Researchers at NIST’s Physical Measurement Laboratory have created a new, highly-efficient single-photon avalanche diode (SPAD) that is able to detect millions of photons per second while limiting noise. SPADs are detectors able to amplify the effect of one photon into a signal large enough to quantify and measure, amplifying miniscule electrical “hits” into an exponential … [Read more...]
British Researchers to Study Effects of Cell Phones on Teen Brain Development
Scientists in the UK are conducting the largest study to date on the effects of cell phone usage on adolescent and teenage brain development. The study, called SCAMP (Study of Cognition, Adolescents and Mobile Phones), will follow a group of 2,500-3,000 students in the greater London area, charting changes in brain development from Grade 7 to Grade 9. SCAMP’s mission, stated … [Read more...]
Dead Spacecraft Gives Insight into ‘Bermuda Triangle of Space’
A decade-old European satellite has given Italian scientists a detailed look into a dangerous radiation zone located a few hundred kilometers above the coast of Brazil. Known as the South Atlantic Anomaly (SAA), or “Bermuda Triangle of Space,” the region has reportedly caused satellites and telescopes to malfunction and temporarily affected astronauts’ eyesight. According to … [Read more...]
Algorithm Fixes Distorted Weather Radar Images
A new algorithm from researchers in Austria offers a fix for weather radar images distorted by Wi-Fi, reports the MIT Technology Review. Weather radar, also known as weather surveillance radar is a type of radar first developed shortly after World War II to detect precipitation, In the half-century that followed, weather radar has developed greatly and now contributes to … [Read more...]
New Magnetic Material Could Boost Hard Drives, Protect Electrical Grids
Scientists at the University of California, San Diego have developed a highly sensitive magnetic material they say could drastically change computer hard drives and electrical grids. Made of thin layers of nickel and vanadium oxide, the material is extremely responsive to heat and requires only a small shift in temperature to alter its magnetic properties. "We can control the … [Read more...]
Man-Made Electromagnetic Noise Disrupts Bird Navigation
Scientists have known for decades that migratory birds orient themselves using the Earth’s magnetic field in order to fly in the right direction. Now, German researchers have documented for the first time that man-made electromagnetic radiation interferes with these birds' internal compasses. The phenomenon was discovered by Henrik Mouritsen, a professor of neurosensory … [Read more...]
Study Finds No Danger from Magnetic Fields in Electric Vehicles
An international study has concluded the electromagnetic radiation produced by the electric motors powering hybrid, plug-in hybrid, all-electric and hydrogen fuel cell cars to be harmless to passengers inside the vehicles. The EU-funded study, led by Norwegian independent research organization SINTEF, looked at the intensity of magnetic fields in seven electric cars, one … [Read more...]
Laser Technology Could Divert Lightning Strikes
A new next-generation protection system could remove the need for lightning rods and other mitigation measures by preventing lightning strikes from hitting a building entirely. Researchers at the University of Arizona and University of Central Florida have developed a new technology capable of changing the path of lightning bolts using high-energy laser beams. According to the … [Read more...]
More Research into Cancer-Radio Waves Link Needed, Says Canadian Panel
An expert panel reviewing Canadian safety limits for exposure to radio waves has concluded that existing standards appear sufficient and that there is no clear evidence of risks from lower exposure. The independent panel convened by the Royal Society of Canada issued its report Tuesday on Health Canada’s Safety Code 6, which sets limits on exposure to radio frequency fields … [Read more...]
Researchers Make Flat Surface Behave Like Spherical Antenna
Researchers from Southeast University in China have created a new artificial surface that can bend and focus electromagnetic waves similar to an antenna. The achievement, which the team is calling “the first broadband transformation optics metasurface lens,” could lead to the creation of new types of antennas that are flat, ultra low-profile or that conform to the shape of … [Read more...]
- « Previous Page
- 1
- …
- 31
- 32
- 33
- 34
- 35
- …
- 41
- Next Page »
