Property talk:P1645
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Documentation
NIST/CODATA ID
identifier for a physical constant
identifier for a physical constant
Description | Identifier on the NIST website for the CODATA values of physical constants | ||||||||||||
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Associated item | Committee on Data for Science and Technology (Q735279) | ||||||||||||
Data type | External identifier | ||||||||||||
Domain | According to this template:
physical property (Q4373292)
According to statements in the property:
When possible, data should only be stored as statementsphysical constant (Q173227) | ||||||||||||
Allowed values | According to this template:
letters and numbers
According to statements in the property:
When possible, data should only be stored as statements[^\d]+(\d?[a-z]?)+ | ||||||||||||
Example | speed of light in vacuum (Q2111) → c Planck constant (Q122894) → h | ||||||||||||
Source | http://physics.nist.gov/cuu/Constants/index.html | ||||||||||||
Formatter URL | http://physics.nist.gov/cgi-bin/cuu/Value?$1 | ||||||||||||
Lists |
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Proposal discussion | Proposal discussion | ||||||||||||
Current uses |
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Search for values |
[create Create a translatable help page (preferably in English) for this property to be included here]
Distinct values: this property likely contains a value that is different from all other items. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). List of violations of this constraint: Database reports/Constraint violations/P1645#Unique value, SPARQL (every item), SPARQL (by value)
Single value: this property generally contains a single value. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). List of violations of this constraint: Database reports/Constraint violations/P1645#Single value, SPARQL
Type “physical constant (Q173227)”: item must contain property “instance of (P31)” with classes “physical constant (Q173227)” or their subclasses (defined using subclass of (P279)). (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). List of violations of this constraint: Database reports/Constraint violations/P1645#Type Q173227, SPARQL
List of violations of this constraint: Database reports/Constraint violations/P1645#Format, hourly updated report, SPARQL
Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). List of violations of this constraint: Database reports/Constraint violations/P1645#Entity types
Scope is as main value (Q54828448), as reference (Q54828450): the property must be used by specified way only (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303). List of violations of this constraint: Database reports/Constraint violations/P1645#Scope, SPARQL