helium
Let an agent explain helium and its properties, relay isotopes, phases, sources and uses from chemistry and physics references, describe liquid and solid helium and the isotopes the registry aliases name, and distinguish helium from hydrogen, from other noble gases and from helium-3 as a separate resource topic.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What helium is.
Definition
Definition.
Definition
Definition.
- What is helium, and how does it differ from hydrogen and other noble gases? definition
- Is the question about the element, isotopes, phases, uses or supply? boundary
Forms
Isotopes and phases.
Forms
Forms.
- What are helium-4, helium-3, helium-6, helium-8 and helium-2, and liquid and solid helium? definition
- Which entry fits the specific form? action
Physics Physics.
Superfluid
Superfluidity.
Superfluid
Superfluid.
- How does helium become superfluid, and why does it not freeze at normal pressure? provenance
- Which references are standard? provenance
Origin
Cosmic origin.
Origin
Origin.
- How was helium formed in the Big Bang and stars, and how is it produced by radioactive decay on Earth? provenance
- Which sources are cited? provenance
Uses Uses and supply.
Uses
Uses.
Uses
Uses.
- How is helium used in MRI, research, welding, leak detection and balloons? provenance
- Which entry fits cryogenics? action
Supply
Supply.
Supply
Supply.
- Where is helium produced, and what supply concerns are reported? provenance
- Which entry fits helium shortage? action
Context Safety and history.
Safety
Safety.
Safety
Safety.
- What are the hazards of helium gas and liquid helium, as safety agencies describe? provenance
- Which entry fits asphyxiant gas? action
History
History.
History
History.
- How was helium discovered by Janssen and Lockyer and first liquefied by Kamerlingh Onnes? provenance
- Which entry fits the history of cryogenics? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- helium-2, helium-4, liquid helium, solid helium, helium-8, helium-6, helium-7, helium-9, helium-10, helium-3, helium-5
What it is Filled
The chemical element with atomic number 2, symbol He, a colourless, odourless, inert noble gas, the second most abundant element in the universe, discovered in the solar spectrum in 1868, extracted on Earth from natural gas, with stable isotopes helium-4 and helium-3 and short-lived isotopes such as helium-6 and helium-8, and unbound helium-2; liquid helium boils at about 4.2 K and becomes superfluid, and solid helium forms only under pressure, making helium essential for cryogenics, MRI magnets and research.
Why it exists Filled
Let an agent explain helium and its properties, relay isotopes, phases, sources and uses from chemistry and physics references, describe liquid and solid helium and the isotopes the registry aliases name, and distinguish helium from hydrogen, from other noble gases and from helium-3 as a separate resource topic.
Distinguishing features Filled
- Inert noble gas
- Lowest boiling point
- Superfluidity
- Finite terrestrial supply
What robots and AI may and may not do Filled
Must not
- Encourage inhaling helium or using it in ways that cause asphyxiation.
- Handle liquid helium or vent it in enclosed spaces without proper safety measures.
- Waste scarce helium needed for medical and research uses.
- Misstate it as hydrogen or as flammable.
Only with a human decision
- Entering or sending people into a space where helium may have displaced oxygen.
May
- Explain helium, its properties and isotopes, citing chemistry sources.
- Monitor helium storage and oxygen levels in spaces whose operator authorized it.
Moral aspects Filled
- Helium is finite on Earth and vital for medical imaging.
- Asphyxiation by inert gas gives no warning to the victim.
Who is affected
- Workers handling gas
- Patients relying on imaging
- Researchers
Owners Filled
Steward
The supplier or holder of each cylinder or dewar; reserves are held by producers and states.
Links to other meta-models Filled
parent
- Q19600 - registry parent class
- Q19609 - registry parent class
- Q208106 - registry parent class
related
- noble gases - in registry terms
- nonmetal - in registry terms
- natural gas
- magnetic resonance imaging - to cool magnets
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.helium
- Wikidata: Q560 (https://www.wikidata.org/wiki/Q560)
- CAS: 7440-59-7 helium
- atomic number: 2
Direct properties required Filled
- atomic number: 2 count
- boiling point: 4.22 K - helium-4
- superfluid transition: 2.17 K - lambda point
- discovered: 1868 year - solar spectrum
Recognition required Filled
- Noble gas element 2
- Helium-4, helium-3, helium-6, helium-8, helium-2; liquid and solid helium
- Hydrogen is element 1 and flammable; neon and argon are heavier noble gases
- A colourless gas; liquid helium is a clear, very cold liquid.
Capabilities and actions required Filled
- explain the element
- relay isotopes and phases
- describe uses and supply
- distinguish related substances
Hazards and failure modes required Filled
- Asphyxiation in confined spaces
- Cryogenic burns from liquid helium
- Supply shortages
Standards and interfaces required Filled
- Compressed and cryogenic gas safety rules
- Strategic helium reserve policies
Context of use required Filled
- Cryogenics, lifting gas, shielding gas and research.
- helium-4
- helium-3
- unstable isotopes such as helium-6 and helium-8
- liquid helium and superfluid helium II
- solid helium under pressure
Sources Filled
- Wikidata item Q560: helium - identity and sense of the item
- Wikipedia: Helium - general description of the item
Open questions
- Should liquid helium and helium-3 be separate primary entries?
- How should chemistry and physics references be linked?
- The registry entry has merged aliases naming isotopes and phases; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q560/spec.json