Why is 100% efficiency unobtainable?

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I know every conversion of energy has loss, whether its heat, light, noise, etc. But why is there no way to combat it?

In: Physics

7 Answers

Anonymous 0 Comments

Not sure if this is the answer you’re looking for, but nuclear fusion reactors theoretically can have an efficiency of larger than 100%.

ITER, a fusion reactor being built right now, is designed to have a 500 MW output at a 50MW input. Construction will be completed in 5 years and the first operational tests will start in 2035, so it will take a while to confirm its possibilities. But at least on paper it should be possible.

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