[VIDEO] Gravity-Powered Device Brings Light to Regions Without Electricity
[VIDEO] Gravity-Powered Device Brings Light to Regions Without Electricity
GravityLight relies on a 26.5 pound weight attached to a bead string…
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#future = #REALnews #tech #innovation #design #sustainability #science #engineering #singularity #progress
https://futurism.com/videos/gravity-powered-device-brings-light-regions-without-electricity/
great device