New top story on Hacker News: Gravity-based batteries try to beat their chemical cousins
Gravity-based batteries try to beat their chemical cousins
20 by hheikinh | 11 comments on Hacker News.
20 by hheikinh | 11 comments on Hacker News.
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New top story on Hacker News: Keyboard that shocks you if you type with incorrect technique [video]
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