The answer would be a combination of the right filament material and using an evacuated bulb to prevent the filament degrading. But it took over a century to get a commercially successful lightbulb.

We tested the low-beam performance of single-filament (9003) and dual-filament (H7) bulbs from GE, Hella, Philips, and Sylvania, and PIAA's dual-filament bulb. We also compared their performance ...

Plot a graph of voltage, V on the y-axis v current, I, on the x-axis. For a filament bulb, voltage and current are not directly proportional as the graph is not a straight line through the origin.

earning it the title of the longest-burning light bulb in history. Originally a 60-watt carbon filament bulb, the light was Read More ...

The bulb glows because electricity flows through the thin wire inside the bulb called a filament and makes it hot. When the bulb gets old, the wire will eventually break, breaking the circuit and ...

Bright, twisted light can be produced with technology similar to an Edison light bulb, researchers at the ... While a tungsten lightbulb's filament is much warmer than its surroundings, the ...