Next-generation Particle Accelerator -- ALICE -- Accelerates To 4-Million-Volt Milestone Nov 19, 2008
The booster is maintained at a temperature of -271 degrees Celsius, at which temperature it becomes superconducting and capable of sustaining very high electric and magnetic fields. This accelerated beam will eventually be used to generate pulses of infrared, ultraviolet and x-ray light, creating the ultimate stroboscopic light source capable of making real-time movies of chemical reactions at the atomic level. (Science Daily)
Planck Satellite Mission Set to Explore Cosmic Secrets Nov 18, 2008
WMAP can measure less than 10 percent of the information contained in the CMB temperature anisotropies and only a tiny fraction in the directional deviations of the CMB s polarization (the bearing of its electric and magnetic fields as it propagates through space). In contrast, Planck s full-sky view will measure essentially all the temperature information and a significant part of the polarization data. (Scientific American)
Middle school science adventures Nov 14, 2008
The engine works when electric and magnetic fields thrust seawater out of a chamber, which propels the vehicle forward. Taking home second place, a $5,000 scholarship, was Katherine Glockner, 14, of Encinitas, Calif. (Science News for Kids)
U.S. scientists find the switch that turns on the northern lights Jul 27, 2008
To answer the question, the Themis mission launched five identical satellites, each about the size of a washing machine, to measure the electric and magnetic fields as well as the particles passing by at different locations around Earth. Coupled with ground observations, scientists were able to deduce the order of events in a substorm in February. (International Herald Tribune -- Health)
Engineer has new take on physics Jul 13, 2008
"Einstein worked for 17 years trying to interrelate gravitational, electric and magnetic fields," he said, but the physicist never succeeded. DuVall said he thought he saw a way to link them mathematically, and has made some presentations, including talks at the University of Arkansas, his alma mater. (AL.com)
The Dangers of Electromagnetic Radi... Jul 3, 2008
It is well known that alternating electric and magnetic fields outside the body are capable of inducing electric fields within the body. Radiant energy is absorbed according to , which depend on the frequency of the radiation. (Suite101.com)
* Activists protest as Ma visits WiMAX Expo Jun 4, 2008
Chen, a professor at the Chia Nan University of Pharmacy and Science, said the government should think twice about boosting WiMAX technology because electric and magnetic fields from power lines, wiring and appliances are harmful to human health. She cited an international study that found exposure to electromagnetic radiation may cause cancer and was likely responsible for an increase in childhood leukemia, although more research was necessary to establish the link. (Taipei Times, Taiwan -- World)
New telescope may uncover space mysteries Jun 4, 2008
"Gamma rays are emitted in the most extreme environments in the universe, where the gravitational and electric and magnetic fields are so much higher than anything you could ever study directly on Earth.For example, GLAST could help find , the as yet unseen substance that could make up 90 percent of all matter in the universe, whose presence scientists infer by its effects on the motion of galaxies. In theory, dark matter particles are their own antiparticles, meaning they destroy each other... (MSNBC -- Technology)
New Material A 'Perfect' Absorber Of Light Jun 2, 2008
The group used computer simulations based on prior research findings in the field to design resonators able to couple individually to electric and magnetic fields to successfully absorb all incident radiation, according to their findings. Because its elements can separately absorb the electric and magnetic components of an electromagnetic wave, the "perfect metamaterial absorber" created by the researchers can be highly absorptive over a narrow frequency range. (Science Daily)
New metamaterial proves to be a 'perfect' absorber of light May 30, 2008
Resonators couple individually to electric and magnetic fields to absorb all incident radiation ... The group used computer simulations based on prior research findings in the field to design resonators able to couple individually to electric and magnetic fields to successfully absorb all incident radiation, according to their findings. (EurekAlert!)
