erbium
Let an agent identify erbium and its properties, relay isotopes, production and uses from reference sources, explain its role in fibre optics and lasers, and distinguish it from neighbouring lanthanides.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Identify What erbium is.
Properties
Properties.
Properties
Properties.
- What are the physical and chemical properties of erbium? definition
- Is the question about erbium or a neighbouring lanthanide? boundary
Isotopes
Isotopes.
Isotopes
Isotopes.
- Which isotopes exist, and how are they used? definition
- Which entry fits the specific isotope? action
Source Occurrence and production.
Occurrence
Occurrence.
Occurrence
Occurrence.
- Where does erbium occur, and how is it separated? provenance
- Which entry fits rare earth mining? action
Supply
Supply.
Supply
Supply.
- Who produces erbium, and how is it traded, with sources? measurement
- Which sources are cited? provenance
Use Uses.
Optics
Fibre optics and lasers.
Optics
Optics.
- How do erbium-doped fibre amplifiers and erbium lasers work, and where are they used? provenance
- Which entry fits optical amplifier? action
Other
Glass, ceramics and nuclear.
Other
Other.
- How is erbium used in colouring, alloys and neutron absorption? provenance
- Which references are standard? provenance
Context History.
Discovery
Discovery.
Discovery
Discovery.
- How was erbium discovered by Mosander in 1843 and named after Ytterby? provenance
- Which entry fits Ytterby? action
Telecom
Telecommunications history.
Telecom
Telecom.
- How did the erbium-doped fibre amplifier transform long-distance communications in the 1990s? provenance
- Which entry fits the history of fibre optics? 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
- erbium-162, erbium-163, erbium-164, erbium-165, erbium-166, erbium-167, erbium-168, erbium-169, erbium-170, erbium-171, erbium-172, erbium-173
What it is Filled
A chemical element with symbol Er and atomic number 68, a silvery lanthanide obtained from monazite, xenotime and ion-adsorption clays, whose pink-coloured compounds are used to tint glass and ceramics and whose ions amplify light in erbium-doped fibre amplifiers that carry internet traffic over optical fibre, as well as in medical and dental lasers and as a neutron absorber; erbium has six stable isotopes from erbium-162 to erbium-170 and is named after the Swedish village of Ytterby.
Why it exists Filled
Let an agent identify erbium and its properties, relay isotopes, production and uses from reference sources, explain its role in fibre optics and lasers, and distinguish it from neighbouring lanthanides.
Distinguishing features Filled
- Optical amplification at 1550 nm
- Pink compounds
- Laser uses
- Ytterby naming
What robots and AI may and may not do Filled
Must not
- Claim medical effects for erbium compounds or for lasers that use them.
- Advise handling erbium powders or compounds without proper protection.
- Hide sourcing from operations with known environmental or labour problems.
- Operate a laser containing erbium above the safe class without authorization.
Only with a human decision
- Any clinical use of erbium lasers on a person.
May
- Explain erbium's properties and its use in optical amplifiers and glass colouring.
- Report supply and production figures with source and year.
Moral aspects Filled
- Rare earth separation generates waste that has harmed land and water near plants.
- Erbium lasers are used on skin and teeth, where misuse causes burns.
Who is affected
- Communities near processing sites
- Patients treated with such lasers
- Workers handling compounds
Owners Filled
Steward
The holder of each stock; mining rights are granted by the state where it is mined.
Links to other meta-models Filled
parent
- Q105789 - registry parent class
- Q19569 - registry parent class
related
- lanthanide - in registry terms
- heavy metal - in registry terms
- erbium-doped fiber amplifier - the key telecom device
- holmium - element 67
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.erbium
- Wikidata: Q1849 (https://www.wikidata.org/wiki/Q1849)
- symbol: Er
- CAS: 7440-52-0
Direct properties required Filled
- atomic number: 68 Z
- standard atomic weight: 167.259 u
- melting point: 1529 degrees C
- stable isotopes: 6 count - Er-162, 164, 166, 167, 168, 170
Recognition required Filled
- Element 68, symbol Er
- Lanthanide of fibre amplifiers and pink glass
- Holmium and thulium are the neighbouring lanthanides
- A soft silvery metal; its compounds are pink.
Capabilities and actions required Filled
- relay properties and isotopes
- explain production and uses
- explain fibre optic role
- distinguish from other lanthanides
Hazards and failure modes required Filled
- Supply concentration
- Laser safety
- Confusing with neighbouring lanthanides
Standards and interfaces required Filled
- Chemical safety data sheets
- Medical device regulation for erbium lasers
- Rare earth trade rules
Context of use required Filled
- Fibre amplifiers, lasers, glass colouring and specialised uses.
- erbium metal
- erbium compounds such as the oxide
- stable isotopes from erbium-162 to erbium-170 and radioactive isotopes
- erbium-doped fibre and lasers
- erbium in glass, ceramics and alloys
Sources Filled
- Wikidata item Q1849: erbium - identity and sense of the item
- Wikipedia: Erbium - general description of the item
Open questions
- Should the fibre amplifier be the primary linked entry?
- How should reference data be linked?
- The registry entry has merged aliases naming isotopes; should they be split off?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q1849/spec.json