helium I


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helium I

[′hē·lē·əm ′wən]
(cryogenics)
The phase of liquid helium-4 which is stable at temperatures above the lambda point (about 2.2 K) and has the properties of a normal liquid, except low density.
References in periodicals archive ?
The report briefs about crucial role that helium plays in certain applications such as Magnetic Resonance Imaging (MRI) equipment, wherein helium is used for reducing the temperature of magnetic coils, which makes them to behave as a superconductors.
Furthermore, due to its chemical inertness and non-flammability, helium is ideal for use as a purge gas in satellite launch vehicles.
Government, helium is critical in space, defense, and advanced energy systems--there is no substitute if temperatures below minus 429 degrees Fahrenheit are needed.
Helium is a blimp which long ago lost its value as a means of cargo transportation, military reconnaissance, or anti-aircraft defence.
However, current demand has exceeded the government's expectations, according to the NAS, and a significant amount of the helium is being sold outside the United States.
If helium is a little more expensive - or a little harder to find - I'm sure we can all pull through this crisis, together.
Since helium is inert, it won't burn or react with the fuel during takeoff.
RasGas divers demonstrating underwater one of the numerous ways in which helium is used.
In the midst of increasing volatility in the traditional media industry, Helium is attracting thousands of publishers and connecting them with high quality subject matter experts on a regular basis.
Since helium is lighter than regular air, it vibrates faster, creating faster-moving sound waves.
For example, if the enclosed superfluid helium is in its zero-velocity state, displaying no net flow, the container must move relative to the helium.