1040-12-01 00:00:00
There are allusions in the manuscript Wu Ching Tsung Yao, written in 1040, to “an iron fish” suspended in water that pointed to the south.
179001
Invention of The Compass
1040-12-01 00:00:00
There are allusions in the manuscript Wu Ching Tsung Yao, written in 1040, to “an iron fish” suspended in water that pointed to the south.
179001