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Author | Topic: The one and only non-creationist in this forum. | |||||||||||||||||||||||||||||||||||||||
ICANT Member (Idle past 287 days) Posts: 6769 From: SSC Joined: |
Hi oni,
oni writes: The clock on the satellite and the one on the ground read the same time. From your quote: 1. For GPS satellites, GR predicts that the atomic clocks at GPS orbital altitudes will tick faster by about 45,900 ns/day because they are in a weaker gravitational field than atomic clocks on Earth's surface. 2. Special Relativity (SR) predicts that atomic clocks moving at GPS orbital speeds will tick slower by about 7,200 ns/day than stationary ground clocks. When you reduce the effect of GR's 45,900 ns/day by the effect ofSR's 7,200 ns/day you get a net increase of 38,700 ns/day. 3. Rather than have clocks with such large rate differences, the satellite clocks are reset in rate before launch to compensate for these predicted effects. This adjustment is made by.. 4. In practice, simply changing the international definition of the number of atomic transitions that constitute a one-second interval accomplishes this goal. The transition rate is not changed but the definition of the number of atomic transition in a second is changed and called an offset. Therefore the clock on the satellite will run 38,700 ns/day faster than the clock on the surface of the Earth. The changing of the length of a second does not change the transitions of the atomic clock. So what was the point you were trying to make? Time is not a dimension of the universe. Time is a concept of mankind that was invented to measure the duration between events in existence. Which brings us back to existence or non-existence. We exist as does the universe. Either the universe has existed in some form of matter or energy in infinite eternity. OR The universe had a begining to exist in and from non-existence. God Bless,"John 5:39 (KJS) Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me."
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ICANT Member (Idle past 287 days) Posts: 6769 From: SSC Joined: |
Hi Son,
And because Einstein believed the universe had 4 dimensions that makes it a fact. Is that what you are saying? God Bless,"John 5:39 (KJS) Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me."
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onifre Member (Idle past 3210 days) Posts: 4854 From: Dark Side of the Moon Joined: |
Oni writes: The clock on the satellite and the one on the ground read the same time.
ICANT writes: So what was the point you were trying to make? That the clocks will read the same time. The adjustments are made because the observer on the ground will see the clock on the satellite running slower. It was pretty clear.
Time is not a dimension of the universe. That's silly. For that to be true Einstein's equations would have to be wrong and our entire understanding of the universe and modern day physics would have to be wrong, and that's just not the case simply because you're having trouble grasping the concepts. - Oni
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ICANT Member (Idle past 287 days) Posts: 6769 From: SSC Joined: |
Hi No,
NoNukes writes: Does light travel in a straight line as it passes from one substance such as water to another such as air? Do prisms, mirrors, and lenses bend light rays? Isn't that called diffusion of light? God Bless,"John 5:39 (KJS) Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me."
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onifre Member (Idle past 3210 days) Posts: 4854 From: Dark Side of the Moon Joined:
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And because Einstein believed the universe had 4 dimensions that makes it a fact. Einstein proved time was a dimension. The math doesn't lie. The equations make predictions and are confirmed. This is probably the most evidenced of all theories in science and is the basis for modern day physics. - Oni
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NoNukes Inactive Member
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Hi ICANT,
NoNukes writes: Does light travel in a straight line as it passes from one substance such as water to another such as air? Do prisms, mirrors, and lenses bend light rays ICANT writes: Isn't that called diffusion of light? No, those things are not called diffusion. I have described refraction and reflection. But let's pretend that you have properly labeled those phenomena. Of what relevance would that be to the discussion? Is the trajectory of light always a straight line? Are trajectories objects? Is it some kind of fallacy of grammar to discuss a non-object such as a trajectory or a potential trajectory being altered? Of course not. Pretending that they are is just one way of turning an article about physics into an article about semantics and just dismissing the semantics. If you don't like the phrase "time dilation" call it something else, but relabeling does not make reality go away.Under a government which imprisons any unjustly, the true place for a just man is also in prison. Thoreau: Civil Disobedience (1846) The apathy of the people is enough to make every statue leap from its pedestal and hasten the resurrection of the dead. William Lloyd Garrison. If there is no struggle, there is no progress. Those who profess to favor freedom, and deprecate agitation, are men who want crops without plowing up the ground, they want rain without thunder and lightning. Frederick Douglass
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ICANT Member (Idle past 287 days) Posts: 6769 From: SSC Joined: |
Hi oni,
oni writes: That the clocks will read the same time. The adjustments are made because the observer on the ground will see the clock on the satellite running slower. It was pretty clear. How will the observer on the ground see the clock on the satellite runing slower? He/she can't see that far. The data received from the clock on the satellite has been adjusted by 38,700 ns/day to the offset that was accomplished by redefining the second produced by the clock on the satellite. The clock on the satellite does not keep the same time as the clock on the ground. It still runs +38,700 ns/per day compared to the clock on the ground. The only adjustments that was made is that the number of transitions in a second has been changed for the clock on the satellite. We used to have wind up clocks that had a slot in the back with a little lever showing. You could move the lever towards F and the clock would tick faster or towards the S and the clock would tick slower. The atomic clock does not work that way. God Bless,"John 5:39 (KJS) Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me."
