Elementary fluctuations of fundamental particles such as electrons, photons or phonons offer the deepest insight into the nature of the phase state of the particle ensemble. This presentation focuses on the continuing development of an experimental technique that exploits the fundamental fluctuation spectrum of the electron ensemble in any electrically conductive material. The fluctuation spectrum, when measured in the hydrodynamic or low frequency regime through Dynamic Electron Scattering (DES), consists of two primary spectral sources: acoustic plasma oscillations and a random thermally diffuse component often referred to as Johnson/Nyquist noise. A great deal of transport property information is carried in the structure factor and correlation functions of the spectrum. The underlying physics behind DES will be explained followed by the transport properties accessible to the experimentalist through DES.