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See all on WikipediaLiquid helium - Wikipedia
Liquid helium is a physical state of helium at very low temperatures at standard atmospheric pressures. Liquid helium may show superfluidity. At standard pressure, the chemical element helium exists in a liquid form only at the extremely low temperature of −269 °C (−452.20 °F; 4.15 K). Its boiling point and … See more
Helium was first liquefied on July 10, 1908, by the Dutch physicist Heike Kamerlingh Onnes at the University of Leiden in the Netherlands. At that time, helium-3 was unknown because the See more
• Liquid helium (in a vacuum bottle) at 4.2 K (−268.95 °C) and 1 bar (15 psi) boiling slowly.
• Lambda … See more• He-3 and He-4 phase diagrams, etc.
• Helium-3 phase diagram, etc.
• Onnes's liquifaction of helium
• Kamerlingh Onnes's 1908 article, online and analyzed on BibNum Archived 2018-02-18 at the Wayback Machine [for English analysis, … See moreThe temperature required to produce liquid helium is low because of the weakness of the attractions between the helium atoms. These interatomic forces in helium are weak to begin with … See more
In 1908, Kamerlingh-Onnes succeeded in liquifying a small quantity of helium. In 1923, he provided advice to the Canadian physicist John Cunningham McLennan, who was the first to produce quantities of liquid helium almost on demand.
In 1932 Einstein … See moreWikipedia text under CC-BY-SA license Introduction to Liquid Helium - NASA
WEBLiquid helium, because of its low boiling point, is used in many cryogenic systems when temperatures below the boiling point of nitrogen are needed. A convenient way to cool many kinds of apparatus is to …
The World Is Constantly Running Out Of Helium. Here's Why It …
WEBMagnetic resonance imaging, or MRI, technology uses superconductors cooled by liquid helium.
Questions and Answers About Liquid Helium | WIRED
WEBThe primary reason to use liquid helium is that it is cold. Super cold. At normal atmospheric pressure, liquid helium boils at at temperature of just 4.2 Kelvins (-452.11 Fahrenheit).
How is helium turned into a liquid and a superfluid?
WEBHow is helium turned into a liquid and a superfluid? - BBC Science Focus Magazine.
Superfluidity - Wikipedia
WEBSuperfluidity occurs in two isotopes of helium (helium-3 and helium-4) when they are liquefied by cooling to cryogenic temperatures. It is also a property of various other …
Helium - Wikipedia
WEBLiquid helium is used in cryogenics (its largest single use, consuming about a quarter of production), and in the cooling of superconducting magnets, with its main commercial application in MRI scanners.
Secrets of superfluid helium explored - Phys.org
WEBJuly 10, 2017. Secrets of superfluid helium explored. by Bill Steele, Cornell University. When Cornell physicists Robert Richardson, David Lee and Douglas Osheroff received …
Superfluidity | Physics of Low-Temperature Fluids | Britannica
WEBSuperfluidity, the frictionless flow and other exotic behaviour observed in liquid helium at temperatures near absolute zero (−273.15 °C, or −459.67 °F), and (less widely used) …
Eighty years of superfluidity - Nature
WEBEighty years of superfluidity. In 1938, two studies demonstrated that liquid helium-4 flows without friction or viscosity at temperatures close to absolute zero. The finding led to major...
Helium | Definition, Properties, Uses, & Facts | Britannica
WEBHelium is used as an inert-gas atmosphere for welding metals such as aluminum; in rocket propulsion (to pressurize fuel tanks, especially those for liquid hydrogen, because …
Helium - Element information, properties and uses | Periodic Table
WEBUses. Helium is used as a cooling medium for the Large Hadron Collider (LHC), and the superconducting magnets in MRI scanners and NMR spectrometers. It is also used to …
Strange but True: Superfluid Helium Can Climb Walls
WEBKey to the effect is helium's unique ability to remain liquid down to absolute zero (–459.67 degrees F, or –273.15 degrees C), the temperature at which atoms theoretically stop …
Liquid Helium - an overview | ScienceDirect Topics
WEBLiquid Helium refers to a strongly correlated quantum fluid that has been extensively studied in the field of physics. It is known for its unique physical properties and has …
Helium: Sources and Uses - University of Pittsburgh
WEBMost importantly for our purposes it is used in its liquid state at 4K (-452F) to perform cutting edge scientific experiments probing the structure of matter across physics, …
8 Surprising High-Tech Uses for Helium - NBC News
WEBLabs all over the U.S. use liquid helium to cool instruments that will only work at super-low temperatures. The devices that measure very small magnetic fields for brain cell …
The era of cheap helium is over—and that’s already causing …
WEBLiquid helium is therefore essential to any technology that uses superconducting magnets, including magnetic resonance imaging (MRI) scanners and some fusion …
Helium is vital for medicine – just as well we discovered more of …
WEBThis rare element is critical to medicine where ultra-low-temperature liquid helium is used to cool the superconducting magnets in MRI scanners. About a third of all produced …
Facts About Helium | Live Science
WEBLiquid helium also cools the magnets in the Large Hadron Collider, the world's largest particle accelerator, down to -456.34 degrees Fahrenheit (-271.3 degrees Celsius).
Liquid Helium - an overview | ScienceDirect Topics
WEBUses. Liquid helium is used to produce low temperatures. The inert, nonflammable gas is used in balloons and in scientific studies (e.g., meteorological). It is also used in inert …
LHC filling with liquid helium at 4 kelvin | CERN
WEBLast week the cryogenics team at CERN finished filling the arc sections of the Large Hadron Collider (LHC) with liquid helium. The helium, which is injected into magnets that steer …
Superfluid helium-4 - Wikipedia
WEBSuperfluid helium-4 (helium II or He-II) is the superfluid form of helium-4, an isotope of the element helium. A superfluid is a state of matter in which matter behaves like a fluid with …
Putting the Squeeze on Helium | National Ignition Facility
WEBPutting the Squeeze on Helium. Third in a series of articles describing current National Ignition Facility (NIF) Discovery Science experimental campaigns. Part 1: “Using NIF to …
National Lab Creates Glass Test Cell to Peek Inside Molten Salt ...
WEBTo better understand this behavior, ORNL researchers successfully designed and developed a customized glass test cell at the lab’s glass shop that can hold up to one …
Coulomb Interaction-Driven Entanglement of Electrons on Helium
WEB(a) Schematic microdevice, in which two electrons are trapped on the surface of a liquid helium basin in a double-well potential created by electrodes 1–7. Control and readout …
Uses of Helium - The National Academies Press
WEBFor example, liquid helium is used to cool the superconducting magnets required for nuclear magnetic resonance (NMR), which is a critical tool in structural chemistry.
Southwest Airlines’ soda cans are exploding on planes. Here’s …
WEBA routine part of the job for Southwest Airlines flight attendants is turning into a dangerous mess as a searing summer heat and the airline’s beverage management practices have …
Starliner astronauts' return still not set: Timeline of launch, issues
WEBOn May 21, the team was able to replace the valve and repressurize the system, but then engineers encountered another obstacle: a small helium leak in Starliner's service …
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