Sabine Hossenfelder on a fusion energy milestone (plus . . .)
2.5 MJ in, 3.15 MJ out . . . not counting the inefficiency of lasers: Counting 400 MJ to get the 2.5 MJ from the lasers, that is not yet “there” but it is a step. Here is another recent attempt, based on firing two plasma “donuts” at each other: The Helion people explain the challenge involved, here. Let us watch as we inch towards a fusion world. END