Statements (13)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
geographical line
|
| gptkbp:changesOverTime |
true
|
| gptkbp:crosses |
gptkb:Earth
|
| gptkbp:defines |
an imaginary line on the Earth's surface where the magnetic declination is zero
|
| gptkbp:firstDescribed |
gptkb:Edmund_Halley
18th century |
| https://www.w3.org/2000/01/rdf-schema#label |
agonic line
|
| gptkbp:opposedBy |
isogonic line
|
| gptkbp:relatedTo |
magnetic declination
isogonic line |
| gptkbp:usedIn |
gptkb:navigation
|
| gptkbp:bfsParent |
gptkb:Magnetic_declination
|
| gptkbp:bfsLayer |
7
|