radium
Let an agent explain radium as an element, relay its properties, history and hazards from reference and regulatory sources, describe legacy contamination and the radium dial painters as history, and route questions about radium in buildings or antiques to radiation protection authorities.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Element What radium is.
Properties
Properties and decay.
Properties
Properties.
- What are the properties and isotopes of radium, and how does it decay? definition
- Is the question about radium, radon or uranium? boundary
Occurrence
Occurrence.
Occurrence
Occurrence.
- Where does radium occur, including in water and industrial scale? provenance
- Which entry fits naturally occurring radioactive material? action
History Discovery and use.
Discovery
The Curies.
Discovery
Discovery.
- How was radium discovered and isolated? provenance
- Which entry fits Marie Curie? action
Uses
Historical uses and harm.
Uses
Uses.
- How was radium used in paint, medicine and consumer products, and what harm followed, including to the dial painters? provenance
- Which references are standard? provenance
Safety Hazards today.
Objects
Radium objects.
Objects
Objects.
- What do authorities advise about radium-painted antiques and luminous items? provenance
- Is the user asking about a specific object or building, which needs a radiation protection authority? boundary
Sites
Legacy sites.
Sites
Sites.
- How are legacy contaminated sites identified and remediated? provenance
- Which entry fits radioactive contamination? action
Context Science and units.
Units
The curie.
Units
Units.
- How did radium define the curie, and how does it relate to the becquerel? provenance
- Which entry fits units of radioactivity? action
Research
Research.
Research
Research.
- What research uses radium today, such as radium-223 in medicine? provenance
- Is the user asking about their own treatment, which needs a clinician? boundary
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.MAT
- Other names and narrower kinds
- radium-202, radium-203, radium-203m, radium-204, radium-205, radium-205m, radium-206, radium-207, radium-207m, radium-208, radium-208m, radium-209
What it is Filled
A radioactive alkaline earth metal, chemical element 88, discovered by Marie and Pierre Curie in 1898 in uranium ore; its isotope radium-226 has a half-life of about 1600 years and decays to radon, it was once used in luminous paint, medicine and quack products with serious harm to workers and patients, and present uses include research and established cancer therapy with radium-223, alongside legacy radiotherapy sources.
Why it exists Filled
Let an agent explain radium as an element, relay its properties, history and hazards from reference and regulatory sources, describe legacy contamination and the radium dial painters as history, and route questions about radium in buildings or antiques to radiation protection authorities.
Distinguishing features Filled
- Radioactive alkaline earth metal
- Decays to radon
- Historical luminous and medical uses
- Legacy contamination sites
What robots and AI may and may not do Filled
Must not
- Help obtain, handle or dispose of radium outside licensing and radiation protection rules.
- Present radium products as healthy or safe to use.
- Disturb contaminated sites without radiation protection controls.
- Help use radioactive material to harm people.
Only with a human decision
- Removing or disposing of radium sources or contaminated items.
May
- Report radium's properties, history and hazards from authoritative sources.
- Flag legacy items, such as luminous dials or old medical sources, for checks by radiation protection specialists.
Moral aspects Filled
- Radium harmed workers such as dial painters who were not told of the danger.
- Contaminated legacy sites still expose people today.
Who is affected
- Workers and collectors
- Residents near contaminated sites
- The public
Owners Filled
Steward
The licensed holder of each source under the national radiation regulator.
Master systems
- National registers of radioactive sources
Links to other meta-models Filled
parent
- Q19563 - registry parent class
related
- alkaline earth metal - group 2
- radon - its daughter
- uranium - decay chain parent
- Marie Curie - with Pierre Curie in 1898
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.radium
- Wikidata: Q1128 (https://www.wikidata.org/wiki/Q1128)
- chemical symbol: Ra
- CAS number: 7440-14-4
Direct properties required Filled
- atomic number: 88
- half-life of radium-226: about 1600 years
- historical unit: the curie unit - defined from the activity of one gram of radium-226
Recognition required Filled
- Element 88, alkaline earth metal
- Decays to radon gas
- Radon is the gaseous daughter; uranium is the parent element
- Silvery-white metal that blackens in air; historically seen as glowing luminous paint on dials.
Capabilities and actions required Filled
- explain properties and decay
- relay history of discovery and use
- relay hazards and legacy contamination guidance
- route questions about radium objects to authorities
Hazards and failure modes required Filled
- Radiation dose from ingestion and inhalation
- Radon release from radium in materials
- Contaminated legacy sites and objects
- Historical harm to dial painters and patients
Standards and interfaces required Filled
- Radiation protection regulations and ICRP recommendations
- Rules on naturally occurring radioactive material in industry
- Regulations on radioactive antiques and luminous items
- Legacy site remediation programmes
Context of use required Filled
- Historically luminous paint and radiotherapy; now little practical use.
- radium-226 from the uranium chain
- radium-228 from the thorium chain
- radium in luminous paint and antiques
- radium in legacy contaminated sites
- radium in water and scale from oil and gas
Sources Filled
- Wikidata item Q1128: radium - identity and sense of the item
- Wikipedia: Radium - general description of the item
Open questions
- Should the dial painters history be a separate entry?
- How should legacy site registers be linked?
- The registry entry has merged isotope aliases; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q1128/spec.json