This page presents a comprehensive list of fundamental physical constants, electrical conductivities of materials, and their relative dielectric and permeability values. It includes key constants like...This page presents a comprehensive list of fundamental physical constants, electrical conductivities of materials, and their relative dielectric and permeability values. It includes key constants like the speed of light, electron charge and mass, Planck's constant, and the universal gas constant. The conductivities range from metals like silver and copper to insulators like glass.