What kind of phenomenon was observed in nature by the Chinese, that later the first ones invented the compass?

This invention arrived in Europe much later – it was brought by traders who traveled on the Great Silk Road. Initially, they were magnetized needles attached to the base of the cork wood and placed in a bowl with water.

Later, the index was linked to a compbad rose – a digitized digital disk that presented accurate data.

Today, ships and planes use unconventional magnetic compbades and more advanced gyroscopic compbades

Incidentally, the symbolic granite compbad of the center is exposed in the Pamphlet Park of the homeland of Stephen Darius . trees planted in azimuth, representing the main directions of the residential neighborhoods of S. Darius. The compbad is based on the prototype of the old plane compbad Lituanica