21.   Researchers here are experimenting with high-intensity light beams that can be used to sense anthrax spores inside a sealed envelope.

22.   Scientists believe that not even light beams can escape once they are inside.

23.   She teases it, manipulates it and commands it at will to do things that no self-respecting light beam would ever do on its own.

24.   She teases it, coaxes it, manipulates it and commands it at will to do things that no self-respecting light beam would ever do on its own.

25.   Shoppers can don a body suit and enter a dark booth, where light beams are projected on them.

26.   Smoke puffs from a stone chimney, and light beams down from heaven.

27.   Some roller coasters have the additional protection of infrared light beams that give an alarm when there is someone or something blocking the track.

28.   The key to the new method is the use of a device that shines dozens of narrow light beams into the eye.

29.   The light beam could be a sculpture.

30.   The precision of such light beams is why lasers can read grocery bar codes so fast, or decode music on a compact disk.