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Hertz, Heinrich Rudolf
A German physicist who clarified and expanded James Clerk Maxwell's electromagnetic theory of light, which was first demonstrated by David Edward Hughes using non-rigorous trial and error procedures. Hertz is distinguished from Maxwell and Hughes because he was the first to conclusively prove the existence of electromagnetic waves by engineering instruments to transmit and receive radio pulses using experimental procedures that ruled out all other known wireless phenomena. The scientific unit of frequency — cycles per second — was named the "hertz" in his honor.

Joule, James Prescott
An English physicist, born in Salford, Lancashire. Joule studied the nature of heat, and discovered its relationship to mechanical work. This led to the theory of conservation of energy, which led to the development of the first law of thermodynamics. The SI derived unit of energy, the joule, is named after him.

Kilby, Jack St. Clair
Jack St. Clair Kilby (November 8, 1923 – June 20, 2005) was an American electrical engineer who took part in the realization of the first integrated circuit while working at Texas Instruments (TI) in 1958.
He is also the inventor of the handheld calculator and the thermal printer, for which he has patents. He also has patents for seven other inventions.

Maxwell, James Clerk
Scottish mathematical physicist. His most prominent achievement was to formulate a set of equations that describe electricity, magnetism, and optics as manifestations of the same phenomenon, namely the electromagnetic field. Maxwell's achievements concerning electromagnetism have been called the "second great unification in physics", after the first one realised by Isaac Newton.


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