Statements (16)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:Metric
|
| gptkbp:category |
radiation units
|
| gptkbp:definedIn |
gptkb:CGS_system
|
| gptkbp:defines |
amount of X-rays or gamma rays required to produce ions carrying 1 electrostatic unit of charge in 1 cm³ of dry air
|
| gptkbp:deprecatedIn |
1975
|
| https://www.w3.org/2000/01/rdf-schema#label |
roentgen
|
| gptkbp:introducedIn |
1928
|
| gptkbp:measures |
exposure to ionizing radiation
|
| gptkbp:namedAfter |
gptkb:Wilhelm_Röntgen
|
| gptkbp:replacedBy |
coulomb per kilogram
|
| gptkbp:SI_status |
non-SI unit
|
| gptkbp:symbol |
R
|
| gptkbp:usedFor |
measuring X-ray and gamma ray exposure
|
| gptkbp:usedIn |
radiology
|
| gptkbp:bfsParent |
gptkb:X-Ray
|
| gptkbp:bfsLayer |
6
|