Energy Timeline By arvindsiva102 Aug 30, 1748 US coal production begins near Richmond, Virginia Jun 15, 1752 Ben Franklin proved that static electricity and lightning were the same Jul 11, 1769 Coal begins to be used to power early steam engines Date not exact Jul 12, 1835 Joseph Henry invents the electrical relay which could send electrical currents over long distances. Date not exact May 24, 1844 Samuel Morse successfully opens the electric telegraph network, enable the machine to send messages long distances across wires. Oct 22, 1879 Successful trial of the light bulb by Thomas Edison Jul 11, 1882 The first practical coal-fired electric generating station set up in New York City to supply electricity for household lights. Date not exact Jul 12, 1905 Albert Einstein comes up with the formula of mass-energy equivalence Date not exact Jul 12, 1927 Herman Blumgart, a physician, uses radioactive tracers to diagnose heart disease. Date not exact Jun 15, 1950 Frank Bridgers designed the world's first commercial office building that features solar water heating Not exact but around
