There are plenty of radios you can buy that pick up MW and SW bands if that’s what you’re into. Or, you can follow [mircemk]’s example, and whip one up yourself instead. The build employs an ESP32 as ...
A team of Bangladeshi researchers have found a way to transform agricultural waste into environment-friendly printing ink, which could reduce Bangladesh’s dependence on imported industrial materials.
Abstract: In this letter, we develop a sustainable water-based conductive ink using coal-derived reduced graphene oxide (C-rGO) stabilized with sodium carboxymethyl cellulose. This ink exhibits high ...
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