Such lamps provide the greatest amount of photopic illumination for the least consumption of electricity.

These lamps provide a clean source of light at a cost that is much lower in the long run.

A few carefully placed lamps will provide atmosphere and show off the surrounding plants.

The result is that one lamp can provide a very soft, diffuse glow or quickly adjusted to illuminate an entire room, and everything in between.

Halogen lamps provide this light at over 50W power consumption.

A fluorescent lamp provides more light than most incandescents of the same power.

She saw the filigree-cut brass urns from which perfumed lamps provided light and warmth.

The occasional lamps by the walking paths provided little oases of light, but there were many impenetrable shadows.

Scattered glow lamps provided a somber twilight that tinted the moist air brown.

The lamp also provided a test for the presence of gases.