Carl Hempel stated that prediction and explanation have the same structure

Carl Hempel stated that prediction and explanation have the same structure logically and explanation can forecast a valid explanation which can be used to justify scientific explanations in deductive and nomological modeled accounts. He faced inductive explanation in the statistical laws in which he gave a high probability which was not consequences of logical premises which is a law cover. The laws are determiners of statistical laws and which are administrable. To confirm the paradoxes of confirmation in his research Hempel used the statement (x) in which (Rx-Bx) was supported by the statement (Ra&Ba) and said if P1 and P2 are logically equivalent statements then O1 confirms P1 and O2 supports P2. Hempel uses the measurement of mass to describe physical quantities that are defined by concluding that when two bodies have the same and that different bodies haze different masses and if balanced their masses remain constant and if one has a greater mass than the other5 then they cannot reach to an equilibrium that’s why the difference in the weight of bodies results from.