Posted on 04/05/2009 8:10:35 PM PDT by betty boop
Yes of course, but the uncertainty doesn't arise because the observation disturbs the system. The uncertainty is inherent to the system.
The point we are making is further described on this Wikipedia: Wave Function Collapse article.
They are not mutually exclusive.
For an observer on earth who is looking at a bright and stationary planet that is 12 light hours away and is above the earth's equator, at the instant that said planet appears in the east will it really be in the west? Will its gravity be pulling in the opposite direction of where the light appears to come from at that instant? LeGrande's Answer: Refuses to answer so far. |
All of your questions appear to be variations on the same theme -- and are occasioned by your misperception that there is a difference between rotation and orbiting.
The page linked byLeGrande in #716 answers all your questions.
Bottom line: for viewers within the universe, both cases are the same. Only an observer outside the system (you, the viewer of the page showing both animations at once) can discern which case (or complex combination of the two) represents reality.
Once you grasp the concept of relativity, it should be obvious that six days from God's viewpoint and billions of years from ours are one and the same -- and that the mind-burps of the medieval Bishop Ussher are totally irrelevant...
We consider philosophy, structures, mathematics, universals/forms etc. and above all these, Logos which is a Name of God.
Logos is a Greek word which is translated to Word, a Name of Jesus Christ as Creator God. The word logos is also the root word for logic.
That extends, in this case, to looking at the information content of the cosmos, of quantum superposition and the translation from quantum (uncertainty) to classical (sensory perceptible certainty) physics. Is Schrodinger's cat dead or alive or both?
The observer is part of the system he is observing. Indeed, his own uncertainty (Shannon entropy) is reduced by virtue of cognition (information, successful communication.)
Currently, quantum decoherence is the popular explanation for apparent wave function collapse - or to put it another way, the apparent selection of a state that we actually perceive in the macro world around us. Alas, the cat is dead to our sensory perception and we shall bury him.
Even so, Everett believes the cat may yet be alive in his many-world cosmology. The quantum superposition continues, it did not actually collapse. In a parallel universe, you did not read this post and instead went to cash in your Power-ball ticket.
In this as in all disciplines of science (e.g. molecular biology) - theory and observations are both subject to interpretation. An appeal to the properties of wave functions does not settle the debate about the observer, certainty/uncertainty, superposition etc.
Too bad I missed this thread last night. I’d have enjoyed participating as it developed.
But, to your observations, I’m not so certain this is as meaningful as it might seem at first blush. Had the universe not been so delicately balanced as to allow life on Earth to have reached the human condition, we wouldn’t be here to observe it. So, it’s a sword that cuts both ways.
I believe in Creation, and believe the perfection of it is one of the many markers of divinity in our physical existence. But, life arising in conditions that encourage it is not, in itself, solely indicative of this.
Of course!
Thanks, bdeaner!
Once you grasp the concept of relativity, it should be obvious that six days from God's viewpoint and billions of years from ours are one and the same..
Which is to say, the ability to transform coordinates mathematically does not constitute a true statement about the cosmos. Space/time exists independent of the observer's choice of a coordinate system. Astronomical observations should confirm the coordinate system, which they do for heliocentricity but not geocentricity.
Of late, I just get bemused when trying to do what you've just done, bemused by envisioning God zooming around, robes a-flappin' in the cosmic debris, eternally limited by the speed of light that he created - darn it! - while trying to get the universe up and running. From an atheist, materialist point of view, He must seem like Santa and his reindeer ... physical nuts and bolts, just plain getting above their raising.
It's just all too funny. That, or depressing. I'm not sure which right now. I guess it depends upon my frame of reference, lol.
No, in fact it demonstrates just the opposite: A rotating frame of reference is not an inertial frame.
Well it so happens that if Pluto is stationary you will need to lead it by 102 degrees if you are shooting that missile from a rotating Earth. There is no difference between the inertial frames as far as the two observers in them are concerned.
