What’s the smallest RGB LED cube? A 1x1x1 cube is easy, but it’s a stupid joke and we’ve heard it before. No, to build the smallest LED cube, you’ll have to stuff 64 RGB LEDs into a cubic ...

Researchers have used the wonder material known as graphene to create the world’s smallest light bulb. WSJ’s Gautam Naik reports. Photo: Columbia University ...

What does it mean? Even the smallest LED bulbs such as for LCD backlight would have current above 10mA, typically 15 or 20mA. Does figures above make sense for any practical product, or simply are ...