permittivity
Electric field susceptibility
Permittivity measures how easily an electric field can pass through a material—how much the material "permits" the field.
A high permittivity means the material reduces the field's strength more than a low-permittivity material would.
Vacuum has the lowest permittivity, used as a baseline constant in physics.
The term appears in equations governing capacitors, electromagnetic waves, and dielectric materials: The permittivity of water makes it effective at dissolving ionic compounds.
Greek fifth letter
- electric fieldRegion affecting nearby charges
- electrostaticsStudy of stationary charges
- electromagnetismForce linking charge and magnetism
- electromagnetic waveSelf-propagating field oscillation
Charge-storing circuit element
- capacitanceElectrical charge storage measure
- faradSI capacitance measure
- energy storageCapturing power for later
- voltageElectrical potential difference
Separation into opposing extremes
- insulatorSubstance resisting energy flow
- piezoelectricCharge from deformation
- nonconductorBlocks electrical or thermal transfer
- electrical insulationMaterial blocking current escape
epsilon
Greek fifth letter
- electric fieldRegion affecting nearby charges
- electrostaticsStudy of stationary charges
- electromagnetismForce linking charge and magnetism
capacitor
Charge-storing circuit element
- capacitanceElectrical charge storage measure
- faradSI capacitance measure
- energy storageCapturing power for later
polarization
Separation into opposing extremes
- insulatorSubstance resisting energy flow
- piezoelectricCharge from deformation
- nonconductorBlocks electrical or thermal transfer
permittivitypermeability
Ability to transmit fluids
conductivity · electrical conductivity · impermeability · resistivity
permit, permission, permitted, permissible, permitting, permits, permeable, permissive, impermeable