Use only the number of bulbs needed to light an area.

He saw the box of light bulbs; four in all.

Add water to just below the base of the bulbs.

"And when was the last time you took out that box of bulbs?"

The design life of the bulb is approximately 60,000 hours.

It is also used in some kinds of light bulbs.

I went to the right toward the light of distant bulbs.

For example, on one day 15 percent of the light bulbs were burned out.

At the same time, one of the bulbs lit Up.

Put them close to one another, with the bottom third of the bulb in soil.