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The universe appears "old", but it is still less than 10,000 years old
RE: The universe appears "old", but it is still less than 10,000 years old
all that has to be done by the 'young earthers' is to relax the requirement that every mention of 'day' mean the 24 hour solar day. for instance, the ref. to 'morning' and 'evening' in genesis 1 are not solar days since there is no sun or moon until the fourth creation day.
Atheist Credo: A universe by chance that also just happened to admit the observer by chance.
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RE: The universe appears "old", but it is still less than 10,000 years old
This reminds me of the nut jobs who believe that dinosaur fossils were planted by Satan to deceive us. You should ask your friend why God is so deceiving that he would give us inquisitive minds only to mislead us from the truth.
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RE: The universe appears "old", but it is still less than 10,000 years old
(January 6, 2014 at 12:25 am)orogenicman Wrote: Are you suggesting that the speed of light is not natural?

The one-way speed of light in any given direction is stipulated by man as long as the round trip speed remains the experimentally verifiable value, this is a core principle of special relativity.

“That light requires the same time to traverse the path A → M as for the path B → M is in reality neither a supposition nor a hypothesis about the physical nature of light, but a stipulation which I can make of my own freewill in order to arrive at a definition of simultaneity.” -Einstein 1961, p. 23 [emphasis is in the original]



Quote: You're the one who considers the one-way speed of light to be instantaneous (and thus magically affects the age of the universe) sans any supporting evidence whatsoever. Congratulations.

Yes, using this convention it moves at an infinite speed towards the observer, meaning we witness cosmic events in real-time. Imagine that.

Quote:And of course, you know someone who is infallible, right? (This should be entertaining)

Nope, but the person I cited had the proper credentials. You missed the second part of that for some unknown reason.

Quote:And yet he seems (or rather, judging from your claim) rather ignorant of the facts, as pointed out already:

http://www.religionfacts.com/judaism/denominations.htm For instance, according to a 1990 nationwide survey, 7 percent of American Jews are Orthodox. And like you and your fundy brothers and sister, they got Genesis wrong as well.

You claimed that only evangelical Christians believe in a literal Genesis, so I only needed to point to one Jew who also does in order to refute that claim. Consider it refuted, even by your own facts above ironically enough. Tongue

Quote:If there are (and there may well be), they aren't trying to cause permanent damage to our education system by demanding that it be taught in our science classrooms?

Are you asking me that? Your initial claim was wrong, evangelical Christians are not the only ones who believe in a literal Genesis. You’re also forgetting Reformed Christians, Mormons, many Muslims, and Jehovah’s Witnesses as well.

Quote:Extraordinary claims, O' warped one.

Yes, in this instance naturalism is the extraordinary claim since the majority of people reject it.

Quote:You have my sympathies. Truly.

You feel sorry for me because I am a Calvinist? Please don’t.

Quote:Excuse me? Where in that article does it make the claim that light travels instantaneously? Moreover, where in that article is there an equation that provides a proof that light can travel instantaneously? What it does say is this:

I hate having to always hold your hand through this.

Even in the first paragraph!

Though those experiments don't directly establish the isotropy of the one-way speed of light, because it was shown that slow clock-transport, the laws of motion, and the way inertial reference frames are defined, already involve the assumption of isotropic one-way speeds and thus are conventional as well.[4] In general, it was shown that these experiments are consistent with anisotropic one-way light speed as long as the two-way light speed is isotropic.” [Emphasis added by SW]

The equations are located in the section entitled, “Generalizations of Lorentz transformations with anisotropic one-way speeds”.

In that section it clearly states…

“κ can have values between 0 and 1. In the extreme as κ approaches 1, light might propagate in one direction instantaneously, provided it takes the entire round-trip time to travel in the opposite direction.”

“Using generalizations of Lorentz transformations with anisotropic one-way speeds, Zhang and Anderson pointed out that all events and experimental results compatible with the Lorentz transformation and the isotropic one-way speed of light, must also be compatible with transformations preserving two-way light speed constancy and isotropy, while allowing anisotropic one-way speeds.” [Emphasis added by SW]


Quote:To date, all experimental results agree with special relativity within the experimental uncertainty.

How disingenuous can you really get? I’ll quote the entire paragraph you quoted from which clearly states it is dealing with anisotropic two-way speeds in test theories that are different from special relativity and not merely an anisotropic one-way speed convention that is equivalent to special relativity.

