Extremely accurate usually up to 50,000 years, when we switch to other dating methods, although it can be exteneded to around 100,000 with some special techniques. The accuracy depends on how old the sample you're looking at is, the quality of the sample, and the quality of the equipment used to analyze. But in any event, the date is usually accurate to well within 1%. The fact that we can use C-14 for archaeology (in fact, its main use) testifies to this.
If carbon dating is accurate how come the first experiment on how old is this earth is different from the second and on the thirds or so on?
C-14 testing has never been used to measure the age of the earth, nor would it ever be.
Or could this be as phony as the evolution theory THAT IS CONFUSING THE CHILDREN IN SCHOOL?
You clearly haven't had much of a scientific education. So who are you to expound on subjects you don't understand?
I will admit that I am dumb about the carbon dating and that's why I am asking questions.
I have a friend who can challenge you and your sources. He is offering $10,000. He is looking for someone who can provide scientific evidence, that is objective, valid, reliable, and calibrated.
Care to look and read at his challenge? Please visit http://www.csulb.edu/~jmastrop/prize.html.
Then let me know.