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NoNukes Inactive Member |
4. In practice, simply changing the international definition of the number of atomic transitions that constitute a one-second interval accomplishes this goal. Complete and utter nonsense. There is no changing of the international definition of a second involved.
The transition rate is not changed but the definition of the number of atomic transition in a second is changed and called an offset. I know what you are trying to say. But what you are actually saying is completely inaccuate.
Time is a concept of mankind that was invented to measure the duration between events in existence. But this is just silly and pointless denial. It isn't even accurate. How do you use time to measure a duration? Why isn't duration the concept? And even were your statements correct true, they do no mean that time cannot have serve roles than the one initially concevied for it. For example, we can specify a time for your next dental appointment. What duration does that appointment time represent? Absolutely none at all. Instead that time would mark the instant (time coordinate) at which you are scheduled to appear for an event some would consider unpleasant. Yes, we can calculate durations using that coordinate as one of the end points. But the appoint time itself is not a duration. ABE: It's just like you to bust on a poster for saying "see" instead of "discern" or some other verb, and then to make completely inaccurate descriptions of physics in your own posts. Edited by NoNukes, : No reason given. Edited by NoNukes, : No reason given. Edited by NoNukes, : irritationUnder a government which imprisons any unjustly, the true place for a just man is also in prison. Thoreau: Civil Disobedience (1846) The apathy of the people is enough to make every statue leap from its pedestal and hasten the resurrection of the dead. William Lloyd Garrison. If there is no struggle, there is no progress. Those who profess to favor freedom, and deprecate agitation, are men who want crops without plowing up the ground, they want rain without thunder and lightning. Frederick Douglass
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Modulous Member (Idle past 244 days) Posts: 7801 From: Manchester, UK Joined: |
And because Einstein believed the universe had 4 dimensions that makes it a fact. No, he's just pointing out that you can find the information you said you couldn't find, in a book you said you owned:
ICANT writes: I find where it is said General Relativity predicts that clocks in a stronger gravitational field will tick at a slower rate. I don't find where this is cause by a distortion of time. Where have you looked? Have you ever read even a single paragraph of any text on General Relativity? ICANT writes: I have read several books and many papers on GR, SR, and Time Dilation. If you have never read a book that describes gravitational time dilation, then perhaps you should read a bit more prior to criticizing the theory. ICANT writes: I have Relativity: The Special and General Theory, 1920 as well as a few others by Einstein So Son was just pointing at quotes from that book that he thought would help. NoNukes I think gave a more general pointer. I think you both drifted from the original point being raised - but nobody was claiming that Einstein verba, ergo verum est (I can't speak Latin so that's probably horribly wrong). Edited by Modulous, : No reason given.
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Stile Member (Idle past 303 days) Posts: 4295 From: Ontario, Canada Joined:
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ICANT writes: Time is not a dimension of the universe. Time is a concept of mankind that was invented to measure the duration between events in existence. You keep claiming this. And yet, you aren't able to articulate a reason for it to be valid. There is still a simple test available, you can continue whenever you're ready. You don't have to understand higher math, or the foundation of relativity (GR or SR), or how GPS systems work. This test is really very general and basic. There's not too much to it. I'm pretty sure the concept is used in grade school science classes. Maybe highschool.
