HackerTube / Video
How close is nuclear fusion power?
Sabine Hossenfelder
Sabine Hossenfelder explains how close nuclear fusion really is to break-even, and why headlines about ITER and lab milestones are misleading. She distinguishes plasma gain (Q plasma) from whole-system gain (Q total) and shows the latter is still far below one.
HN commenters post it under nearly every fusion breakthrough story as the standard reality check on Q-factor hype.
20 Hacker News mentions · 2021–2022