Radiographic testing rt, Or industrial radiography serves as a nondestructive testing ndt method of inspecting materials for hidden flaws with the implementation of the ability of short wavelength electromagnetic radiation high energy photons to penetrate various materials. Either an x, Ray machine or a radioactive source, Serves the purpose of a x, Ray computed tomography machine as an origin of photons. Neutron radiographic testing nr is a variant of radiographic testing which uses neutrons instead of photons to penetrate materials. This can see very different things from x, Rays, Because neutrons can pass with ease through lead and steel but are stopped water and, By plastics oils. Most industries are moving from film based radiography to a digital sensor based radiography much the same way that traditional photography has made this move. Radiographic testing rt