Leiden, South Holland, Netherlands — Northwestern Europe
Heike Kamerlingh Onnes: Vloeibarr Helium
Door Meten, Tot Weten
⎯⎯⎯
Liquid Helium
Knowledge Through Measurement
Photographed by Andrew Ruppenstein, July 24, 2022
1. Heike Kamerlingh Onnes: Vloeibarr Helium / Liquid Helium Marker
Heike Kamerling Onnes bereikte op 10 juli 1908 als eerste de temperatuur van vloeibaar helium
On July 10, 1908, Heike Kamerlingh Onnes was the first to achieve the temperature for liquid helium.
Erected 2008 by Leids Instituut voor Onderzoek in de Natuurkunde.
Topics. This historical marker is listed in this topic list: Science & Medicine. A significant historical date for this entry is July 10, 1908.
Location. 52° 9.366′ N, 4° 29.393′ E. Marker is in Leiden, Zuid-Holland (South Holland). It is at the intersection of Steenschuur and Langebrug, on the left when traveling east on Steenschuur. Touch for map. Marker is at or near this postal address: Steenschuur 25, Leiden, Zuid-Holland 2311 EZ, Netherlands. Touch for directions.
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 Roman Empire and specifically also the Holy Roman Empire.
Other nearby markers. At least 8 other markers are within walking distance of this marker: Het koudste plekje op aarde / The Coldest Place on Earth (within shouting distance of this marker); De Buskruitramp / The Gunpowder Disaster (within shouting distance of this marker); Drukkerij en Kantoor Uitgeversmaatschappij A.W. Sijthoff (about 120 meters away, measured in a direct line); Willebrord Snel van Royen (Snellius 1580-1626) (about 120 meters away); Lodewijkskerk / St. Louis Church (about 120 meters away); Jan Steen
this page online
Also see . . .
1. Heike Kamerlingh Onnes (Wikipedia, in English).
Excerpts: Heike Kamerlingh Onnes (21 September 1853 21 February 1926) was a Dutch physicist and Nobel laureate. He exploited the HampsonLinde cycle to investigate how materials behave when cooled to nearly absolute zero and later to liquefy helium for the first time, in 1908. He also discovered superconductivity in 1911....(Submitted on October 24, 2022.)
On 10 July 1908, he was the first to liquefy helium, using several precooling stages and the HampsonLinde cycle based on the JouleThomson effect. This way he lowered the temperature to the boiling point of helium (−269 °C, 4.2 K). By reducing the pressure of the liquid helium he achieved a temperature near 1.5 K. These were the coldest temperatures achieved on earth at the time. The equipment employed is at the Museum Boerhaave in Leiden.
2. Heike Kamerling Onnes (Wikipedia, in Dutch). A much more detailed biography of Onnes than the English Wikipedia version.
Excerpt from the trivia section (in translation): When Albert Einstein had just graduated, he applied for a job with Kamerlingh Onnes. Onnes never even replied to his postcard. Later,(Submitted on October 24, 2022.)partly due to Onnes' efforts, Einstein was nevertheless brought to Leiden as an endowed professor.Photographed by Andrew Ruppenstein, July 24, 20222. Heike Kamerlingh Onnes: Vloeibarr Helium / Liquid Helium Marker - wide viewOnnes' statue stands outside the university building named after him.
Additional keywords. Nobel physics cryogenics superconductivity
Photographed by Andrew Ruppenstein, July 24, 2022
3. Bust of Heike Kamerlingh Onnes
Door Meten, Tot Weten - "Knowledge through measurement", was the slogan of Onnes' laboratory. He introduced this motto in his inaugural address in 1882, thereby indicating the importance he attached to experimental work in acquiring knowledge. - Wikipedia.nl article on Heike Kamerlingh Onnes
courtesy of Wikimedia Commons
4. Portrait of Heike Kamerlingh Onnes
Credits. This page was last revised on December 24, 2023. It was originally submitted on October 24, 2022, by Andrew Ruppenstein of Lamorinda, California. This page has been viewed 257 times since then and 44 times this year. Photos: 1, 2, 3, 4. submitted on October 24, 2022, by Andrew Ruppenstein of Lamorinda, California.
