Out of utter darkness had come a single beam, lighting his way.

The forward hatch was closed now except for the gap left by a single beam.

In this design the carriage wheels ride inside the single beam.

Overall power expenditure was no higher than for a single beam.

You should never aim a single beam into the audience.

However, her power was limited to a single beam.

In fact, there were no cones of light except one single, solitary beam.

So there it was, a single beam, and hundreds of paying patrons, waiting.

They stood stiffly, hands high in the glare of the single beam.

A Chinese proverb notes that a single beam cannot support a great house.