This dimension groups energy technologies by the energy source they actually harness. Wikipedia notes that variable renewable sources include "wind power and solar power," while controllable sources include "dammed hydroelectricity, bioenergy, or geothermal power," each requiring its own distinct technology. Browsing this way collects every technology built around the same source.
Facts
Comparison
Era of Emergence Physical Basis Energy Source Used
Sources
1. Heat engine - Wikipedia
History, industrial revolution practical useQuote, History, industrial revolution practical use
Heat engines have been known since antiquity but were only made into useful devices at the time of the industrial revolution in the 18th century.
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