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Economic Watch: Relief policies for SMEs amid COVID-19 welcomed in China
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TanSat Observes and Reports Global Net Carbon Emissions
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China s carbon-monitoring satellite reports global carbon net of six gigatons
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Why the U.S. Army Loves Lasers (And No, Not To Shoot At People)
Lasers could transmit sensitive data across multiple nodes at the speed of light, exponentially faster and potentially more secure than radio frequency communications.
Lasers can already incinerate drones, destroy enemy aircraft and possibly even melt incoming anti-ship missiles, but the Army Research Office is fast progressing with new research enabling lasers to transmit data at the speed of light.
While early on, it is potentially a huge breakthrough, as promising new experiments are showing that laser communications can instantly network robots, drones, sensors, weapons and platforms. The work, now being done by the University of Pennsylvania and Duke University, is based upon the science of Photonics, which an Army Research Office essay says “has the potential to transform all manners of electronic devices by storing and transmitting information in the form of light, rather than electricity.”
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IMAGE: Ring microlasers are eyed as potential light sources for photonic applications, but they first must be made more powerful. Combining multiple microlasers into an array solves only half of the. view more
Credit: University of Pennsylvania
The field of photonics aims to transform all manner of electronic devices by storing and transmitting information in the form of light, rather than electricity. Beyond light s raw speed, the way that information can be layered in its various physical properties makes devices like photonic computers and communication systems tantalizing prospects.
Before such devices can go from theory to reality, however, engineers must find ways of making their light sources lasers smaller, stronger and more stable. Robots and autonomous vehicles that use LiDAR for optical sensing and ranging, manufacturing and material processing techniques that use lasers, and many other applications are also continually pushing the field of phot