# Dielectric functions (plasmapy.formulary.dielectric)

Functions to calculate plasma dielectric parameters

## Functions

 cold_plasma_permittivity_LRP(B, species, n, ...) Magnetized cold plasma dielectric permittivity tensor elements. cold_plasma_permittivity_SDP(B, species, n, ...) Magnetized cold plasma dielectric permittivity tensor elements. permittivity_1D_Maxwellian(omega, kWave, T, ...) Compute the classical dielectric permittivity for a 1D Maxwellian plasma.

## Lite-Functions

Much of PlasmaPy’s functionality incorporates Astropy units for user convenience and to mitigate calculation errors from inappropriate units, but this comes at the sacrifice of speed. While this penalty is not significant for typical use, it can become substantial during intensive numerical calculations. Lite-functions are introduced for the specific case where speed matters, but [USER NOTICE] this comes with the reduction of safeguards so a user needs to know what they are doing! For additional details look to the glossary entry for .

 permittivity_1D_Maxwellian_lite(omega, ...) The lite-function version of permittivity_1D_Maxwellian.