It is important to define and relate nomenclature used in the literature with particular emphasis on metallic systems most often used in the study of the FOs phenomenon. A complete derivation of all aspects of Friedel Oscillations (FOs) is quite complex; therefore, we present only the most significant points. For a more detailed exploration, we recommend referring to the book by Monceau as well as as well many others. Charge carriers are particles within a material that carry an electric charge, facilitating the flow of electric current. In solid-state physics, the most common charge carriers are electrons and holes. In many metals, the charge carriers are conductance electrons. An electron gas is a model that treats electrons in a conductor as a collection of non-interacting, free-moving particles that obey Fermi-Dirac statistics. In contrast, an electron liquid considers the significant interactions between electrons, resulting in correlated movements and collective behaviors. The key difference between the two is that the electron gas model neglects electron-electron interactions, while the electron liquid model includes these interactions, leading to more complex and realistic descriptions of electron behavior. Electron mobility refers to the ability of electrons to move through a material when subjected to an electric field. It measures how quickly electrons can drift in response to an applied electric field. Higher electron mobility means electrons can move freely and conduct electricity more effectively within the material. Electron delocalization range (EDR) function , on the other hand, describes the extent to which electrons are spread out or localized within a material. It indicates how far an electron can move before its wave function overlaps significantly with another electron, leading to interactions such as scattering or localization. In simpler terms, EDR describes the range over which an electron can move relatively freely before being confined or influenced by its surroundings. Unlike electron mobility, which focuses on the speed of electron movement, EDR considers the spatial distribution of electron wave functions within the material.