When was it proposed that electricity and magnetism were distinct effects by scientists William Gilbert ?
Others who would advance the field of knowledge included William Watson , Boze , Smeaton , Louis Guillaume Le Monnier , Jacques de Romas , Jean Jallabert , Giovanni Battista Beccaria , Tiberius Cavallo , John Canton , Robert Symmer , Abbot Nollet , John Henry Winkler , Richman , Dr. Wilson , Kinnersley , Joseph Priestley , Franz Aepinus , Edward Hussey Délavai , Henry Cavendish and Charles - Augustin de Coulomb .