Template talk:Relative permittivity table

High frequency permittivity
So.... is there a table out there somewhere for high-frequency permittivity (i.e. $$\varepsilon_\infty$$ which means we take $$\varepsilon (\omega)$$ at optical frequencies)? This would be super-useful. I haven't found one yet. I'll probably create one. -- Blue.painting (talk) 00:18, 1 June 2019 (UTC)