Assertion: gamma ray's source | /r/ObjectUse | used as gamma-ray sources
Facets:
value: for industrial radiography
type: PURPOSE
value: many years ago
type: TEMPORAL
Source sentences:
text: Many years ago radium-226 and radon-222 sources were used as gamma-ray sources for industrial radiography: for instance a radon-222 source was used to examine the mechanisms inside an unexploded V-1 flying bomb, while some of the early Bathyspheres could be examined using radium-226 to check for cracks.
text: Many years ago radium-226 and radon-222 sources were used as gamma-ray sources for industrial radiography: for instance a radon-222 source was used to examine the mechanisms inside an unexploded V-1 flying bomb, while some of the early Bathyspheres could be examined using radium-226 to check for cracks.