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I see articles like this one every once in a while. A chemistry professor once told my class that due to the rate of diffusion, that we had just learned, the t
by rebelde 10y ago
I see articles like this one every once in a while.
A chemistry professor once told my class that due to the rate of diffusion, that we had just learned, the test of the "old air" would be wrong.
I don't know chemistry well. My question is if the salt completely stopped all diffusion over the last billion years. Maybe somebody here can answer.
- deleted 10y ago[deleted]
- bduerst 10y agoIf I remember correctly, NaCl atoms are packed pretty closely together in crystallized form. They seem to be only looking at large crystalline structures, which do not have evidence of disruption. Of course, they also said they used the same method with modern salt, and the O2 levels were lower than atmosphere by 9.2% for one of those samples. It seems fairly legit but it would be great if they could test salt from the same period but from a different mine.