“Theories not equivalent to special relativity
Test theories
A number of theories have been developed to allow assessment of the degree to which experimental results differ from the predictions of relativity. These are known as test theories and include the Robertson and Mansouri-Sexl[9] (RMS) theories. This test theory uses Einstein synchronization in a "preferred" frame, while all other frames take over the value of this "preferred" frame by "external synchronization". However, this alone does not provide any testable deviation from special relativity, therefore they included additional parameters, making the two-way speed of light anisotropic in this model. To date, all experimental results agree with special relativity within the experimental uncertainty”



Quote:


[/quote]

Definitions are descriptive; they are not normative so this argument fails. It is completely legitimate to stipulate a one-way speed of light that is instantaneous when moving towards the observer. You’re wasting your time arguing against a convention.

(January 6, 2014 at 9:14 am)Chas Wrote: The concept of 'one-way' speed of light fails utterly since regardless of what direction is chosen for a two-way measurement, the result is always the same.
Only because under this convention light moves 1/2c when traveling directly away from the observer.

(January 6, 2014 at 1:49 pm)downbeatplumb Wrote: "I'm light, I'm gonna go quite fast in this direction but on the way back it will take no time at all, just coz."

That’s relativity for you.

Quote: This one way speed of light idea is just a desperate trick to try and shoehorn in a young universe against all the evidence.

How is it a trick? This sounds like whining.

Quote: It is nothing but creationists looking at the evidence and saying "ah but what if (insert bullshit here)" which is what they do to everything.

That’s funny, it was not first postulated by creationists.

Quote: No evidence is ever presented, just an attempt to shit on the facts to justify their mad position which they will always maintain no mater [sic] what the facts are.

What sort of evidence would you expect to support a convention?

Quote: They are a lost cause and not really worth bothering with.

Then why are you bothering?

(January 6, 2014 at 3:17 pm)orogenicman Wrote: Moreover, even if we ignore the physics and concede an instantaneous one-way speed of light, you'd still have the issue of the two-way speed giving you no less than half the distance that is actually calculated, which still gives you a universe that is 6.85 billion years old, far older than warped one's biblical claims. Of course, we aren't supposed to notice that little problem with his claim.

Your problem is not that you refuse to “ignore the physics”, rather your problem is that you are ignorant of the physics. I have provided you source after source clearly stating that this convention is completely compatible with what we know about light and how it behaves. As for the nonsense about distance calculation, this does not change the cosmic distances at all, it merely demonstrates that distant starlight cannot be used to argue for an old universe. You’ll have to find something else.

Quote: For instance, we know that it takes about 2 seconds for laser light from the Earth to bounce off of reflectors on the Moon and travel back to its source, which gives us the distance of the Moon from the Earth with very high precision. If this measurement was wrong, we'd have no chance of sending probes there because our calculations would always send them to the wrong location.

Again, you’re just missing the point. Under an anisotropic synchrony convention we can still calculate the distance from the Earth to the Moon because it would still take light roughly 2 seconds to travel there and back again. I have no idea what you think you are arguing against, but it is nothing close to what I am arguing for.
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RE: The universe appears "old", but it is still less than 10,000 years old
(January 15, 2014 at 7:36 pm)Statler Waldorf Wrote:
(January 6, 2014 at 12:25 am)orogenicman Wrote: Are you suggesting that the speed of light is not natural?

The one-way speed of light in any given direction is stipulated by man as long as the round trip speed remains the experimentally verifiable value, this is a core principle of special relativity.

“That light requires the same time to traverse the path A → M as for the path B → M is in reality neither a supposition nor a hypothesis about the physical nature of light, but a stipulation which I can make of my own freewill in order to arrive at a definition of simultaneity.” -Einstein 1961, p. 23 [emphasis is in the original]



Quote: You're the one who considers the one-way speed of light to be instantaneous (and thus magically affects the age of the universe) sans any supporting evidence whatsoever. Congratulations.

Yes, using this convention it moves at an infinite speed towards the observer, meaning we witness cosmic events in real-time. Imagine that.

So your basic premise is that the speed of light is entirely dependent on an observer?

What is the speed of light without an observer?

