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RocksInMyHead

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Given that radioactive decay is a nuclear process, every atomic/nuclear property is related to it - mostly by determining the stability of an isotope. And as things are now, the decay constant for a stable element is zero - since the time it takes for a single atom of a stable element to decay would be infinity, and 1/infinity = 0. Likewise, the half-life would be infinity.

I must admit that there is no predictive model for radioactive decay, but it can be verified to work (at least for the last 150,000-200,000 years or so) by other methods such as tree rings, lake varves, and ice cores. The various radiometric dating methods also agree with each other, despite having different decay rates. And I can think of other fields - quantum mechanics for one - that are still used every day despite the lack of a functional predictive model.

Moreover, I see no reason to disbelieve a mountain of evidence for the reason that it lacks a predictive model when your countering theory lacks one as well, along with any solid evidence.
 
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RocksInMyHead

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Only one decay-related measurement is needed: the energy of the escaping alpha particles, which is uniform.
That's a good one; thinks for digging it up. What do each of the variables stand for?
 
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Assyrian

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Unfortunately Jesus had this habit of never giving people the replies they were looking for. And of course if you can work out what Algorithm Jesus is going to say you don't really need him to teach you, do you? You just need your algorithm.
 
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juvenissun

... and God saw that it was good.
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Unfortunately Jesus had this habit of never giving people the replies they were looking for. And of course if you can work out what Algorithm Jesus is going to say you don't really need him to teach you, do you? You just need your algorithm.

What we talked about is to back track on what Jesus might have said but is not recorded. He has taught us everything we need to know. We are just trying to guess (for some purposes? such as He mentioned the Global Flood to people in His preaching.)

OK, stop. This is it.
 
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juvenissun

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Only one decay-related measurement is needed: the energy of the escaping alpha particles, which is uniform.

First, if we still need to measure the energy of decay, then we may as well to measure the decay rate directly. Second, is the equation only used for alpha decay? Are there similar equations for other types of decay?

While I like to know what does each item in the equation mean, I also notice that it is an equation taken from a 300 level physics course. I thought my question should be way beyond 700 level. Am I wrong?
 
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Assyrian

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Sure. It is always worth taking creationists up on it when they attribute their own interpretations of Genesis to Jesus. Thanks for having a go at defending Tas.
 
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shernren

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First, if we still need to measure the energy of decay, then we may as well to measure the decay rate directly. Second, is the equation only used for alpha decay? Are there similar equations for other types of decay?

There is a profound difference. Suppose I observe a uranium atom and it takes three days to decay. Do I know anything about the half-life of uranium? No, I only know how long it took this particular atom to decay, which doesn't tell me much about how long uranium atoms in general take to decay.

But then I measure the energy of the alpha particle emitted; using the Geiger-Nuttall law, I immediately know the decay rate of the atom. Furthermore, the energy of the alpha particle has very measurable consequences. For example, it is exactly related (by E = mc^2) to the mass difference between the initial nucleus and the final nucleus + alpha particle, which means that for the energy to change the masses of atoms would have to change, which would mean all kinds of things such as stars not having enough mass to come together and burn or to explode and all that.

While I like to know what does each item in the equation mean, I also notice that it is an equation taken from a 300 level physics course. I thought my question should be way beyond 700 level. Am I wrong?

Alpha decay can be very successfully modelled as an alpha particle tunneling through a square potential barrier, because no nucleon transformations occur (every proton remains a proton and every neutron, a neutron). Tunneling equations are standard fare for a second quantum mechanics course, and indeed the successful application of tunneling was one of the historical high points of early QM. That's why it's only 300 level. (And I have no idea what that means ... )

Beta decay is tougher because it involves a transmutation: from one quark flavor to another accompanied by the creation of a lepton-antilepton pair. Calculating the probabilities of that occurring requires a mathematical formulation of the weak force, which is tough - but hardly impossible.

Gamma decay is conceptually simpler because it represents a transition between two states of the nucleus, but practically a lot more difficult because there's no way to predict exactly what the energy levels of the nucleus are.

That's a good one; thinks for digging it up. What do each of the variables stand for?

Gamow theory of alpha decay
 
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juvenissun

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Thanks for the details.

So, let me change the question: Do we know WHY are there different types of radioactive decaying? Can we examine an atom and predict which type of decay would it make?
 
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Amen Brotha, sorry for the giant repost everyone, but this needs an amen.
 
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jackmt

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If you do not use radiometric dating as an argument, then it is very easy to show that the earth is young.

Radio carbon dating only "works" if you don't know beforehand how old the object is. Stories abound, and I have seen some on broadcast news, about the live tissue that was RC dated at thousands of years old, about the single artifact that had 3 different parts tested with several hundred milennia discrepancies, of things known to be a hundred or so years old but RC dated at many millenia. If you know how old the thing is, radio carbon dating doesn't work. If you don't know, keep testing till you get the result you want. Then you will have proof.

It sounds like you know the theory very well. But as my favorite philosopher said, "In theory, there's no difference between theory and practice. In practice, there is." Yogi Berra
 
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mathetes123

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1) Petrified trees in several layer of sedimentary stone in the grand canyon indicating rapid deposit of sediments from the flood.

2) The salt content of the oceans.
 
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philadiddle

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1) Petrified trees in several layer of sedimentary stone in the grand canyon indicating rapid deposit of sediments from the flood.
How do they do that? It couldn't have been a local flood? Or trees in marshes being covered in a few hundred years by small seasonal flooding? Or other natural disasters?

2) The salt content of the oceans.
This is vague, can you be more specific?
 
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philadiddle

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Note that in the post you were responding to he was indirectly admitting that radiometric dating gives the earth an older age, so he needs to ignore it.

Can you give an example of something dated with the wrong age?

Can you give an example of something that was tested over and over again till they got the results they wanted?
 
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philadiddle

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I personally don't see how it's so impossible for God to create the universe and everything in it in just 6 days.
I don't think anyone thinks that it's impossible. It's also possible he made it a week ago, or 1 million years ago, or 6 trillion years ago. The question is, did He? How can we tell?
 
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DCJazz

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I don't think anyone thinks that it's impossible. It's also possible he made it a week ago, or 1 million years ago, or 6 trillion years ago. The question is, did He? How can we tell?

You missed the point. Where do we find that it says he created it all in 6 days, and on the 7th rested?
The bible, right? So what is it about the creation account that is so difficult to accept?
 
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philadiddle

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You missed the point. Where do we find that it says he created it all in 6 days, and on the 7th rested?
The bible, right? So what is it about the creation account that is so difficult to accept?
Everything about God's creation seems to say otherwise. It appears that theologians throughout the centuries who see the creation account as symbolic have the correct interpretation, whereas the fairly new YEC interpretation isn't grounded in reality.

Why would God lie through His creation? Is He trying to trick us for some reason?
 
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juvenissun

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There is nothing called "wrong age". It is just a timing mark and is subjected to interpretation.

A serious dating work usually take tens of dates. How to interpret those dates would depend on the purpose of study.

Again, geochronologists DO NOT take the dates as the "real" true age. It is not their goal to do that. The so-called "true age" is only a term which refers to the most logical dates.
 
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juvenissun

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I wish I know the theory. The problem is that I don't.
I only know how to use the fact in practice, a low level practice.
 
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