this post was submitted on 09 Oct 2024
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Scientists Simulate Alien Civilizations, Find They Keep Dying From Climate Change (futurism.com)
submitted 3 months ago by [email protected] to c/[email protected]
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[โ€“] [email protected] -4 points 3 months ago (1 children)

Nothing in the universe has an efficiency over 100%.

[โ€“] [email protected] 6 points 3 months ago* (last edited 3 months ago)

Depends how you define it. Heat exchangers do, because it's defined for them in terms of heat moved per heat generated. All conservation laws are still respected.