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by dnautics
3972 days ago
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12kg * 10 m/s^2 * 1 m = 120j. Best 100 w equivalent led is 18 watts, 120j/18w < 10s. Let's say optimistically a next gen led gets 10x efficiency (this might violate laws of physics), you're buying one minute of good light per 1 m lift. |
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