A conventional compass points north (well, to magnetic north, anyway). [Videoschmideo] wanted to make a compass that pointed somewhere specific. In particular, the compass — a wedding gift — was to ...
The earliest known compasses were made in China’s Han Dynasty, between 300 and 200 BCE. These simple instruments were made from a lodestone—a naturally occurring, magnetically-charged mineral that, ...
On Earth, a compass can be a vital tool. Compasses have provided a constant point of reference for humans for over 800 years, ...