Heinrich Hertz

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Heinrich_Rudolf_Hertz
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Heinrich Hertz
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Heinrich Hertz
Born22 February 1857
Died1 January 1894 (aged 36)
NationalityGerman
Alma materUniversity of Berlin
Known forElectromagnetic radiation
AwardsMatteucci Medal (1888)
Scientific career
FieldsPhysics
Doctoral advisorHermann von Helmholtz



Heinrich Rudolf Hertz (22 February 1857 – 1 January 1894) was a German physicist who first conclusively proved the existence of electromagnetic waves by engineering instruments to transmit and receive radio waves. His discoveries would later be used by Guglielmo Marconi to develop the radio.

Early Life and Education[edit | edit source]

Hertz was born in Hamburg, then part of the German Confederation, into a prosperous and cultured Hanoverian family. His father, Gustav Ferdinand Hertz, was a lawyer and later a senator. His mother was Anna Elisabeth Pfefferkorn. Hertz showed an early interest in the sciences and studied at the University of Berlin under the tutelage of Hermann von Helmholtz.

Career and Research[edit | edit source]

Hertz's most famous work was on electromagnetic waves. In 1887, he conducted experiments that proved the existence of Maxwell's electromagnetic waves. He used a spark-gap transmitter to produce these waves and a loop antenna with a small gap to detect them. Hertz's experiments confirmed that these waves traveled at the speed of light and exhibited properties such as reflection, refraction, and polarization.

Discovery of the Photoelectric Effect[edit | edit source]

In the course of his experiments, Hertz also discovered the photoelectric effect, which would later be explained by Albert Einstein and become a crucial piece of evidence for the quantum theory of light.

Personal Life[edit | edit source]

Hertz married Elisabeth Doll, the daughter of a colleague, in 1886. They had two daughters, Johanna and Mathilde. Hertz suffered from severe migraines and was diagnosed with a rare condition that affected his immune system. He died in 1894 at the age of 36 in Bonn, German Empire.

Legacy[edit | edit source]

The unit of frequency, the hertz (Hz), was named in his honor. His work laid the foundation for many modern technologies, including radio, television, and radar. Hertz's research also paved the way for the development of wireless communication.

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