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Dale

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Both OSL and TLD testing release the trapped electrons which gives off radiation. That’s what they are measuring. Here’s a video explaining how OSL works. Skip to 9 minutes into the video to avoid her whole biography. That’s where she explains how OSL works.



You seem to be confused about what "trapped electron" means. It can mean different things in different contexts. When you're talking about solar flares, we are talking about protons and electrons expelled from the sun, which get trapped in the earth's magnetic field. Have you heard of the Van Allen radiation belt? The Van Allen belt was officially discovered in 1958; theorists had predicted it before then. Protons and electrons travel around the earth, guided by lines of the earth's magnetic field.

It is my understanding that Optically Stimulated Luminescence, OSL, works especially well with quarts crystals, although it also works with silicon dioxide crystals and other things. When sunlight strikes a quartz crystal, some of the outer electrons absorb a photon of light and go to a higher level, an excited state. These usually give off a photon and return to a normal state sometime soon. In a quartz crystal, anomalies in the crystal sometimes trap an electron in the excited state and it remains at a higher quantum level for long periods, even thousands of years.

There is no way that an electron "trapped" by the earth's magnetic field, whizzing around the earth in the Van Allen belt, can get into a quartz crystal buried underground in the Arabian desert. Think about it.
 
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Job 33:6

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Both OSL and TLD testing release the trapped electrons which gives off radiation. That’s what they are measuring. Here’s a video explaining how OSL works. Skip to 9 minutes into the video to avoid her whole biography. That’s where she explains how OSL works.


I appreciate this video.

I think that it's also worth noting that in the video this speaker has a diagram noting cosmic ray attenuation with depth at 10 minutes in.

I think that in order to make a case that any form of cosmic rays could somehow change a result in any significant way, you would need evidence of some sort of an anomaly if you were suggesting that the cosmic rays increased in quantity due to a solar flare impacting Earth's soil.

I could say that someone else's science doesn't make sense because an elephant trampled over their equipment, but without evidence for the occurrence of an elephant trampling equipment, it's kind of just imaginative.

And when paired with radiometric dates that also gave an age of 7000-8000 years, the solar flare/elephant trampling equipment response makes even less sense.
 
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BNR32FAN

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I think that in order to make a case that any form of cosmic rays could somehow change a result in any significant way, you would need evidence of some sort of an anomaly if you were suggesting that the cosmic rays increased in quantity due to a solar flare impacting Earth's soil.

You mean like the Carrington Event? Many scientists believe an event like this could occur on average about once every 150 years.

Carrington Event - Wikipedia
 
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Job 33:6

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You mean like the Carrington Event? Many scientists believe an event like this could occur on average about once every 150 years.

Carrington Event - Wikipedia

Sure, so now you have to show that, reflected in stratigraphy. So for example, if you have a succession of deposits say, 1000 years long, if an ever occurred roughly every 150 years, we might expect to see spikes in data every 150 years.

If you think that's what it does.
 
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Dale

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Here’s another example of what we can learn from Optically Stimulated Luminescence, OSL.


These 120,000-year-old footprints offer early evidence for humans in Arabia
By Ann Gibbons Sep. 17, 2020 , 5:05 PM


“Using a method called optically stimulated luminescence, which measures electrons to infer when layers of sediment were last exposed to light, the team dated the sediments above and below the footprints to 121,000 and 112,000 years.”

“ Almost 400 tracks were left by animals, including a wild ass, a giant buffalo, elephants, and camels. Only seven were confidently identified as human footprints.”


Link
AAAS
 
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Dale

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You mean like the Carrington Event? Many scientists believe an event like this could occur on average about once every 150 years.

Carrington Event - Wikipedia


The Carrington Event is completely irrelevant to this thread and to scientific dating methods.

A hundred Carrington Events a year would have no effect on dating based on radioactive isotopes or on those from Optically Stimulated Luminesence.
 
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chad kincham

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It being a ".edu" website means basically nothing when one considers that what you are linking to is a personal page of one of the staff members, not anything published or sanctoned by the university. It means as much as if the person who wrote it put it up on blogspot.

Now, you might say that it's still a staff member of a college that put it up, which could count for something in terms of expertise. But the the person in question is a professor of computer science (as demonstrated by the fact that the URL is from the computer science department), which is unrelated to radiometric dating.
Except he cites sources, it’s not his opinion, per this example:

“The following quote from The Earth: An Introduction to Physical Geology by Tarbuck & Lutgens, pp. 55-57, (1987), gives us an idea of the tremendous complexity of the processes that occur when magma solidifies.”

He’s going through the science in great depth. It’s not a 5 minute read, and it gets technical.
 
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