The obvious answer to the old “feathers or lead?” riddle is that they weigh the same, but clever research on the subject offers a more complicated view. Don’t count out so-called “dynamical symmetry.”
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Maker Business — The Essential Guide to Electronics in Shenzhen
Wearables — Lithium Batteries: a soft touch goes a long way
Electronics — Capacitor Polarity Markers
Biohacking — Can Gizmos Cure Insomnia? – The New Yorker
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