U 238 dating rocks
It occurs naturally as U-238 with a very small amount of U-235, when U-235 is refined out it is called depleted… Yes, it is used but the rest of the above answer is entirely wrong. Uranium's standard isotope (which is U-238) is composed of 92 Protons ( charges) and 146 Protons (- charges).
This tells you that a standard Uranium atom is negatively charged.
The two cascades are different—235U becomes 207Pb and 238U becomes 206Pb.
What makes this fact useful is that they occur at different rates, as expressed in their half-lives (the time it takes for half the atoms to decay).
A U 235 Regulator is something used to regulate the combustion of U 235 which is a grade of Uranium. Fissile means that and also that the event can release enough stray neutrons to…
That would take the zircons on a straight line back to zero on the concordia diagram.The 235U–207Pb cascade has a half-life of 704 million years and the 238U–206Pb cascade is considerably slower, with a half-life of 4.47 billion years.So when a mineral grain forms (specifically, when it first cools below its trapping temperature), it effectively sets the uranium-lead "clock" to zero.However the fuel used is about 95 percent U-238, simply because that is the result of enriching natural uranium to 5 percent…The U stands for Uranium which is a radioactive metal and the 238 stands for what number of isotope. It is very similar to U-235, which is used in nuclear reactors. Depleted Uranium, 0.2% U-235 99.8% U-238: Armor piercing antitank Gatling gun bullets and tank armor plate Highly Enriched Uranium, 93.5% U-235 6.5% U-238: Fission bomb cores Reactor Produced Uranium, 238 represents the atomic mass of Uranium.