quote: You seem to have stopped replying to this exercise and merely returned to claiming that time is not a dimension... and then getting lost in the maths and concepts of SR and GR. I can think of a few reasons why: 1. You are trolling: Message 358 2. You are not able to think of any physical thing that does not depend on time. Therefore, you actually do know that time is a dimension, but you won't say so because you think that being wrong on this idea is detrimental to something you hold as an extremely high priority to yourself (I don't know what, or why). Since this test is basic, it's difficult to hide from. The maths and concepts of SR and GR are more complicated, so you think there's a better chance to find a place to hide there. 3. You've decided that the test itself is at fault, therefore all the results are irrelevent. If so, we can discuss the test itself, why the 3 spatial dimensions are required (in basic terminology), and why the 4th temporal dimension is required in the same basic way. Kind of like what is done in Message 436. 4. You have a lot of people posting to you, and you have to make some cuts because you're only one man. It's okay, the test won't disappear or anything. Feel free not to respond for months or years even, if needed. Sometimes I can get impatient... but that's my problem, not yours. ICANT writes: Either the universe has existed in some form of matter or energy in infinite eternity. OR The universe had a begining to exist in and from non-existence. You keep coming back to this, ending your posts with it and such... as if it's a big important point or something.What do you think it means? I mean, it's wrong.. and it's been shown to be wrong. But I really don't even see why it matters?Let's say it's totally correct. You're awesome and these are the only two options possible. What does that mean? Anything? Is there some fantastic truth of the ages you think this proves? Do you think this somehow shows that God exists or that the Bible is true or something like that? Or is it simply "if this is true, then ICANT's pet theories about the universe are correct, and ICANT can sleep well at night"? Even though it doesn't really have anything to say about anything larger than you having a smile on your face? We do have a humour thread, if that's what you're looking for... I just don't see why you're defending any of this and constantly returning to that one point anyway. Is there a reason?
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Son Goku Inactive Member
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No, of course it doesn't.
However the fact that a theory which assumes time is a physically real dimension (the quotations from the man who made the theory should be strong enough evidence of that) is also supported by all experimental evidence, to the stage that it is the single most confirmed theory in physics, does suggest, quite strongly, that it is a fact.
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Son Goku Inactive Member |
Modulous writes:
We're well off at this point I think were currently on a tangent of a tangent of the main topic of the thread!
I think you both drifted from the original point being raised
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NoNukes Inactive Member
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As I understand it, the thrust of the thread is that physics is best understood by people who know diddly-squat about the topic.
Under a government which imprisons any unjustly, the true place for a just man is also in prison. Thoreau: Civil Disobedience (1846) The apathy of the people is enough to make every statue leap from its pedestal and hasten the resurrection of the dead. William Lloyd Garrison. If there is no struggle, there is no progress. Those who profess to favor freedom, and deprecate agitation, are men who want crops without plowing up the ground, they want rain without thunder and lightning. Frederick Douglass
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New Cat's Eye Inactive Member
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You seem to have stopped replying to this exercise and merely returned to claiming that time is not a dimension... and then getting lost in the maths and concepts of SR and GR. I can think of a few reasons why: 1. You are trolling: Message 358 I'd like to call it pseudo-trolling. He's just looking for slow pitches to swing at... Here's my assessment of ICANT from about 18 months ago, from Message 427:
quote: And this is from the thread Straggler linked to earlier, from over 3 years ago, Message 310 quote:
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ICANT Member (Idle past 287 days) Posts: 6769 From: SSC Joined: |
Hi Son,
Son Goku writes: Yes. The form of discrepancy between the clocks that is called gravitational time dilation is said by General Relativity to be caused by the distortion/stretching of time. General Relativity predicts the discrepancy using the idea that time is stretched. So time is streached which you call time dilation. The folks that work with the atomic clock at Bolder has a paper NIST Cesium Fountains — Current Status and Future ProspectsS.R. Jefferts, T.P. Heavner, T.E. Parker, J.H.Shirley NIST — Time and Frequency Division In which they state.
quote: They also said:
quote: So the higher from the geoid the clock is placed the faster the fountain clock runs. That tells me that the 38,700 ns/day is caused by the clock being higher from the geoid. In other words it is higher in a weaker gravatational potential than the clock on the Earth's surface and because of that gains 38,700 ns/day over the clock on the Earth's surface. In a paper Global Position System Receivers and Relativityby Neil Ashby and Marc Weiss of Time and Frequency Division Physics Laboratory National Institute of Standards and Technology They make the following statement.
quote: Maybe these people have no idea what they are talking about, but I doubt it as they work with the real atomic clocks at Bolder. God Bless,"John 5:39 (KJS) Search the scriptures; for in them ye think ye have eternal life: and they are they which testify of me."
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