Hows about I just ignore you? :up:
Real Science Radio's 2013 List of Not So Old Things Pt 3
- Thread starter Jefferson
- Start date
Hows about I just ignore you? :up:
:darwinsm:
The ultimate evolutionist dogma. Do not question anything because someone said it was so.
Frayed Knot
New member
And his major point - we only accept heliocentricity and evolution because those authorities told us to.
It's like they're so steeped in how their religion works, that they think science works the same way.
Hard to decide:
1. great atheistic scientific conspiracy
2. funding sources continue the "lie" of climate change
3. same facts but just different interpretation (but see my comment re Copernicus, et al.)
4. fear
5. the only evidence is the book cobbled together mostly from non-eyewitnesses, and translated rather than the evidence that their deity left.
Lordkalvan
New member
Why not, Professor? You pretty much ignore every reasoned argument raised against your various claims, assertions, misunderstandings and misrepresentations, after all.
Lordkalvan
New member
How unlike the home life of our own dear Professor.
Radioactive material steadily transmutes into different elements due to alpha and beta decay. This happens because the atom contains an unstable configuration of protons and neutrons. Each time a radioactive element releases a particle, it reduces the number of protons and neutrons it contains.
Each isotope is assigned a number which is the sum of its protons and neutrons. For example, uranium-238 has the expected 92 protons for uranium, but it also contains an additional 146 neutrons. With that configuration, the isotope is unsteady and therefore ejects energy and an alpha particle. Each time this happens, it literally becomes a different element or isotope. When uranium-238 breaks down, it slowly becomes lead. Uranium-234 becomes thorium. Potassium-40 becomes argon.
There are many types of radioactive decay, but they all share a feature known as a "half-life." Essentially, every radioactive isotope has its own decay rate which results in the number of atoms of a particular isotope in a sample decreasing by half within a specific and steady amount of time. For example, polonium-218 has a half-life of 3.04 minutes. Carbon-14 has a half-life of 5,730 years. Potassium-40 has a half-life of 1.25 billion years. For every half-life, half of what had been there before will remain. When comparing the remaining isotope to the amount of daughter elements in a sample, we now have a reliable clock by which to determine an age.
One misconception about radiocarbon dating is that at some point, there should be no carbon-14 left. It would make sense to believe this because as the amounts continue to halve there should eventually be a time when there is one atom left and then one half-life later it should be gone.
The reality is that there is constant radiation bombarding the planet and this bombardment also affects isotopes at the atomic level. For example, when carbon-12 or -13 is struck by an alpha particle, it absorbs the particle and becomes a higher isotope. The result is an ambient amount of carbon-14 even in finds millions of years old.
Carbon-14 is likewise formed from background radiation, such as radioactivity in the surrounding rocks.
Each isotope is assigned a number which is the sum of its protons and neutrons. For example, uranium-238 has the expected 92 protons for uranium, but it also contains an additional 146 neutrons. With that configuration, the isotope is unsteady and therefore ejects energy and an alpha particle. Each time this happens, it literally becomes a different element or isotope. When uranium-238 breaks down, it slowly becomes lead. Uranium-234 becomes thorium. Potassium-40 becomes argon.
There are many types of radioactive decay, but they all share a feature known as a "half-life." Essentially, every radioactive isotope has its own decay rate which results in the number of atoms of a particular isotope in a sample decreasing by half within a specific and steady amount of time. For example, polonium-218 has a half-life of 3.04 minutes. Carbon-14 has a half-life of 5,730 years. Potassium-40 has a half-life of 1.25 billion years. For every half-life, half of what had been there before will remain. When comparing the remaining isotope to the amount of daughter elements in a sample, we now have a reliable clock by which to determine an age.
One misconception about radiocarbon dating is that at some point, there should be no carbon-14 left. It would make sense to believe this because as the amounts continue to halve there should eventually be a time when there is one atom left and then one half-life later it should be gone.
The reality is that there is constant radiation bombarding the planet and this bombardment also affects isotopes at the atomic level. For example, when carbon-12 or -13 is struck by an alpha particle, it absorbs the particle and becomes a higher isotope. The result is an ambient amount of carbon-14 even in finds millions of years old.
Carbon-14 is likewise formed from background radiation, such as radioactivity in the surrounding rocks.
Sources:
| . | |
http://www.talkorigins.org/indexcc/CD/CD011_6.html
6days
New member
username said:
Nope... we have a reliable clock of how fast the parent element decays. It can't tell you the age of anything. How much daughter element existed when God created? Did daughter element ever leech in, or out of the sample? (And other factors we don't know about the past)
This isn't true either. The half life is just a mathematical construct that is useful when talking about decay rates.
If we isolate a single C14 atom and watch it decays, there will indeed be none left.
How far back can radiocarbon dating accurately measure?
The reality is that there is constant radiation bombarding the planet and this bombardment also affects isotopes at the atomic level. For example, when carbon-12 or -13 is struck by an alpha particle, it absorbs the particle and becomes a higher isotope. The result is an ambient amount of carbon-14 even in finds millions of years old.
Carbon-14 is likewise formed from background radiation, such as radioactivity in the surrounding rocks.
Carbon-14 is likewise formed from background radiation, such as radioactivity in the surrounding rocks.
Neither of these responses have anything to do with what we said. :idunno:
How far back can radiocarbon dating accurately measure?
It's why certain kinds of rocks are not good candidates for testing. Would you like to learn how we know which ones are?
Isochrons do this quite nicely.
As far as the "original", it's often quite simple. For example, K-Ar testing starts with 100% potassium, and no argon. (it's a gas, and when the rock melts, the gas leaves the lava, resetting the counter).
Do the simulation here, to figure out how we know the ages by K-Ar.
http://www.sciencecourseware.org/virtualdating/files/3.0_GenericCurve.html
Carbon 14 is rarely done for fossils, since the half-life is so short that it just goes to the default maximum age possible with the method. If this puzzles you:
What temperature will molten lead be with this instrument?
If you can figure out the problem here, you can figure out why Carbon-14 doesn't work in paleontology.
6days
New member
Already answered.
6days
New member
Someone who thinks "six days" means 14+ billion years is not a good candidate to learn from.
Cool! What was the answer? Can you post a link?
6days
New member
See post 91
I see that 6days is not about to answer my question. Anyone else want to try? What is the highest temp you will get on the thermometer I posted?
I'll take a wild guess and say that it will max out at 120°?