There's a light that never goes out… well, almost never. Since the invention of commercial light bulbs in the late 19th century, one bulb has outshone all others. In 2025, it could enter its 124th ...

But don't go digging out your hundred-year-old light bulbs from the closet just yet, there's still more work to be done. Source: University of Michigan View gallery - 3 images ...

One quirk of smart bulbs is that the light switch they’re attached to must stay on at all times, even when the bulb is off. Without power, it’s unable to receive instructions to turn it back on.