Assertion: californium's number | /r/HasProperty | dermined by characteristic x-rays
Facets:
value: in the physics laboratories
type: LOCATION
Source sentences:
text: In the physics laboratories, the atomic numbers of these elements could be dermined by the characteristic X-rays that they produced when bombarded with energetic electrons - using the methods invented by Henry Gwyn Jeffreys Moseley in England over 30 years earlier.