Field Equations in Dosimetry

mental properties of this field or relate properties of several fields. These equations, usually termed field equations, may be based on fundamental physical laws, as in the case of Poisson's equation, or, as in the case of the theory of elasticity, they may interrelate physical quantities through material constants. In either case field equations can, because of their generality, be powerful tools for the solution of many physical problems. Many of the quantities employed in radiological physics are field quantities; in fact, it is customary to speak of the constants of the radiation field. It would, there