Designable spatially coherent wideband radiation and frequency conversion – BIOENGINEER.ORG

Components of a typical laser include gain medium, laser pumping energy and resonant optical cavity. The output frequency of most lasers is fixed or within a small range, and it is difficult to generate lasers of some frequencies by common ways. Regarding some practical applications, optical frequency conversion technology which can convert the laser into … Read more

Quantum sensor can detect electromagnetic signals of any frequency – BIOENGINEER.ORG

Quantum sensors, which detect the most minute variations in magnetic or electrical fields, have enabled precision measurements in materials science and fundamental physics. But these sensors have only been able to detect a few specific frequencies of these fields, limiting their usefulness. Now, researchers at MIT have developed a method to enable such sensors to … Read more

Hackers can eavesdrop 6G frequency with DIY metasurface

Zhambyl Shaikhanov holds a foil sheet he used to create a “metasurface”. Credit: Jeff Fitlow / Rice University. Crafty hackers can make a tool to eavesdrop on some 6G wireless signals in as little as five minutes using office paper, an inkjet printer, a metallic foil transfer and a laminator. The wireless security hack was … Read more

How Often Should You Feed Your Dog? Giant Study Reveals a Surprising Answer

Every dog ​​is different, and depending on things like their breed, size, age, and health, their particular dietary requirements may also be different, including what you should feed them, and how much. But what about how often? A new study that assessed over 10,000 dogs offers some startling insights into the apparent links between feeding … Read more

Ultraprecise Atomic Optical Clocks Could Help Us Redefine The Length of a Second

The definition of a second, the most fundamental unit of time in our current measurement system, hasn’t been updated in more than 70 years (give or take some billionths of a second). But in the next decade or so, that could change: Ultraprecise atomic optical clocks that rely on visible light are on track to … Read more

Look at This Epic NASA Backpack Designed For Astronauts on The Moon

Human explorers on the Moon may be able to send back unprecedented, finely detailed maps of the lunar surface, thanks to a new backpack device developed by NASA and its partners. It’s called the Kinematic Navigation and Cartography Knapsack (KNaCK for short), and it’s equipped with a portable LIDAR scanner that constantly scans the ground … Read more

Biological timeline of COVID-19 immune recovery described in new research

As of March 21st, 2022, the causative virus of coronavirus disease 2019 (COVID-19), severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has infected over 470 million people worldwide and claimed the lives of over 6 million. Most people infected with SARS-CoV-2 are asymptomatic or show mild flu-like symptoms. In a prospective study of adults with SARS-CoV-2 … Read more

Scientists develop world’s first power-free frequency tuner

Power-free frequency tuner illustration. Credit: Utku Emre Ali. Scientists at the University of Oxford and the University of Pennsylvania have found a power-free and ultra-fast way of frequency tuning using functional nanowires. Think of an orchestra warming up before the performance. The oboe starts to play a perfect A note at a frequency of 440 … Read more

What’s The Deal With 5G And Plane Safety? Here’s What You Need to Know

Several international airlines have recently canceled flights to certain U.S. airports due to concerns that the introduction of 5G mobile communication technology could interfere with the equipment of some aircraft. Following warnings of the potential problem from heads of aviation and the Federal Aviation Administration, telecommunications companies AT&T and Verizon were slow to activate some … Read more