1833
ID: 443
Gauss studies linking of closed curves, founding mathematical knot theory
ID: 443
1833
ID: 797
Gauss and Weber develop mathematical theory of terrestrial magnetism - map Earth's magnetic field
ID: 797
1833
ID: 4215
Dragon sighted in Madagascar - French naturalist Sganzin reports dragon-like creature in forest, local name 'Reatolitre'
ID: 4215