Magnesium and Copper Makes an Emergency Flashlight
#3dprinterhacks #battery #copper #flashlight #magnesium #hackaday
posted by pod_feeder_v2
Magnesium And Copper Makes An Emergency Flashlight
Many of us store a flashlight around the house for use in emergency situations. Usually, regular alkaline batteries are fine for this task, as they’ll last a good few years, and you remember …Hackaday
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