Gnomon (sundial)

GPTKB entity

Statements (45)
Predicate Object
gptkbp:instanceOf scientific instrument
sundial component
gptkbp:angle depends on latitude
gptkbp:category scientific instrument
timekeeping device
gptkbp:component gptkb:castle
gptkbp:directionA aligned with Earth's rotational axis
gptkbp:etymology Greek: gnomon, meaning 'indicator' or 'one who knows'
gptkbp:foundIn gardens
observatories
public squares
https://www.w3.org/2000/01/rdf-schema#label Gnomon (sundial)
gptkbp:length_of_shadow varies with season
varies with time
gptkbp:material gptkb:stone
metal
wood
gptkbp:notableExample gptkb:Gnomon_of_Augustus
gptkb:Gnomon_of_Saint-Sulpice
gptkbp:notableProject shadow
gptkbp:relatedTo analemmatic sundial
equatorial sundial
obelisks
shadow clocks
gptkbp:requires sunlight
gptkbp:shadow_indicates time of day
gptkbp:shape gptkb:silk
rod
triangular plate
gptkbp:used_in gptkb:Babylon
gptkb:China
gptkb:India
gptkb:ancient_Greece
gptkb:ancient_Egypt
gptkb:ancient_Rome
Islamic astronomy
gptkbp:usedFor measuring time
measuring latitude
determining equinoxes
determining solar position
determining solstices
measuring altitude of the sun
gptkbp:usedUntil ancient times
gptkbp:bfsParent gptkb:Vatican_Obelisk
gptkbp:bfsLayer 6