You Can Power a Calculator With Some LEDs
by Rhett Allain from Feed: All Latest on (#4ATC9)
LEDs generate light, which is why they're in our screens. But if you instead shine a light on an LED, you can generate current to run a small device.LEDs generate light, which is why they're in our screens. But if you instead shine a light on an LED, you can generate current to run a small device.