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