Just as transistors replaced vacuum tubes a generation ago, another solid-state device – the LED – is replacing other electric components in glass containers – incandescent and fluorescent lamps. LEDs ...

When you're shopping for light bulbs, you might feel like they're all the same, regardless of the brand. After all, incandescent light bulbs haven't changed much since Thomas Edison patented them more ...

We are to modulate different frequencies on different types of LEDs from a fixed distance. We then sense and demodulate the frequencies to determine the color. The product should work in ambient light ...