. . "Scottishphysicistand a pioneer in the field ofelectro-optics" . "1824Z"^^ . "Kerr, John"@en . "1907-08-15Z"^^ . "John Kerr FRS (17 December 1824 \u2013 15 August 1907) was a Scottish physicist and a pioneer in the field of electro-optics. He is best known for the discovery of what is now called the Kerr effect."@en . . "John Kerr (physicist)"@en . . . "1907Z"^^ . "1824-12-17Z"^^ .