Gases are assumed to be at atmospheric pressure; the temperature, including the values of ε indicated. List of dielectric constants Substance Substanz Dielectric Constant Rapeseed grist Raps-Schrot 2,1 Resin Harz 1,5 Rice Reis 3,0 Rock salt (0-25 mm) Steinsalz (0-25 mm) 4,3 Rye Roggen 6,0 Rye bran Roggenkleie 2,2 Saccharose solution Saccharoselösung 20,0 Salt water Salzwasser 32,0 Occasionally other equations are in-B and C have an estimated accuracy indicated by dicated in footnotes. All other factors being equal, greater permittivity of the dielectric gives greater capacitance; less permittivity of the dielectric gives less capacitance. Dielectrical Constants of Polymers; Compound: ε (Exper. ; Solubilities are in water and are reported as grams solvent/100 grams water. The chart is intended to provide a comparison of how the GPR velocity of a material can range between sources. Values presented here are relative dielectric constants (relative permittivities). Dielectric constant is defined as the insulating material that can store charge when it is placed between two metallic plates. The relative permittivity, or dielectric constant, of a material is its (absolute) permittivity expressed as a ratio relative to the vacuum permittivity.. Permittivity is a material property that affects the Coulomb force between two point charges in the material. These values are for informat ional purposes only. of Dielectric Constant where •,, 1, and a (or a if the value is followed immediately by a in parentheses) are specified in Values of dielectric constant recorded in sections the table. ): ε (Calc. Learn about formula, units, and factors affecting dielectric constant here. The table of GPR velocities, dielectric constants, and conductivity values is a culmination of resources comparing values reported by government agencies and sources easily accessed by the public. Dielectric constant is a measure of the charge retention capacity of a medium. In the table are given the values of the dielectric constant of some solids, liquids and gases for constant electric fields or for small frequencies, when the wavelength is infinitely large. The dielectric constant is expressed in terms of a ratio to that in a vacuum or (1.000000). Weight Conversion Table Dielectric Constant of Solutions The relative permittivity, or dielectric constant, is a dimensionless material property which represents a material's dielectric permittivity as a ratio relative to the permittivity of a vacuum. As indicated by e r = 1.00000 for a vacuum, all values are relative to a vacuum.. Relative permittivity is the factor by which the electric field between the charges is decreased relative to vacuum. tie number of figures retained. Multiply by ε 0 = 8.8542 x 10-12 F/m (permittivity of free space) to obtain absolute permittivity. 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