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For a second or so after he snapped it nothing happened, and then the darkness was broken by the flickering of fluorescent tubes. When they finally lit, he saw the shape on the floor, arms outflung, the inverted rifle above it. For a seemingly long time he stood and stared at the grotesquely transfixed body of Arnold Rivers.

He snapped closed his jacket and flipped the switch controlling the archaic fluorescent panels. "Besides, you can always stay here if you want to, you know." "Never mind," Rat said. "I'm coming." He leaped up and anchored himself securely on Alan's shoulder. Kevin Quantrell was waiting for them in front of the building. As Alan emerged Rat said, "One question, Alan." "Shoot."

President Morton has prepared for me a most beautiful example of such a design which, when placed in the violet light, exhibits a peculiarly brilliant fluorescence. From the experiments of Drs. Bence Jones and Dupré, it would seem that there is some substance in the human body resembling the sulphate of quinine, which causes all the tissues of the body to be more or less fluorescent.

At first he meant to determine the speed of the cathode rays by direct experiment, and by observing, in a revolving mirror, the relative displacement of two bands due to the excitement of two fluorescent screens placed at different distances from the cathode.

But the whole German race seemed to be flowing in on the British, and they fairly got into the trenches, though they were twice driven out. Yard by yard the battalion retired. The next moment an unearthly, fluorescent light shot and flooded along the trenches. The troops gasped for a moment, and then started back.

In observations made at the Riffel, and at 14,000 feet, I have found that it is possible to see far into the ultra-violet, and to distinguish and measure lines in the sun's spectrum which can ordinarily only be seen by the aid of a fluorescent eye piece or by means of photography.

Five hundred feet below was the pit's floor. Gone were the clouds of light that had obscured it the night before; the air crystal clear; every detail standing out with stereoscopic sharpness. First the eyes rested upon a broad band of fluorescent amethyst, ringing the entire rocky wall.

He had made his examinations of this substance, since, like several others, it was known to exhibit strong fluorescent or phosphorescent effects when exposed to the cathode rays, which are known to be closely connected with the X-rays.

A shout went up: "Harmless!" It was not that. But our building withstood it better than I had feared. It was a flash from a large electronic projector mounted on the deck of the brigand ship. It stabbed up from the shadows across the valley at the foot of the opposite crater wall, a beam of vaguely fluorescent light. Simultaneously the searchlight vanished.

In Europe, especially, a number of scientists have written on the subject of the aura, and have described the result of the experiments in which the aura has been perceived, and even photographed, by means of fluorescent screens, such as are used in taking X-Ray photographs, etc.