Watergraafsmeer in Amsterdam, North Holland, Netherlands — Northwestern Europe
Marconi
Photographed by Andrew Ruppenstein, March 17, 2025
1. Marconi Marker
Hij was een Italiaanse natuurkundige en uitvinder van de draadloze telegrafie, de voorloper van de radio. De jonge Marconi volgde scholen in Bologna en Florence en ging hierna naar de technische hogeschool in Livorno. Daar besteedde hij veel tijd aan het bestuderen van elektromagnetische golfverschijnselen. Na zijn studietijd experimenteerde hij op het landgoed van zijn vader. Hij ontdekte dat de te overbruggen afstand aanzienlijk vergroot kon worden als één pool van de zender verbonden werd met een metalen plaat die op een lange paal bevestigd was. Dit wordt gezien als de eerste echte radio-antenne.
He was an Italian physicist and inventor of wireless telegraphy, the precursor to radio. The young Marconi attended schools in Bologna and Florence and then went on to the technical college in Livorno. There, he spent much time studying electromagnetic wave phenomena. After his studies, he experimented on his father's estate. He discovered that the distance could be significantly increased by connecting one pole of the transmitter to a metal plate attached to a long pole. This is considered the first true radio antenna.
Topics and series. This historical marker is listed in these topic lists: Communications • Science & Medicine. In addition, it is included in the Give Streets a Face / Geef Straten Een Gezicht, and the Scientists (GSEG) series lists.
Location. 52° 21.155′ N, 4° 56.573′ E. Marker is in Amsterdam, Noord-Holland (North Holland). It is in Watergraafsmeer. It is at the intersection of Marconistraat and Johannes van der Waalstraat on Marconistraat. Touch for map. Marker is at or near this postal address: Johannes van der Waalsstraat 62I, Amsterdam, Noord-Holland
this page online
Regionally, it is in Europe, the European Union, Atlantic Europe, the Benelux Low Countries, the Schengen Area, Western Europe, and the Western World. Historically, it finds itself in what was once the Holy Roman Empire.
Other nearby markers. At least 8 other markers are within walking distance of this marker: Johannes van der Waals (within shouting distance of this marker); Alessandro Volta (about 120 meters away, measured in a direct line); Avogadro (about 150 meters away); Rutherford (about 150 meters away); Ohm (about 180 meters away); Lord Kelvin (about 210 meters away); Berthelot (about 210 meters away); Max Planck (approx. 0.2 kilometers away). Touch for a list and map of all markers in Amsterdam.
Also see . . . Guglielmo Marconi (Wikipedia). Excerpt:
Guglielmo Giovanni Maria Marconi, 1st Marquess (25 April 1874 – 20 July 1937), was an Italian radio-frequency engineer, inventor, and politician known for his creation of a practical radio wave-based wireless telegraph system. This led to him being largely credited as the inventor of radio and sharing the 1909Nobel Prize in Physics with Ferdinand Braun "in recognition of their contributions to the development of wireless telegraphy". His work laid the foundation for the development of radio, television, and all modern wireless communication systems.Photographed by Andrew Ruppenstein, November 3, 20222. Marconi Marker - wide view
As an entrepreneur and a businessman, Marconi founded the Marconi Company in the United Kingdom in 1897. In 1929, he was ennobled as a marquess (Italian: marchese) by Victor Emmanuel III. In 1931, he set up Vatican Radio for Pope Pius XI. (Submitted on November 11, 2025.)
Credits. This page was last revised on November 11, 2025. It was originally submitted on November 11, 2025, by Andrew Ruppenstein of Lamorinda, California. This page has been viewed 37 times since then and 11 times this year. Photos: 1, 2. submitted on November 11, 2025, by Andrew Ruppenstein of Lamorinda, California.
