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Article says 4g title says 9mg
by GenerocUsername 2y ago
Article says 4g title says 9mg
- Jtsummers 2y ago> However, the design can be miniaturized, and the researchers built a version that weighs only 9 milligrams. Ars A/B tests their titles so I don't know if the submitter editorialized or if they saw a different title than the rest of us, but the text of the article does include building a 9 mg version.
- GenerocUsername 2y agoInteresting. Thanks for clarification
- crgvvfz 2y agoA/B test or not, 9mg is impossible. That would be half the mass on a grain of salt. At those length scales the interesting forces at play are not fluid mechanics, but capillary forces and surface tension. It also trivially easy to make - just rip a piece of gold foil weighing 9mg
- dTal 2y agoA mosquito weighs 2.5 milligrams. It also has almost exactly the same hovering power to weight ratio. At 8mm high it is indeed a very tiny "drone", and exceedingly fragile, but it is certainly not impossible.
- commodoreboxer 2y agoThe second and penultimate paragraphs both explain that.