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Comment by sillysaurusx

This tweet claims that 500MJ of energy was required: https://twitter.com/latzenpratz/status/1602686252486217728

> "had to put 500 megajoules of energy into the lasers to then send 1.8 megajoules to the target - so even though they got 2.5 megajoules out, that's still far less than the energy they originally needed for the lasers," says Tony Roulstone of the University of Cambridge.

But it's good to finally see progress. Very few technologies can transform the world the way a practical fusion reactor could.

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