Word: beams
(lookup in dictionary)
(lookup stats)
Dates: all
Sort By: most recent first
(reverse)
...most important contributions from the Vega program will be what is called the Pathfinder concept. Together the probes will attempt to reckon the position and orbit of Halley's nucleus with a precision impossible from ground-based observations and then beam the data back to the Soviet Union, which will in turn relay the information to European mission control in Darmstadt, West Germany, in time for Giotto's rendezvous on March 13. Precision is of the essence: zeroing in on a nucleus that scientists estimate measures only two to six miles in diameter and is traveling some 154,000 m.p.h...
Plaques are made up largely of fat, so they tend to absorb different colors of light than the protein-rich blood vessel tissue. By using a special laser beam that reacts especially well with the plaques and not with the surrounding tissue, the doctors have had unusual success in destroying fat deposits...
Karle and Hauptman's work was an advance in the field of X-ray crystallography, which has been employed since 1912 to examine the architecture of substances that have been crystallized. An X-ray beam is aimed at a crystal. As the beam travels through it, the crystal's atoms diffract, or scatter, the rays, producing fuzzy spots of varying intensity on film. The resulting diffraction pattern looks something like strings of beads. Although each type of crystal creates a distinctive design, the patterns are extremely intricate and were once very difficult to interpret. To get beyond the primitive...
...burst of violence that would seem incredible were | it not for Keene's matter-of-fact transcriptions of what he has seen or heard. He and a scouting party find three friends massacred: "Martha's breasts were skinned. They are made by Indians into bullet pouches, says Beam." That juxtaposition of horror and information perfectly captures the genius of this imaginary diary. For Nissenson has created an apparently loose, formless work that is poetic in its artful selectivity. Scarcely a word is wasted. Hardly an aspect of the struggle to found a new civilization remains untouched. The Tree of Life...
...file. Before computers, these patterns were classified into eight categories of arches, loops and whorls. To speed up the search, the FBI's system concentrates on simpler patterns: the so-called points of minutiae, where a ridge line ends or a single ridge splits into two. A thin beam of light scans each print and records the location of up to 100 minutiae. The computer then converts these data into numbers that can be stored on magnetic disks and retrieved for comparison with prints taken from the scene of a crime...