The only light came from a small incandescent red bulb on one wall.

Most of the energy that goes into an incandescent bulb is lost as heat.

Its present purpose was to hold the single incandescent bulb that provided the room with light.

These were important developments in the history of the incandescent light bulb.

The normal incandescent bulbs we're all used to are not very energy efficient.

The first type introduced had the shape of an incandescent light bulb.

And their light can be focused more precisely than that of incandescent bulbs.

Other technologies were explored for the first time, including the incandescent light bulb.

The same goes for those corny old incandescent light bulbs.

But he wasn't ready to predict the demise of the incandescent bulb.