== وصلات خارجية ==*"Heroes of the Telegraph" at Project Gutenberg*"Horses on Mars", from Lord Kelvin*William Thomson: king of Victorian physics at Institute of Physics website*"Measuring the Absolute: William Thomson and Temperature", Hasok Chang and Sang Wook Yi (PDF file)*"Reprint of papers on electrostatics and magnetism" (gallica)*"The molecular tactics of a crystal" (Internet Archive)*"Quotations.