51.   Proving once again it is skilled at producing negative images.

52.   Quirky and expensive, they eventually lost ground to cheaper concave competitors that produced better images.

53.   Scientists said radar, which can produce images through cloud cover and at night, could be useful in detecting illegal dumping, much of which happens at night.

54.   She photographed nighttime Paris, using available light and producing images that were studies of light and deep shadow.

55.   Smaller than the face of a business card, the clip-on camera produces images with TV-like resolution.

56.   Some researchers theorize that the brain produces spontaneous images, which are usually suppressed by normal visual input from the eyes.

57.   Susan Derges photographed jets of water using stroboscopic lights and sound waves, producing images that look like necklaces of water drops.

58.   Suspect ID is a full-color program that is designed to produce photo-realistic images based on a description by a witness.

59.   That describes the best photojournalists, who have braved wars, violence and their own frailties to produce the images like those on these pages.

60.   That produces images on the computer, which are then transformed into a film that must be viewed with the glasses to produce the effect.