Assertion: beryllium | /r/ObjectUse | used in window
Facets:
value: according to jefferson lab
type: OTHER
value: for x-ray tubes
type: PURPOSE
Source sentences:
text: Beryllium is highly transparent to X-rays and is therefore used in windows for X-ray tubes, according to Jefferson Lab.
text: For example, beryllium is used in filters and windows for radiation and particle physics experiments because of its relatively high transparency to X-rays.