2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/96764We report measurements of the electrical conductivity of a liquid alkali metal - lithium - at pressures up to 1.8 Mbar and fourfold compression, achieved through shock compression experiments. We find that the results are consistent with a departure of the electronic properties of lithium from the nearly free electron approximation at high pressures.RevTex, 4 pages, 4 figuresCondensed Mattertext