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Tag: laser

Nasa's IceSat space laser makes height maps of Earth

Nasa's IceSat space laser makes height maps of Earth

Science
One of the most powerful Earth observation tools ever put in orbit is now gathering data about the planet.IceSat-2 was launched just under three months ago to measure the shape of the ice sheets to a precision of 2cm.But the Nasa spacecraft's laser instrument is also now returning a whole raft of other information.It is mapping the height of the land, of rivers, lakes, forests; and in a remarkable demonstration of capability - even the depth of the seafloor."We can see down to 30m in really clear waters," said Lori Magruder, the science team leader on the IceSat mission. "We saw one IceSat track just recently that covers 300km in the Caribbean and you see the ocean floor the entire way," the University of Texas researcher told BB...
ICESat: Space laser to get unprecedented view of Earth's ice

ICESat: Space laser to get unprecedented view of Earth's ice

Science
The American space agency is about to put a laser in orbit to measure the condition of Earth's ice cover. The satellite mission, called ICESat-2, should provide more precise information on how these frozen surfaces are being affected by global warming. Antarctica, Greenland and the ice floating on the Arctic Ocean have all lost volume in recent decades. ICESat-2 will track ongoing change in unprecedented detail from its vantage point some 500km above the planet. A Delta II rocket is booked to take the satellite laser into space on Saturday. Lift-off from the Vandenberg Air Force Base in California is scheduled for 05:46 local time (12:46 GMT; 13:46 BST). As the name suggests, ICESat-2 is a follow-on project. The original spacecra...
Copper nanoparticles, green laser light cost beneficial in circuitry printing

Copper nanoparticles, green laser light cost beneficial in circuitry printing

Science
Sept. 13 (UPI) -- Printing electronic circuitry with copper nanoparticle ink and green laser light can be more cost beneficial and efficient, according to a study. Researchers at Soonchunhyang University in South Korea studied the thin-film printing technique instead of the conventional methods, based on laser power, scanning speed, pre-baking conditions and film thickness effects. Their findings were published this week in the journal AIP Advances. Nanoparticles in metallic inks have an advantage over bulk metals because of their lower melting points in the circuitry manufacturing. Originally the researchers, led by Kye-Si Kwon, tested silver nanoparticle ink but found it is costlier. Then, they studied studied copper, which is derived from copper oxide. Although copper's melting point ...
Rheinmetall tapped for laser light for Bundeswehr assault rifles

Rheinmetall tapped for laser light for Bundeswehr assault rifles

Business
July 6 (UPI) -- Rheinmetall has received a $ 5.9 million contract for laser light packages for the German Bundeswehr's Special Forces Assault Rifle. The order, announced this week by Rheinmetall, will provide 1,745 laser light packages to the Bundeswehr, with deliveries beginning in early 2019. The procurement falls under the Federal Office for Bundeswehr Equipment, Information Technology and In-service Support. The package features a Variable Tactical Aiming Laser which is designed for compactness and to be mounted on shorter assault rifles. The package includes two weapon lights, including a standard dual LED and a special version for hostage rescue operations. The work will be performed by Rheinmetall Soldier Electronics in Stockach, Germany. The Special Forces Assault Rifle is a modi...
New laser sensor could detect explosives, dangerous gases more quickly

New laser sensor could detect explosives, dangerous gases more quickly

Science
Sept. 29 (UPI) -- Scientists have developed a new laser-based spectroscopic method for identifying potentially dangerous gasses. The method, which relies on the combination of two spectroscopic techniques, could be used to more quickly and accurately identify explosives and other dangerous substances.The first technique, called multi-dimensional coherent spectroscopy, relies on short laser pulses. When bounced through a mixture of gases, scientists can measure which wavelengths are absorbed and use their observations to identify the gas molecules."If you have light going through the gas, and, for example, you use a prism to separate white light into colored light, in the rainbow spectrum you'd see there'd be black stripes," Steven Cundiff, a physics professor at the University of Michigan,...