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(38,301 articles)
Popular News
Micromirrors Improve Detectors
DALLAS -- DALLAS -- Researchers at Southern Methodist University have proposed a design for better infrared detectors. The micromachined devices promise to measure the actual temperature of ...
Laser Enables Precision Arc Welding
COLUMBUS, Ohio -- COLUMBUS, Ohio -- Welding is big business. Approximately $2 billion and $600 million are spent annually on arc welding and laser welding equipment, respectively. Now researchers at...
Explaining Why Oil and Water Don’t Mix
EUGENE, Ore. -- EUGENE, Ore. -- It’s a principle most seventh-graders know: Oil and water don’t mix. Of course, there is more to the story. They do interact at some level; for example, oil spreads...
Plastic Fiber Detects Methanol
KOFU, Japan -- KOFU, Japan -- Methanol is a promising energy source for fuel cells. But while the primary product of a methanol fuel cell is warm water, a leaky cell can pose a hazard because the...
Fluorescent Molecules Detect Metals
Sep 1, 2001 — A research team at Brigham Young University in Provo, Utah, has synthesized a molecular sensor that reveals the presence of zinc in water. The work, which appeared in the July 13 i...
Deformable Mirror Tests Adaptive Optics
CHARLOTTE, N.C. -- CHARLOTTE, N.C. -- The advent of adaptive optics systems, which correct for the aberration caused by atmospheric turbulence, has dramatically improved the resolution of ground-base...
Laser Uncovers Cracks in Lumber
JOENSUU, Finland -- JOENSUU, Finland -- When wood is dried, its surface layer sometimes shrinks, causing internal stresses that can develop into tiny cracks. And these cracks, invisible to the naked e...
CO2 Best for New Interior Panels
VIGO, Spain -- VIGO, Spain -- Automobile manufacturers constantly seek to improve their product’s marketability, performance and profitability. One innovation is the replacement of standard inter...
Doubled Diode Offers Blue Output
ST. ANDREWS, UK -- ST. ANDREWS, UK -- Research on semiconductor lasers in recent years has focused on making them small and making them blue. Compact blue lasers can provide diffraction-limited spots...
Image Processing Aids Art Restoration
SANTA BARBARA, Calif. -- SANTA BARBARA, Calif. -- On Sept. 26, 1997, a magnitude 6.0 earthquake in the Umbrian and Marches provinces of central Italy brought the Cimabue and Giotto frescoes in the Basilica...
Ultrasound Probes Laser Damage
LIVERMORE, Calif. -- LIVERMORE, Calif. -- Researchers at Lawrence Livermore National Laboratory are developing an ultrasound method to assess laser-induced damage to the vacuum optics in high-peak-flue...
Compound-Cavity Diodes Promise T-Rays
GLASGOW, UK -- GLASGOW, UK -- The last few decades have been marked by the rapid opening of the high-frequency electromagnetic spectrum for communications, detection and imaging. Remarkably quiet...
Simplicity Eases Image Retrieval
UNIVERSITY PARK, Pa. -- UNIVERSITY PARK, Pa. -- A picture is worth a thousand words, but computerized searches for a digital image involve only a few because they examine only the key words or description...
Silicon Structures Offer Tunable Bandgap
UNIVERSITY PARK, Pa. -- UNIVERSITY PARK, Pa. -- Tunable photonic bandgap materials show promise as light-modulation devices for telecommunications, display and data storage applications, but existing solu...
Another Setback for Solar Sail
Sep 1, 2001 — First an explosion postponed the test of the Cosmos 1 solar sail (see June issue, page 51). Then the rescheduled flight was delayed by the salvage effort for the ill-fated Kursk su...
RoboCup Comes to the US
Sep 1, 2001 — Teams from around the world participated in the fifth annual RoboCup competition in Seattle, the first time the event has been held in the US. Four classes of robots, including mod...
Retinal Chip Study Continues
Sep 1, 2001 — As part of the second round of clinical trials authorized by the Food and Drug Administration, surgeons have implanted microscopic chips in the eyes of three patients suffering fro...
Microspheres Identify Odors
MEDFORD, Mass. -- MEDFORD, Mass. -- For anyone who has trouble telling when the milk has gone bad, help may be on the way, thanks to an artificial nose that is under development at Tufts University ...
Light Obscures the Night Worldwide
Sep 1, 2001 — Light pollution is a global problem, according to the results of a study conducted by researchers from the National Oceanic and Atmospheric Administration’s National Geophysical Da...
Nanowires Produce Laser Light
Sep 1, 2001 — Researchers at the University of California and Lawrence Berkeley National Laboratory in Berkeley, Calif., have developed a 385-nm laser based on nanowires of zinc oxide. If the op...
Space Missions Look to Light
PASADENA, Calif. -- PASADENA, Calif. -- To maximize the amount of data returned by space missions such as the Cassini-Huygens mission to Saturn’s moon Titan, compression techniques are used to reduce ...
Mirror Deemed Playground Hazard
Sep 1, 2001 — Accidents on the playground typically involve hard surfaces, lead paint and sharp edges. A plastic dome from Kompan Inc. of Olympia, Wash., a subsidiary of Kompan A/S of Ringe, Den...
Antimissile Makes Its Mark
Sep 1, 2001 — The second system-level integrated flight test of the US Ground-based Midcourse Defense Segment (formerly National Missile Defense) program’s kinetic antimissile system came off wi...
Light Is Key to Quantum Computing
SANTA BARBARA, Calif. -- SANTA BARBARA, Calif. -- Researchers at the University of California and Pennsylvania State University in University Park have discovered that taking a light touch may be the right...
Air Force Satellite Launched
Sep 1, 2001 — The US Air Force has launched the 21st Defense Support Program reconnaissance satellite aboard a Titan IV rocket. The satellites, which were first put into service in the early 197...
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July 2024
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