7 Days
Source:
وكالة الأنباء القطرية
British scientists create salt-based electricity generator
British scientists have succeeded in developing an electric generator that relies on table salt and surrounding humidity to produce sustainable energy. It can generate direct current for over 30 days, with enough voltage to power 40 lamps. This invention is an environmentally friendly alternative to traditional batteries and can be used to monitor breathing and speech patterns, contributing to the improvement of wearable health devices and human-machine interaction interfaces.
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