Word: spectrographic
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...optical astronomers turned to one of their most powerful tools: the spectrograph, which separates light into its component wave lengths by passing it through a prism or a series of fine lines etched on a glass plate. The spectrum of colors that results can be photographed and interpreted by scientists to reveal the secrets of the light's source...
Most of the equipment actually exceeded expectations. Cousteau's prototype breathing apparatus, which recycles a helium-based artificial atmosphere supplied from the sphere, en abled divers to work outside the cap sule without any time limit. Inside, a miniaturized mass spectrograph, especially adapted for the experiment, monitored composition of the atmosphere, transmitting the results both to the oceanauts and to the surface so that any dangerous variations would be immediately detected...
...PRINTS may solve the now virtually impossible task of catching obscene, threatening and anonymous phone callers. Variations in size and shape of vocal cavities give each human voice a unique sound, explains Bell Telephone Labs' Dr. Lawrence G. Kersta, who developed the technique. By means of a sound spectrograph, Kersta converts spoken words into picture patterns that he says identify the speaker as reliably as his fingerprints. The system works no matter how the voice is disguised. At this stage, voice prints require wiretapping, which may pose legal problems, but someday police may record every suspect's voice...
...back and focused by a concave mirror. Bounced back toward the top of the shaft, the light is intercepted at ground level by another mirror and angled into a vertical well. There the sun's image can be examined on a flat screen, photographed, or studied with a spectrograph...
With the aid of their spectrograph, the solar scientists will be able to analyze small segments of the sun's light, satisfy themselves as to just what elements are burning with such fierce brilliance. Hopefully, such analyses will give them new insights into the violent physical changes that take place in sunspots and perhaps even in the deep core of the sun itself...