MIT researchers image fusion reaction Mar 1, 2008
Now that the MIT scientists have invented a way to observe the electric and magnetic fields around the pellets, they will fine tune the technique by observing spherical shape and controlling the process with enough precision to induce nuclear ignition. Funded for the fusion research was provided by the Fusion Science Center for Extreme States of Matter and Fast Ignition at the University of Rochester and the U.S. Energy Department's Office of Inertial Confinement. (EETimes)
The Electromagnetic Spectrum Nov 21, 2007
Electromagnetic waves are oscillations in electric and magnetic fields ... In electromagnetic waves the electric and magnetic fields are perpendicular to each other and to the direction the wave is traveling ... Both the electric and magnetic fields are oscillating between maximum positive and maximum negative values. (Suite101.com)
What Are Electromagnetic Waves? Nov 21, 2007
To understand electromagnetic waves, one must first understand electric and magnetic fields and how they interact ... How Electric and Magnetic Fields Interact ... In this way the electric and magnetic fields oscillate and propagate through space. (Suite101.com)
Microwave Ovens Heat Food Unevenly Nov 12, 2007
Electromagnetic waves are wavelike oscillations of electric and magnetic fields ... Giga means billion, so the electric and magnetic fields oscillate fast enough to make 2 ... For electromagnetic waves, the peaks of the waves occur when the electric and magnetic fields are maximally positive. (Suite101.com)
How Do Microwave Ovens Work? Nov 12, 2007
Electromagnetic waves are wavelike oscillations of electric and magnetic fields ... Giga means billion, so the electric and magnetic fields oscillate fast enough to make 2. (Suite101.com)
Exposure to the invisible cloud of energy called electrosmog is rising Sep 24, 2007
Power lines, electric generators and motors, electric appliances, electronic devices and wireless communication systems all generate electric and magnetic fields, which together constitute EMF - fields of energy created by any electrical system. Taking the underground train system to work. (International Herald Tribune -- Business)
Study Links Radio Towers to Child Leukemia Risk Jul 31, 2007
The researchers took measurements of the electric and magnetic fields surrounding AM transmission towers in various areas of South Korea, and used a mathematical model to estimate nearby residents' exposure to radiation from the towers. The study included 1,928 children with leukemia, 956 with brain cancer and 3,082 healthy children. (MEDLINEplus)
Electro-nirvana? Not so fast Jun 9, 2007
"First, when were talking about health effects, it boils down to how much of the energy is absorbed in our tissue and is it enough to cause damage (by heating or another mechanism). So, most times when were talking about radiofrequency radiation (electric and magnetic fields), we talk in terms of a Specific Absorption or Specific Absorption Rate (SA or SAR). Its a bit like ionizing radiation when we say you can be exposed to X rays, but how much was absorbed? It is the amount that is... (MSNBC)
Jamison airs grievances over power lines on land Jun 2, 2007
An environmental assessment performed by TVA before the lines were built contains a section on electric and magnetic fields stating route planners would look for routes which kept 161-kV lines at least 300 feet from occupied buildings. The lines in Jamison's yard run as close as 17 feet from his house, he says. (Columbus Commercial Dispatch, MS)
Magnetic fields tied to railway workers' cancer May 30, 2007
Electric and magnetic fields (EMFs) are areas of energy surrounding electrical devices, including appliances, computers, electrical wiring and power lines. They also occur naturally in the environment. (Scientific American)
Electromagnetic fields linked to cancers in railway workers May 25, 2007
Electric and magnetic fields are areas of energy that surround any electrical device, and are produced by power lines, electrical wiring and appliances. While electric fields are easily shielded or weakened by walls and other objects, magnetic fields can actually penetrate the body, and thus have been studied in relation to cancer. (Insider Medicine)
Jamison sues to block TVA power to SeverCorr May 4, 2007
The document also outlines the post-construction impacts of electric and magnetic fields and its views on route selection. Jamison is seeking compensatory and consequential damages for what he claims are TVA's negligent actions and breach of contract. (Columbus Commercial Dispatch, MS)
Atomic ticker clocks up 50 years Mar 24, 2007
Atomic clocks are still much more constant than any other current method of time-keeping, although they are sensitive in a very small way to changes in electric and magnetic fields. The development of the atomic clock was partly helped by technological advances such as radar during World War II.. (BBC News -- Science)
Casimir Effect Heats Up Feb 25, 2007
According to quantum mechanics, the vacuum contains fleeting electromagnetic waves, in turn consisting of electric and magnetic fields. The electric fields can slightly rearrange the charge in atoms. (Science Daily)
