While it's all over the universe, there are only a few places on Earth where helium is
blown away from the day side of the planet to its night side at over 10'000 km/h because it is such a light gas, it escapes easily from the attraction of the planet and forms an extended cloud all around it," Vincent Bourrier, co-author of the study, explained.
essential to many applications such as magnetic resonance imaging (MRI); fibre optics and semiconductor manufacturing; metallurgy; breathing atmospheres for deep diving or unique blood gas medical mixtures; lifting for high altitude scientific research balloons, blimps; and other advanced applications.
an excellent contender for carrier gas but increasing prices and supply shortage are raising concerns among scientists as well as sourcing communities.
The reality is, helium is
extremely rare on the Earth's surface.
Furthermore, recycle systems are easily installed, and when maintenance is performed on such a system, the ongoing supply of helium is
maintained by providing bulk helium as a backup.
a byproduct of natural gas and the current crisis is one of supply and demand, with the global demand for helium for everything from balloons to MRI machines far outpacing the noble gas' scarce supply.
the second element of the periodic table and is one of the most abundant elements in the universe, yet it is fairly rare on Earth.
A world shortage of liquid helium is
expected to remain severe at least until the second half of 2013.
The thermal conductivity of helium is
at least five times that of air in the temperature range between 77-932F (25-500C).
That is, although helium is
typically regarded as a nonpsychoactive gas (an issue we discuss below), these decedents were nonetheless attempting to get high using helium and suffocated in consequence.
the only element that can remain at a sufficiently cold temperature to allow for the stable and uniform magnetic field the MRI scanners need to work.