. But the problem is, they have no logical reson for this. Yes, you could also assume that you are actually moving in a train that you do not feel any movement, but you have no real reason for doing so.
Nope. Geocentrism was the starting point assumption. It was seen as the most logical assumption based on exactly what you said: we don't feel movement. The problems became the fact that we started collecting observations that made the geocentric model untenable. Sure, you can finagle things to make it come out, but the math gets very complicated, convoluted, and begs the question, "Why would nature be so grossly complex and arbitrary here?"
Copernicus came along and, by the relatively large conceptual leap of putting the sun at the center, made the math a lot easier, made the complexity come way down, and made the universe seem far less arbitrary. Observations continued, and it became rather obvious that the sun wasn't the center of everything afterall, it was becoming more complex and unnecessarily arbitrary as we looked farther and farther out. It was then discovered, through a less revolutionary leap, that the sun was also moving through space around the center of our galaxy and that there are many such galaxies out there that are moving in various directions. Finally, along came a guy named Einstein who basically said that there is no "special place" in the galaxy. Making the arbitrariness that had plagued previous models completely obsolete.
So, the starting assumption, especially when you look at a newborn child, up through their early school years, is that the Earth stays put and the sun rises. We then make observations that give rise to doubts about that simplistic idea when it becomes obvious that what we thought was simple turns out to be almost impossible to work out when we take into account all the observations made over the course of centuries.
What you're advocating is, let's either dismiss those observations as misinterpreted, or go back to an unnecessarily complex mathematical model of the universe that retains our special place without any reason to do so.
The fact remains, we can model the Universe with any point as an arbitrary center, but picking points thusly makes the math complex and convoluted. When we remove that bias, the math falls into place elegantly and in a relatively simple manner. Considering all that, doesn't it make sense to at least act as if there is no center, if only to make mathematicians' lives easier? Why are you so biased against mathematicians that you would want them to spend days working on a trajectory that assumes the Earth is the center when they can hammer one out before lunch if we assume the sun is the center of the solar system?
Imagine if you were in a train. But this train had no windows. If the train was moving, how would you know? You basicly feel no motion, so you do not know if you are moving or not. But you really want to find out if you are moving or not. So, what is your starting logical assumption? Well, obviously, if you don't feel any movement, you will assume for starters, that you are not moving. Right?
So, the train moves, you don't feel movement, and you have no way of knowing. You then exit the train and you are in a completely different place from where ypou started. You have three possiblilities:
1) The train moved, despite your inner ear being fooled by incredibly smooth movement and no outside references.
2) The Earth moved under the train, all the animals, plants, people, stars and everything decided for no real reason that they wanted to move under you in random and different directions.
3) The Earth completely rearranged itself, not moving per se, but just reshaping.
You're advocating for number 2, when the easiest assumption based on the evidence is 1.
Your example also falls apart when we give the options of windows. Since we can see out into the universe, we can see things moving. We see the telegraph poles flying past, the tracks sliding under us. and the more distant objects moving slower, but still noticably, past the window.
We're still left with the top two options above, the third one being provisionally ruled out by the apparant motion.
Again, you're advocating for number 2, despite being able to notice that the people who appear to be flying past aren't looking bewildered, aren't losing their balance, and are, in fact, moving as if they are watching you move past them. Again, the parsimonious answer is that you were the one moving, despite not being able to feel it, and the fact that you can come up with complex mathematical formulae that will work out with you not moving, and some sort of story about the people not noticing.
Edited by Perdition, : Added second quote from SO and response.

This message is a reply to:
 Message 425 by Smooth Operator, posted 09-06-2009 9:00 AM Smooth Operator has replied

Replies to this message:
 Message 439 by Smooth Operator, posted 09-09-2009 3:44 PM Perdition has replied

  
Straggler
Member (Idle past 91 days)
Posts: 10333
From: London England
Joined: 09-30-2006


Message 435 of 633 (523173)
09-08-2009 6:15 PM
Reply to: Message 428 by Smooth Operator
09-06-2009 9:26 AM


Re: Try Again....
Well, but there obviously are forces that are exerted on the Earth! Remember the Lense-Thirring effect I was talking about some time ago. The rotation of the shell is causing the coriolis forces on the Earth. And that is keeping the Earth in place.
You have provided no force that will keep the Earth at the centre of the universe regardless of other competing forces without also resulting in other masses clumping together at the centre of the shell. Why is the Earth the only body that is forced to the centre?
Straggler writes:
Why would F=ma apparently not apply in your model? And do you really think the gravitational force between the Earth and the Sun is so insignificant?
Of course it applies. Yes, it seems so. Other planets do not exert enough force to Move the Earth anywhere. If they did, we would see crazy and non-uniform movements of the objects in the sky.
If Newton's second law applies and Newton's law of gravitation applies then there are numerous forces that would disrupt the Earth from it's static position at the centre of the universe unless you can show that an equal but oppoiste force is always present at all times. This you have not done.
You can keep saying that but Barbour and Bertotti's model has explained, and I showed you hat you wanted to see, how Newtonian physics would be expressed near the sun in a Machian universe. Everything works just fine.
Only if you assume that the Earth is fixed by duc tape and turtles at the centre of the universe.
Now, about that part where I asked you to show me some equations that show that universe won't fall apart in the GR model, where are they?
I have proposed no alternative model. I have simply exposed the assumptions and flaws in yours.
Edited by Straggler, : No reason given.

This message is a reply to:
 Message 428 by Smooth Operator, posted 09-06-2009 9:26 AM Smooth Operator has replied

Replies to this message:
 Message 437 by Percy, posted 09-09-2009 7:11 AM Straggler has not replied
 Message 440 by Smooth Operator, posted 09-09-2009 3:50 PM Straggler has replied

  
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