As part of a recently-completed European Union study on the effects of multi-source electromagnetic interference on trains, a British consulting company has helped redesign the way that conformance to railway electromagnetic compatibility (EMC) standards is determined. The project in question, a two-year study known as TREND (Test of Rolling Stock Electromagnetic Compatibility … [Read more...]
Sub-Wavelength Images Could Be Made at Radio Frequencies
Scientists have released new theoretical and experimental work that suggests an innovative method using optical wavelengths to overcome certain restrictions on electric field evaluation. Current methods of mapping electric fields at radio frequencies employ certain metallic structures such as dipoles, probes and reference antennas. These structures, however, must be roughly … [Read more...]
Researchers Predict Electrical Resistivity of Metals Under Extreme Pressures
A study recently published in the Proceedings of the National Academy of Sciences (PNAS), headed by scientists at Rensselaer Polytechnic Institute (RPI), has demonstrated how subjecting metals to intense pressures could lower their electrical resistance, which could potentially lead to increased speed and performance in many technologies. Strain engineering, or the … [Read more...]
Storing Cell Phones in Your Front Pocket Could Lower Sperm Count, New Study Suggests
A recent meta-study conducted at the University of Exeter in the UK suggests that radio-frequency electromagnetic radiation (RF-EMR) emitted from cell phones kept in the pockets of men could be a major factor in the modern world’s fast-dropping sperm count. The study, "Effect of mobile telephones on sperm quality: a systematic review and meta-analysis,” led by Fiona Mathews, … [Read more...]
Improving Graphene/Polymer Composites for EMI Shielding
Researchers in China have discovered a way of improving how graphene is used in polymer segregated composites for electromagnetic shielding, using a novel in situ thermal reduction technique that maximizes electromagnetic interference shielding effectiveness (EMI SE) while reducing agglomeration. The use of graphene to build up polymer segregated conductive networks in … [Read more...]
Cell Phone Use for ½ Hour Per Day Linked to Increased Brain Cancer Risk
In a recent study conducted at the University of Bordeaux, researchers have found that using a cell phone for 15 hours a month, or roughly half an hour a day, can lead to a two to three times increase in a person’s chances of getting a brain tumor. The French study, published in British Occupational and Environmental Medicine, centered on 253 cases of glioma – a type of tumor … [Read more...]
Interference From Magnetic Light Rail Trains Forces UW to Move Labs
Sound Transit and the University of Washington are working out a $43 million deal to move some of the university’s labs across campus, in order to avoid interference caused by an underground light rail tunnel. The lab buildings in question contain very precise and sensitive equipment, such as electron microscopes, that are extremely vulnerable to electromagnetic interference. … [Read more...]
New SPADs Maximize Precision While Minimizing Noise
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...]
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