Rivers were used to turn watermills and the Romans even used geothermal water for heating. Until the middle of the 18th century renewable sources of energy were the only forms of energy available, but then, with the advent of the Industrial Revolution, fossil fuels began to be exploited.
The Sidereal Zodiac is the position of the sun referenced against the star background, as a measure of the flow of time. The framework for the star background is the constellations the sun passes in front of. This is the one astronomers use.
The foundational framework for the Art of Wayfinding is the sidereal Star Compass. The star compass is a mental construct and not physical like a western compass. The visual horizon is divided into 32 houses, a house being a bearing on the horizon where a celestial body resides. Each of the 32 houses is separated by 11.25Ë of arc for a complete circle of 360Ë. Read More.