Assertion: planetarium | /r/HasProperty | created
Facets:
value: from first principles
type: MANNER
Source sentences:
text: It displays the planets across the width of a room's ceiling, and has been in operation almost continually since it was created.
text: Beams' planetarium although based on the Zeiss design was developed from first principles to allow Mr Beams to incorporate what he considered to be design improvements on the Zeiss model.