Guessanym

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civilization

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Keyword:   four
Context:   A Type I civilization is usually defined as one that can harness all the energy that reaches its home planet from its parent star (for Earth, this value is about 2×1017 watts), which is about four orders of magnitude higher than the amount currently achieved on Earth, with an energy consumption of ≈2×1013 watts by 2020.
Full context:   A civilization "close to the level currently achieved on Earth, with an energy consumption of ≈4×1019 erg/sec" (4×1012 watts). A Type I civilization is usually defined as one that can harness all the energy that reaches its home planet from its parent star (for Earth, this value is about 2×1017 watts), which is about four orders of magnitude higher than the amount currently achieved on Earth, with an energy consumption of ≈2×1013 watts by 2020. The astronomer Guillermo A. Lemarchand defined Type I as a level close to today's terrestrial civilization, with an energy capacity equivalent to Earth's solar irradiance, between 1016 and 1017 watts.
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civilization

Source
Nikolai Kardashev
Area
Astronomy
Mode
step
Depth
3
User
scotty
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