Tag: artificial light

The Cost of Artificial Light – 1750 BCE to Present

Jan 21, 2011

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by

mwkruse

in Economic Development, History, Technology (Manufacturing & Construction)), Trends: Economic

These two charts were created from data presented in Matt Ridley's The Rational Optimist. Note that both graphs are using a logarithmic scale. The second chart says the time worked to earn one hour of light fell from 50 hours to half of a second.