It turns out that the average light bulb is not designed to be turned on. It’s meant to already be on. The initial stress on the tungsten filament is far higher than the light bulb can handle.

You probably know that an incandescent light bulb uses a tungsten filament. What’s even cooler is that it’s got 20 inches of double-coiled filament — and tungsten is a brittle mineral that ...

Chones / Shutterstock Although tungsten-filament bulbs are the world’s most extensively used light source, they are inefficient and generate more heat than light. However, a new microscopic tungsten ...

On January 1, 2014, in keeping with a law passed by Congress in 2007, the old familiar tungsten-filament 40- and 60-watt incandescent light bulbs can no longer be manufactured in the U.S., because ...