Ceramic springs have been around as scientific novelty items since the 1970s, produced by a special processing technology. An early example, made at Imperial Chemical Industries (ICI) in the UK in the ...
Coherers were devices used in some of the very earliest radio experiments in the 19th century. Consisting of a tube filled with metal filings with an electrode at each end, the coherer would begin to ...
Engineers at Duke University have devised a system for manipulating particles approaching the miniscule 2.5 nanometer diameter of DNA using sound-induced electric fields. Dubbed "acoustoelectronic ...
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