I suspect that some of my regular readers have noticed that I have not been blogging for a while. The reason why I have stopped blogging for a while is that I am in the process of writing a book. I saw something on UK TV today which is an outrage, it is the idea that the earth is only about 6000 years old.
Now while freedom of thought and speech allows people to hold and express what ever ideas they have, even the outlandish and odd ones ! But the idea that the earth is only 6000 years old is deeply disturbing and clearly wrong !
I heard one of the young earth creationists being told by a geoscientist about radioactive dating of rocks and minerals. The creationist said something to the effect of “how do you know when the clock was zeroed”. I know that in Africa many years ago a natural nuclear reactor operated. Some of the fission products such as Tc-99 have decayed away. This suggests that far more than 6000 years has passed since the reactors were in operation.
I will leave it up to my readers to look up the half life for Tc-99 and work out how long it will take for 90 % of the Tc-99 to decay to Ru-99. Think of it as homework.