1.   They learned to organize promotional efforts, to make check-off lists, and to utilize telephones, slide projectors, and tapes.

2.   The board is a complex series of slide projectors and lights.

3.   A slide projector underneath flashes the advertising up onto the panel, which acts much like a movie screen.

4.   For a dramatic minute the room remained dark until he clicked on a slide projector.

5.   For instance, in one spot, police use an overhead slide projector to make a presentation to persuade robbers cornered inside a bank to surrender.

6.   He lugged around slide projectors and huge stereo sets, and gave them a behind-the-scenes glimpse into the filmmaking process.

7.   He invented the first slide projector and had himself lowered into the mouth of Mount Vesuvius just as it was supposed to erupt.

8.   Her slide projector is purring, and an old sheet is draped across the television, our makeshift screen.

9.   Nor have personal computers had much success at liberating people from the slide projector.