Helium isotope dating
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For more examples, see my article: Yet it's a vacuum there. The thing is that of course it was a sunny day for the astronauts - you tend to forget when you see the black sky. On Earth some of the light comes to the landscape from the sun and some reaches us indirectly from the blue sky and the clouds. On the Moon, much of the light comes from the sun, but a lot of light also comes indirectly from the landscape itself. That's why you can see detail in the shadows, and why they aren't completely black on the Moon.
Isotope geochemistry - Wikipedia
Is the ancient dream of alchemy--lead into gold--possible? The supposedly dense, waxy, red material was said to enable the process that has become synonymous with alchemy—chrysopoeia, the metamorphosis, or transmutation, of base metals such as lead into gold. Alchemists have often been dismissed as pseudoscientific charlatans but in many ways they paved the way for modern chemistry and medicine. The alchemists of the 16th and 17th centuries developed new experimental techniques, medicines and other chemical concoctions, such as pigments. The problem, Principe says, is that the alchemists did not yet know that lead and gold were different atomic elements—the periodic table was still hundreds of years away. Believing them to be hybrid compounds, and therefore amenable to chemical change in laboratory reactions, the alchemists pursued the dream of chrysopoeia to no avail.
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Isotopes of helium
Reference to a case where the given method did not work This is perhaps the most common objection of all. Creationists point to instances where a given method produced a result that is clearly wrong, and then argue that therefore all such dates may be ignored. Such an argument fails on two counts: First, an instance where a method fails to work does not imply that it does not ever work. The question is not whether there are "undatable" objects, but rather whether or not all objects cannot be dated by a given method.
The Radiometric Dating Game Radiometric dating methods estimate the age of rocks using calculations based on the decay rates of radioactive elements such as uranium, strontium, and potassium. On the surface, radiometric dating methods appear to give powerful support to the statement that life has existed on the earth for hundreds of millions, even billions, of years. We are told that these methods are accurate to a few percent, and that there are many different methods. We are told that of all the radiometric dates that are measured, only a few percent are anomalous. This gives us the impression that all but a small percentage of the dates computed by radiometric methods agree with the assumed ages of the rocks in which they are found, and that all of these various methods almost always give ages that agree with each other to within a few percentage points.