File:Dose_quantities_and_units.png · Wikimedia Commons · See Wikimedia Commons
Gray is the standard unit used to measure how much ionizing radiation (like X-rays or gamma rays) is absorbed by matter or living tissue. It matters because scientists and medical professionals use this measurement to understand radiation exposure levels and assess potential health risks from radiation treatments or accidents.
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Wikidata facts
- Named after
- Louis Harold Gray
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- Wikidata SPARQL query equivalent
- wd:Q190095 p:P2370/psn:P2370 [wikibase:quantityAmount ?source; wikibase:quantityUnit ?base]. ?item p:P2370/psn:P2370 [wikibase:quantityAmount ?target; wikibase:quantityUnit ?base]. BIND(?source / ?target as ?value)
- unit symbol
- Gy
- conversion to SI unit
- 1
- on focus list of Wikimedia project
- Wikipedia:Vital articles/Level/4
- maintained by WikiProject
- WikiProject Mathematics
- derived from base unit
- second
Sources (3)
via Wikidata · CC0
Article · Italiano
Il gray (simbolo Gy) è l'unità di misura della dose assorbita di radiazione del sistema internazionale.Un'esposizione di un gray corrisponde a una radiazione che deposita un joule (definito come 1 kg·m²/s²) per chilogrammo (simbolo: kg) di materia (sia tessuti biologici sia qualsiasi altra cosa). Il gray fu definito nel 1940 da Louis Harold Gray, da cui prende il nome. Il gray ha sostituito la vecchia unità, il rad; vale la relazione 100 rad = 1 Gy. Dimensionalmente si ha: .
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