Wrong again. If you play the animation in your link, you will note that the person on the merry-go-round does not lead her target, but throws the ball right at him the moment he appears in front of her. You will notice that at each moment during the animation, the ball's instantaneous velocity has it traveling towards the target, and this is true in both frames. However, the stationary target in the INERTIAL frame sees the ball travelling straight at constant velocity (because of the ball's INERTIA), while the rotating thrower sees the ball curve around and follow the target: She observes an ACCELERATION that cannot be accounted for by any real force. This is why the apparent force that would have to be acting on the object to cause the observed acceleration if the rotating frame were indeed inertial (acceleration which is not observed in an inertial frame) is called FICTITIOUS, and this demonstrates that rotating frames are not inertial.
You are correct that you would need to lead a target that is orbiting around you, but you are incorrect in saying that you would need to lead a stationary target if you are spinning. Rotational motion is not relative, and again, the link you provided shows how this can be demonstrated by experiment: The apparent curvature of the ball's trajectory shows the person on the merry-go-round that she is rotating, and since her target is stationary she does not have to lead it. If, on the other hand, she were not spinning and her target were orbiting around her, then she would have to lead the target, because being in an INERTIAL frame, she would see the ball going straight.
Said MrJesse:But there is a vast difference between spinning and being orbited - and that is this: When spinning, the light takes a path from the source to you in a straight line between the source and you. When you are being orbited, the source moves aver emitting the light, and so by the time the light arrives to your eyes, the source has moved and will no longer be where the light's angle causes it to appear to be.Replied LeGrande:take a look at this illustration - http://www.phys.unsw.edu.au/einsteinlight/jw/module1_Inertial.htm
And the answer is: If the duck is moving, then yes, you have to lead. But if both you and the duck are in place and not moving, except the platform you are standing on is rotating, then you do not need to lead because the instant the bullet leaves your barrel, it'll travel in a straight line to the duck. (Assuming, of course, that the tip of your barrel is over the center of the merry go around.)
Why don't you go and do the experiment with your kid, except use a ball instead of shooting him : ) In fact why don't you use a camcorder and demonstrate where the animation is wrong?
You won't get an argument from me : )
We consider philosophy, structures, mathematics, universals/forms etc. and above all these, Logos which is a Name of God.
Yes, let me pick the assumptions and I can logically prove anything : ) Or better yet, let me pick the parameters and I can predict anything : )
Alas, the cat is dead to our sensory perception and we shall bury him.
Schrodinger and Einstein tried their best to disprove QM, but even Schrodinger's kittens couldn't do it.
Even so, Everett believes the cat may yet be alive in his many-world cosmology. The quantum superposition continues, it did not actually collapse. In a parallel universe, you did not read this post and instead went to cash in your Power-ball ticket.
Even the many worlds theory agrees that the wave function collapses. The other universe just had a different result.
An appeal to the properties of wave functions does not settle the debate about the observer, certainty/uncertainty, superposition etc.
Hmm, you are mixing apples and oranges. Certainly the observer in effect helps determine the outcome, but the observer doesn't change the basic principles by the observation.
Great job, Zero Sum. Thanks!Said LeGrande:Replied Zero Sum:
http://www.phys.unsw.edu.au/einsteinlight/jw/module1_Inertial.htm
What it is demonstrating is that there is no difference between being orbited or spinning. It is all about inertial frames of reference.
No, in fact it demonstrates just the opposite: A rotating frame of reference is not an inertial frame.[---snip---]
Hi Hank! I actually found your post searching for old Atlas Shrugged listings. http://www.freerepublic.com/focus/news/1411979/posts
I then went into your posts and found this thread.
The problem with "laws", is now a days, they are MANS laws....which can be interchangeable. God's laws cannot.A lot of so called "Christians" today are blinded by that fact. I use quotes because they aren't really Christians at all. They are fools, being led to slaughter.
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