Heinrich Hertz

Error creating thumbnail:

Heinrich_Rudolf_Hertz

Hertz_transmitter_and_receiver_-_English

Error creating thumbnail:

Hertz_micrometer_resonator

Hertz_first_oscillator

Hertz_radio_wave_experiments_-_parabolic_antennas

Error creating thumbnail:

Hertz_radio_wave_experiments_-_crossed_polarization

Hertz_radio_wave_experiments_-_polarization_filter

Heinrich Hertz
200px Heinrich Hertz
Born	22 February 1857 Hamburg, German Confederation
Died	1 January 1894 (aged 36) Bonn, German Empire
Nationality	German
Alma mater	University of Berlin
Known for	Electromagnetic radiation
Awards	Matteucci Medal (1888)
Scientific career
Fields	Physics
Doctoral advisor	Hermann 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

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

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

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

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

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.

Related Pages

• Electromagnetic radiation
• Maxwell's equations
• Photoelectric effect
• Guglielmo Marconi
• Radio waves
• University of Berlin
• Hermann von Helmholtz