11.   Her arms slice through the candlelight in a circular fashion as if to gather handfuls of light beams.

12.   If a light beam is broken, the computer stops the ride.

13.   Imagine light beams that could spot anthrax spores in a sealed envelope.

14.   In both experiments and computer simulations, it is possible to calculate the complicated paths that light beams take as they bounce among the four silvered balls.

15.   Laser-condensate combinations may also lead to ultrafast optical switching systems useful in computers that would operate using one light beam to control another light beam.

16.   Light beams with short wavelengths have a narrower focus, or point, than those with longer waves.

17.   One existing system, called Cyclops, uses light beams projected along the back of the service box to judge whether serves were in or out.

18.   On stems behind the steering wheel are controls for the trip computer, windshield and headlight washers, cruise controls, wipers, and light beams.

19.   Only the finest computer-controlled micromanipulators are capable of maintaining a perfect match between two or more light beams coming from large telescopes.

20.   Physics professor Xi-Cheng Zhang has found that high-intensity light beams called terahertz waves can be used to sense anthrax spores inside a sealed envelope.