In the fusion of deuterium and tritium nuclei to producea thermonuclear reaction, where

Branches of Science Science describes an area of knowledge, typically about something in the physical world, that can be explained in terms of scientific observation or the scientific method. The scientific method is a discovery process that has evolved over several hundred years and can be summarized as follows:  A phenomenon in the physical world is observed  An explanation, or hypothesis, for the phenomenon is formed  the hypothesis is tested by means of objective, reproducible experiments If the results of the experiments support the hypothesis, it becomes accepted as scientific theory. Later, if new information is found to contradict the hypothesis, it may be revised or abandoned in favor of a new hypothesis, which is then subjected to additional experiments. The sciences that describe the physical universe are categorized in different ways. The largest distinction in science is whether a science is pure, or theoretical, or whether it is applied, or practical. Pure science explains a phenomenon, while applied science determines how a particular phenomenon may be put to use. In general, pure science is divided into the following categories:  Physical sciences, which deal with matter and energy and allow us to describe the material universe in terms of weight, mass, volume, and other standard, objective measures.  Earth sciences, which explain the phenomena of Earth, its atmosphere, and the solar system to which it belongs.  Life sciences, whi