U-235, when bombarded by neutrons, fissions or splits into two smaller nuclei and releases energy and starts nuclear chain reaction.
Because of the energy released, U-235 is efficient for power generation and the only isotope of uranium that can sustain these reactions.
Uranium isotopes dating
They point to a catastrophic origin for granites, consistent with the biblical timeframe for earth history and God’s judgment during the Flood.
Wiens has a Ph D in Physics, with a minor in Geology.
His Ph D thesis was on isotope ratios in meteorites, including surface exposure dating.
He was employed at Caltech's Division of Geological & Planetary Sciences at the time of writing the first edition.
Because uranium is radioactive, it is constantly emitting particles and changing into other elements.
Uranium has a well-established radioactive decay series.Uranium and other radionuclides are used by nuclear medicine (MRIs, X-rays, radioisotope injections, radiation treatment, etc.), scientific research (age-dating materials, compositional information, metabolic studies, etc.), agriculture (irradiating food and seeds), consumer products (smoke detectors, watches, irradiating bandages and other items to sterilize them, computer components, etc), materials testing for numerous industries (automotive, aircraft, construction, mining and oil) and space exploration (fuels).In addition, depleted uranium (DU) has been used for counterweights in sail boat's keel, ballast in boats, pigments and radiation shielding.U-238 and U-235 (which has 143 neutrons) are the most common isotopes of uranium.Uranium naturally contains all three isotopes (U-238, U-235 and U-234), and it rarely varies more than 0.01% from the average composition shown in the table below without our intervention.There are over forty such techniques, each using a different radioactive element or a different way of measuring them.