liquid helium

Coldest common refrigerant

Liquid helium is helium cooled to extremely low temperatures, below -269°C (-452°F), where it becomes a liquid.

It serves as a coolant for superconducting magnets in MRI machines, particle accelerators, and research equipment.

Below about 2 Kelvin, helium becomes a superfluid with bizarre properties—zero viscosity, the ability to climb container walls, and flow through microscopic openings.

cryogenics

cryostat

Maintains cryogenic temperatures

properties

inert

Inactive, physically or chemically

odorless · nonflammable · monatomic

coolant

MRI

Magnetic body imaging

refrigerant

superfluidity

superfluid

Frictionless quantum liquid

Categories
Opposites
phase/state of matter

liquid heliumhelium gas

Lightest noble element

molten iron · molten metal · molten lava · molten salt · plasma

cryogenic substances

liquid heliumliquid nitrogen

Cryogenic form of air's main component

liquid oxygen · liquid hydrogen

Family

liquid, liquids, liquefy, helium, liquify, liquidity, liquefied, deliquesce, liquified

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G