Which lamp lights up from water?
Autonomous LED lamp with battery runs on water up to 25 hours without recharging An innovative energy-saving light bulb is presented, which lights up when you put its base in a glass of water.
How to make light without light?
In the event of a power outage, a variety of tourist lanterns, such as lantern lamps, camping lanterns, solar-powered hand torches, dynamo torches, head torches, will come in handy.
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