👤 PersonShen Kuo1031–1095WikipediaWikipedia (es)Wikidata🌍 View on the globeInventions and discoveries · 3c. 1080Shen Kuo's theory of landform by erosion and sedimentationDiscovery · discoverer1088Magnetic declination described by Shen KuoDiscovery · discovererc. 1100Magnetic navigational compassInvention or technique · inventor