N.B. You are utterly misinterpreting special relativity.
Skepticism is not a position; it is an approach to claims.
Science is not a subject, but a method.
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RE: The universe appears "old", but it is still less than 10,000 years old
Why would light travel instantly in one direction and at light speed in the other?

Answer: to give creationists a last desperate attempt to explain reality that doesn't sound stupid. even though it is stupid).


Why isn't the speed of light instantaneous.

Quote:Were there an infinite value for the speed of light, light itself would not exist at all. Mathematically, the wave equation that describes light as an electromagnetic wave would lose its time-dependence.

Quote: if you think light is a wave, then it has to be something that propagates and takes time to go from one point to another. In other words, it has to travel at a finite speed. Infinite speed of propagation is an instantaneous magical change in things everywhere all at once, and not a wave at all!

http://www.scientificamerican.com/articl...eed-of-lig



You can fix ignorance, you can't fix stupid.

Tinkety Tonk and down with the Nazis.




 








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RE: The universe appears "old", but it is still less than 10,000 years old
After spending some time researching why on 'earth' are the 'young earthers' insisting on this minuscule timeframe like 10,000 years, I reached an epiphany; they want to easily dispose of evolutionary models for the origin-of-life which would require eons of time. of course they have to argue that the law of physic have changed, but they being biblically based should know God has stated those laws are fixed throughout the U's existence.
Atheist Credo: A universe by chance that also just happened to admit the observer by chance.
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RE: The universe appears "old", but it is still less than 10,000 years old
I smell a heavy dose of cherry picking, and a slight whiff of 'science' to prove a pre-determined conclusion, which isn't actually science at all. I'm sure Lawrence Krauss would have a right bloody riot with this one. Notice again that scientific theories establish clearly what would disprove the said theories, whereas you won't ever catch young-earth cranks conceding anything that could ever qualify as disproof. Also notice again, if there was really a convincing argument for variable light speeds but one that demonstrated clearly a 6-10 k universe age then we'd have ourselves a nobel prize winner by now. Waldorf is pretty good though, he's managed to re-work the entire realm of physics AND critical thinking from his keyboard. He's god deductive proof of god AND he knows the exact age of the universe........ using absolutely no mathematics whatsoever, bloody genius! Ultimate heroic armchair win.
(June 19, 2013 at 3:23 am)Muslim Scholar Wrote: Most Gays have a typical behavior of rejecting religions, because religions consider them as sinners (In Islam they deserve to be killed)
(June 19, 2013 at 3:23 am)Muslim Scholar Wrote: I think you are too idiot to know the meaning of idiot for example you have a law to prevent boys under 16 from driving do you think that all boys under 16 are careless and cannot drive properly
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RE: The universe appears "old", but it is still less than 10,000 years old
(January 21, 2014 at 2:55 am)snowtracks Wrote: After spending some time researching why on 'earth' are the 'young earthers' insisting on this minuscule timeframe like 10,000 years, I reached an epiphany; they want to easily dispose of evolutionary models for the origin-of-life which would require eons of time. of course they have to argue that the law of physic have changed, but they being biblically based should know God has stated those laws are fixed throughout the U's existence.

I agree with you as to the YEC's motives and add merely that this 'single-bullet', checkmate approach is misguided in a textbook cart before the horse sense. Evolutionary models for the diversity - not the origin - of life as we see it today do not require aeons of time so much as happen to have taken them to reach the current state. Species evolve over generations; those that take several years to reach reproductive maturity are necessarily going to have longer periods between generations than those reproducing over a shorter timescale, thus evolutionary effects are going to take much longer to become apparent. That's why biologists use fruit flies and bacteria in their experiments rather than humans with their inconveniently long maturation period.
At the age of five, Skagra decided emphatically that God did not exist.  This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair.  Only Skagra responded to it by thinking, 'Wait a second.  That means there's a situation vacant.'
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RE: The universe appears "old", but it is still less than 10,000 years old
https://www.youtube.com/watch?v=iPZ_cRv9P8Y
'The difference between a Miracle and a Fact is exactly the difference between a mermaid and seal. It could not be expressed better.'
-- Samuel "Mark Twain" Clemens

"I think that in the discussion of natural problems we ought to begin not with the scriptures, but with experiments, demonstrations, and observations".

