|Fascinating facts about Heinrich
Rudolf Hertz, who proved that electricity can be transmitted in electromagnetic waves
which led to the development of wireless telegraph and the radio.
Heinrich Rudolf Hertz
invent. First practical.
22, 1857 in Hamburg, Germany
1894 in Bonn, Germany
Heinrich Rudolf Hertz, German physicist, born in Hamburg, and educated at the
University of Berlin. From 1885 to 1889 he was a professor of physics at the
technical school in Karlsruhe and after 1889 a professor of physics at the University in
Bonn. Hertz clarified and expanded the electromagnetic theory of light that had been
put forth by the British physicist James Clerk Maxwell in 1884. Hertz proved that
electricity can be transmitted in electromagnetic waves, which travel at the speed of
light and which possess many other properties of light. His experiments with these
electromagnetic waves led to the development of the wireless telegraph and the
His name also became the term
used for radio and electrical frequencies: hertz (Hz), as in kilohertz (kHz) or megahertz
(MHz). The hertz designation has been an official part of the international metric system
since 1933. Before Hertz gained professorships in Karlsruhe and Bonn, he had studied under
the famous scientist Hermann von Helmholtz in Bonn, and it was Helmholtz who encouraged
Hertz to attempt to win the science prize that led to some of Hertz's most important
discoveries. From 1885 to 1889 Hertz became the first person to broadcast and receive
radio waves, and to establish the fact that light was a form of electromagnetic radiation.
(The Italian Marconi didn't begin his own wireless experiments until 1894, based on the
earlier work of Hertz, Maxwell, and others.) Hertz probably would have gone on to make
many more scientific contributions, but he died quite young, less than a month before his
Electricity from The Great Idea Finder
ON THE BOOKSHELF:
by Hyde Flippo / Paperback: 144 pages / Contemporary Books; (May 11, 1996)
Complete with a bibliography and index, The German Way provides
keen insights into the rich variety of customs and attitudes found in German-speaking
countries. Whether you are a student, tourist, or business traveler, this book will help
you break the cultural barrier - and appreciate the way things are done in the
The Creation of
Scientific Effects: Heinrich Hertz and Electric Waves
by Jed Z. Buchwald / Paperback: 482 pages / University of Chicago Press; (August 1994)
Drawing on the lab notes, published papers, and unpublished manuscripts of Heinrich
Hertz, Buchwald recreates Hertz's 1887 invention of a device that produced electromagnetic
waves in wires.
ON THE WEB:
Heinrich Hertz laid the ground work for the vacuum tube. He laid the foundation for
the future development of radio, telephone, telegraph, and even television. He was one of
the first people to demonstrate the existence of electric waves.
Heinrich Rudolf Hertz
This site has an extensive biography and experiment history. Heinrich
Rudolf Hertz was the first to broadcast and receive radio waves in the
laboratory. Between 1885 and 1889, he used spark discharges to produce
Hertz probably would have gone on to make many more scientific contributions, but
he died quite young, less than a month before his 37th birthday.
The physicist Heinrich Hertz, born in Hamburg (1857 - 1894), discovered
electromagnetic waves. His scientific works formed the basis for radio and television
technology. The Heinrich-Hertz-School is the only "kooperative Gesamtschule" in
Hamburg. The school was founded in the year 1968.
He confirmed J. C. Maxwells electromagnetic theory and in the course of experiments
(188689) produced and studied electromagnetic waves Lots of COOKIES and POP-UP
ADS at this site.
HOW IT WORKS:
Frequency is expressed in hertz (Hz); a
frequency of 1 Hz means that there is 1 cycle or oscillation per second. The unit is named
in honor of the German physicist Heinrich Rudolf Hertz, who first demonstrated the nature
of electromagnetic wave propagation. Kilohertz (kHz), or thousands of cycles per second,
megahertz (MHz), or millions of cycles per second, and gigahertz (GHz), or billions of
cycles per second, are employed in describing certain high-frequency phenomena, such as
radio waves. Radio waves and other types of electromagnetic radiation may be characterized
either by their wavelengths, or by their frequencies. Electromagnetic waves of extremely
high frequencies, such as light and X rays, are usually described in terms of their
wavelength measure, which is often expressed in angstrom units (Å; hundred-millionths of
a cm). An electromagnetic wave that has a wavelength of 1 Å has a frequency of about 3
DID YOU KNOW?:
- Heirnrich Hertz' nephew Gustav Ludwig
Hertz was a 1925 Nobel Prize winner in Physics (together with James
Franck) "for their discovery of the laws governing the impact of an
electron upon an atom"
- Gustav's son Carl Hellmuth Hertz
invented medical ultrasonography and ink jet printing.
Sources in BOLD Type
October 10, 2006.
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The invention of the Internet,
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book, is the perfect desktop reference for both the science novice and the
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