Cassini's meridian line

GPTKB entity

Statements (18)
Predicate Object
gptkbp:instanceOf meridian line
gptkbp:built 1655
gptkbp:builtBy gptkb:Giovanni_Domenico_Cassini
gptkbp:city gptkb:Bologna
gptkbp:country gptkb:Italy
gptkbp:feature holes in the basilica's wall for sunlight projection
brass strip inlaid in the floor
gptkbp:heritageStatus scientific instrument
https://www.w3.org/2000/01/rdf-schema#label Cassini's meridian line
gptkbp:length 66.8 meters
gptkbp:locatedIn gptkb:Basilica_of_San_Petronio
gptkbp:notableFor longest indoor meridian line
gptkbp:purpose astronomical observations
solar measurements
gptkbp:usedFor determining the solar year
measuring the obliquity of the ecliptic
gptkbp:bfsParent gptkb:Basilica_di_San_Petronio,_Bologna
gptkbp:bfsLayer 6