Watergraafsmeer in Amsterdam, North Holland, Netherlands — Northwestern Europe
Fizeau
Photographed By Andrew Ruppenstein, November 3, 2022
1. Fizeau Marker
Armand Hippolyte Fizeau 1819-1896
De Franse natuurkundige Fizeau was in 1849 de eerste die een betrouwbare methode ontwikkelde om de lichtsnelheid op aarde te bepalen. Hij werkte lange tijd samen met Léon Foucault, met wie hij onder andere in 1845 de eerste gedetailleerde foto van de zon maakte. Ook toonde Fizeau aan dat de lichtsnelheid een constante was en wist hij de snelheid van elektriciteit te meten. Al zijn onderzoek leverde hem in 1860 het lidmaatschap van de Franse Académie des sciences op, in 1866 de Rumford Medal van de Royal Society of London en zijn naam als een van de 72 prominenten in gouden letters op de Eiffeltoren.
(English translation:)
In 1849, the French physicist Fizeau was the first to develop a reliable method to determine the speed of light on Earth. He worked for a long time with Léon Foucault, with whom he took the first detailed photo of the sun in 1845, among other things. Fizeau also showed that the speed of light was a constant and he was able to measure the speed of electricity. All his research earned him membership in the French Academy of Science in 1860, the Rumford Medal of the Royal Society of London in 1866, and his name as one of the 72 prominent figures in gold lettering on the Eiffel Tower.
Erected by
this page online
Topics and series. This historical marker is listed in this topic list: Science & Medicine. In addition, it is included in the Give Streets a Face / Geef Straten Een Gezicht, and the Scientists (GSEG) series lists. A significant historical year for this entry is 1849.
Location. 52° 20.708′ N, 4° 55.576′ E. Marker is in Amsterdam, Noord-Holland (North Holland). It is in Watergraafsmeer. Marker is at the intersection of Fizeaustraat and Fahrenheitstraat, on the right when traveling east on Fizeaustraat. Touch for map. Marker is at or near this postal address: Fizeaustraat 4, Amsterdam, Noord-Holland 1097 NX, Netherlands. Touch for directions.
Other nearby markers. At least 8 other markers are within walking distance of this marker. Fahrenheit (here, next to this marker); Celsius (approx. 0.2 kilometers away); Von Liebig (approx. 0.3 kilometers away); Torricelli (approx. 0.3 kilometers away); Transvaalbuurt Jewish Deportation Memorial (approx. one kilometer away); Concentratiebuurt / “Concentration”-hood (approx. one kilometer away); Gallileï / Galileo (approx. 1.1 kilometers away); Transvaalbuurt Monument deportatie Joodse kinderen / Monument to Deported Jewish Children (approx. 1.1 kilometers away). Touch for a list and map of all markers in Amsterdam.
Also see . . . Hippolyte Fizeau (Wikipedia).
Excerpt: In 1849, Fizeau calculated a(Submitted on November 16, 2022, by Andrew Ruppenstein of Lamorinda, California.)value for the speed of light to a better precision than the previous value determined by Ole Rømer in 1676. He used a beam of light reflected from a mirror 8 kilometers away. The beam passed through the gaps between teeth of a rapidly rotating wheel. The speed of the wheel was increased until the returning light hit the next tooth and could not be seen. Fizeau calculated the speed of light to be 313,300 kilometres per second (194,700 mi/s), which was within 5% of the correct value (299,792.458 kilometers per second). Fizeau published the first results obtained by his method for determining the speed of light in 1849…. Fizeau made the first suggestion in 1864 that the "speed of a light wave be used as a length standard"….Fizeau was involved in the discovery of the Doppler effect, which is known in French as the Doppler–Fizeau effect.Photographed By Andrew Ruppenstein, November 3, 20222. Fizeau Marker - wide viewThe Fizeau marker is visible on the corner of the building, with the Fahrenheit marker just to the right of it.
Credits. This page was last revised on February 3, 2023. It was originally submitted on November 15, 2022, by Andrew Ruppenstein of Lamorinda, California. This page has been viewed 69 times since then and 11 times this year. Photos: 1, 2. submitted on November 15, 2022, by Andrew Ruppenstein of Lamorinda, California.
