Radioactive decay can be observed in the laboratory by either of two means: (1) a radiation counter (parent atoms.
The particles given off during the decay process are part of a profound fundamental change in the nucleus.
Given below is the simple mathematical relationship that allows the time elapsed to be calculated from the measured parent/daughter ratio.
The age calculated is only as good as the existing knowledge of the decay rate and is valid only if this rate is constant over the time that elapsed.
The situation is analogous to the death rate among human populations insured by an insurance company.
Even though it is impossible to predict when a given policyholder will die, the company can count on paying off a certain number of beneficiaries every month.
For a single element, these atoms are called isotopes.
Sediments, which is an important component of marine environment can serve as sorbent or concentrator for these pollutants.In this study, estimation of sedimentation rate using Po dating was carried out to study the depth profile of accumulated OCPs in sediments of Thane Creek Mumbai, India.The creek is a triangular mass of brackish water receiving huge municipal and industrial sewage inputs.In short, the process of radioactive decay is immutable under all known conditions.Although it is impossible to predict when a particular atom will change, given a sufficient number of atoms, the rate of their decay is found to be constant.The total HCH concentration in the surface sediment samples was in the range of 5.6–13.3 ng/g while total DDT concentration in the surface sediment samples was in the range of 3.2–5.5 ng/g.