Because CFLs use less energy than ... Incandescent bulbs produce light by generating heat. Electricity is forced through a thin wire called a filament, which heats up and glows brightly.

The filament is enclosed in halogen gas ... lamp is the original alternative to an incandescent bulb, using between 60 and 80 per cent less energy. It works by using an electric current to excite ...

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 ...

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 ...