Paper and string: the DIY centrifuge
Why the open web links it
Demonstrates a low-cost, hand-spun centrifuge made from paper and string for use in resource-limited settings.
Linked by 5 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including listverse.com, snexplores.org, natureasia.com, technologyreview.jp, kuark.org.