- Galileo Galilei (1564-1642)

"In short, Meyer has shown that his first disastrous book was not a fluke: he is capable of going into any field in which he has no training or research experience and botching it just as badly as he did molecular biology. As I've written before, if you are a complete amateur and don't understand a subject, don't demonstrate the Dunning-Kruger effect by writing a book about it and proving your ignorance to everyone else! "

- Dr. Donald Prothero
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RE: The universe appears "old", but it is still less than 10,000 years old
(January 16, 2014 at 12:36 pm)Chas Wrote: So your basic premise is that the speed of light is entirely dependent on an observer?

It’s not my premise; it’s a stipulation of the convention. Under either convention it’s completely dependent upon the observer, in this one it’s the observer’s position in the isotropic convention it’s the observer’s velocity. Neither is more correct than the other.

Quote: What is the speed of light without an observer?

Where at and measured how?

Quote: N.B. You are utterly misinterpreting special relativity.

Even though I quoted from Einstein’s work that explicitly agrees with me? Nice try.
(January 16, 2014 at 1:49 pm)downbeatplumb Wrote: Why would light travel instantly in one direction and at light speed in the other?

It doesn’t, it travels at 1/2 experimental c in the opposite direction. All of relativity is counterintuitive.

Quote: Answer: to give creationists a last desperate attempt to explain reality that doesn't sound stupid. even though it is stupid).

Why would non-creationists develop something “intended to save creationism and to make creationists not sound stupid”? If you’re going to postulate such conspiracy theories I’d first make sure that they made one iota of sense.


Quote: Why isn't the speed of light instantaneous.

It is in one direction, the round-trip speed cannot be in order to preserve causality.

(January 21, 2014 at 2:55 am)snowtracks Wrote: After spending some time researching why on 'earth' are the 'young earthers' insisting on this minuscule timeframe like 10,000 years, I reached an epiphany; they want to easily dispose of evolutionary models for the origin-of-life which would require eons of time. of course they have to argue that the law of physic have changed, but they being biblically based should know God has stated those laws are fixed throughout the U's existence.

1. The creation timeline predates any such model, so that cannot be the reason.
2. Perhaps that’s the reason Darwinists desperately want the Universe to be that old…because they need it to be? Ever think of that?
3. You can have all the time you want, it’s not going to save your paradigm.

(January 21, 2014 at 2:16 pm)WesOlsen Wrote: I'm sure Lawrence Krauss would have a right bloody riot with this one. Notice again that scientific theories establish clearly what would disprove the said theories, whereas you won't ever catch young-earth cranks conceding anything that could ever qualify as disproof. Also notice again, if there was really a convincing argument for variable light speeds but one that demonstrated clearly a 6-10 k universe age then we'd have ourselves a nobel prize winner by now.

1. Variable light speeds do not prove the Universe is 6,000 years old; they merely demonstrate that distant starlight in no way proves it is older than 6,000 years.
2. What on Earth makes you think the Nobel committee does not have their personal biases? That’s laughable.


Quote: Waldorf is pretty good though, he's managed to re-work the entire realm of physics AND critical thinking from his keyboard.

No, I merely managed to comprehend it.



Quote: He's god deductive proof of god AND he knows the exact age of the universe........ using absolutely no mathematics whatsoever, bloody genius! Ultimate heroic armchair win.

I do not know the exact age, but I know a very narrow range.

(January 21, 2014 at 7:11 pm)Stimbo Wrote: I agree with you as to the YEC's motives and add merely that this 'single-bullet', checkmate approach is misguided in a textbook cart before the horse sense.

Pretending to know someone else’s motives is not misguided? I believe what I believe because I know the Bible is what it claims to be.

Quote: Evolutionary models for the diversity - not the origin - of life as we see it today do not require aeons of time so much as happen to have taken them to reach the current state. Species evolve over generations; those that take several years to reach reproductive maturity are necessarily going to have longer periods between generations than those reproducing over a shorter timescale, thus evolutionary effects are going to take much longer to become apparent. That's why biologists use fruit flies and bacteria in their experiments rather than humans with their inconveniently long maturation period.

Even though fruit flies are still flies and bacteria are still bacteria after tens of millions of generations. The evidence just does not fit what you are saying.

Quote: Astronomy kitchen video

That’s measuring the round-trip speed of light which nobody here is disputing. I cannot believe I wasted seven minutes watching that. Tongue
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