David F. Flynn Electrician Master License # 13309M
Electrical Contractor, Sandwich, N.H. Call us:603-707-0923
Serving the Lakes Region of New Hampshire
1752
1660
Otto von Guericke invented a machine that produced static electricity.
1675
Robert Boyle discovered that electric force could be transmitted through a vacuum and observed attraction and repulsion.
1729
Stephen Gray's discovery of the conduction of electricity.
1733
Charles Francois du Fay discovered that electricity comes in two forms which he called resinous(-)and vitreous(+).
Benjamin Franklin and Ebenezer Kinnersley later renamed the two forms as positive and negative.
1745
Georg Von Kleist discovered that electricity was controllable. Dutch physicist, Pieter van Musschenbroek invented the "Leyden Jar" the first electrical capacitor. Leyden jars store static electricity.
Benjamin Franklin flies a kite during a thunderstorm and collects a charge in a Leyden jar when the kite is struck by lightning, enabling him to demonstrate the electrical nature of lightning. He coined a number of terms used today, including battery, conductor and electrician. He also invented the lightning rod, used to protect buildings and ships.
1893
Westinghouse demonstrates "universal system" of generation and distribution at Chicago exposition.
In Austin, Texas, the first dam designed specifically for hydroelectric power built across Colorado River is completed.
1897
Electron discovered by J. J. Thomson.
1900
Highest voltage transmission line 60 Kilovolt.
1902
5-Megawatt turbine for Fisk St. Station (Chicago).
1903
First successful gas turbine (France). World’s first all turbine station (Chicago). Shawinigan Water & Power installs world’s largest generator (5,000 Watts) and world’s largest and highest voltage line—136 Km and 50 Kilovolts (to Montreal). Electric vacuum cleaner. Electric washing machine.
1904
John Ambrose Fleming invented the diode rectifier vacuum tube.
1905
in Sault Ste. Marie, Michigan the first low head hydro plant with direct connected vertical shaft turbines and generators is opened.
1906
In Ilchester, Maryland, a fully submerged hydroelectric plant is built inside Ambursen Dam.
1907
Lee De Forest invented the electric amplifier.
1909
The first pumped storage plant is opened in Switzerland.
1910
Ernest R. Rutherford measured the distribution of an electric charge within the atom.
1911
Willis Haviland Carrier disclosed his basic Rational Psychrometric Formulae to the American Society of Mechanical Engineers. The formula still stands today as the basis in all fundamental calculations for the air conditioning industry.
1913
R. D. Johnson invents the differential surge tank and Johnson invents hydrostatic penstock valve.
1917
Electric refrigerator is invented. Robert Millikan measured the electric charge on a single electron.
1920
Hydracone draft tube patented by W. M. White.
1922
First U.S. station to only burn pulverized coal is opened.
1928
Connecticut Valley Power Exchange (CONVEX) starts, pioneering interconnection between utilities.
1933
Construction of Boulder Dam begins.
1936
The Public Utility Holding Company Act is passed. The Federal Power Act is passed. The Securities and Exchange Commission is established. The Bonneville Power Administration is established.
1920s.
The first night baseball game in major leagues is played made possible by electric lighting.
Highest steam temperature reaches 900 degrees Fahrenheit vs. 600 degrees Fahrenheit in early
287 Kilovolt line runs 266 miles to Boulder (Hoover) Dam.
1947
The Rural Electrification Act is passed.
1953
The transistor is invented .
The first 345 Kilovolt transmission line is laid.
1954
The first nuclear power station ordered.
The first high voltage direct current (HVDC) line (20 megawatts/1900 Kilovolts, 96 Km).
