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Updated: June 15, 2025
The sun would evaporate two inches a year, but that was too slow. So they used the old force of the sun, reservoired in former ages. Coal is condensed sunshine, still keeping all the old light and power. By a suitable engine they lifted 112 tons ten feet at every stroke, and in 1848, five years after they began to apply old sun force, 41,675 acres were ready for sale and culture.
On the earth its power long ages ago was turned into coal. The power was reservoired in mountains ready for man. It is so great that a piece of coal that weighs the same as a silver dollar carries a ton's weight a mile at sea. But what is the thousand million times more light than ever struck the earth doing in space? That is among the things we want to find out when we get there.
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