An engineering start-up called SALt has invented a lamp that burns for eight hours at a time, running on nothing but a glass of water and two teaspoons of salt.The idea was conceived by engineer and Greenpeace volunteer, Aisa Mijeno who felt that there could be safer and more efficient ways of generating light, and something that the archipelago of the Philippines had in abundance – saltwater.
Named as the SALt (Sustainable Alternative Lighting) lamp, the device will also be able to generate enough energy to charge a smartphone via the USB port, while also lighting up the room.It works with a galvanic cell battery, which consists of an electrolyte solution – the salt and water – and two electrodes. When the electrodes are placed in the electrolyte, the energy generated kicks an LED light into gear. According to the developers, the battery will work for eight hours a day for six months, which is a considerable upgrade from the constant refills required by paraffin lantern.
As it stands the device is still in its prototype phase and the team envisions that the final product will even have a USB port to help power smartphones as well.
This is GENIUS!
Naturally the electrodes won’t last forever, but it has been estimated that the lamp can be used for eight hours a day for around six months before the anodes require changing. About 600 of these lamps are expected to make their way to native Filipino tribes and production will be ramped up in early 2016.
The lamp was invented in response to the fact that, right now, there are about 1 billion people in the world who are living without electricity. This means if they want to get anything done after dark, whether it’s walking home from school or work, or doing homework, reading, or cooking at night, they have to light their way with dangerous and expensive kerosene lamps.