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No increased risk of certain cancers from electromagnetic fields among energy workers
May 01, 2007Risk for leukaemia and brain and breast cancer among Danish utility workers -- a second follow up
Electromagnetic fields do not pose a health hazard to workers in the electrical energy supply industry, suggests a large study of 28,000 people, published ahead of print in Occupational and Environmental Medicine.
Exposure to low frequency electromagnetic fields of 50 to 60 Hz has been implicated in an increased risk of leukaemia, brain and breast cancers.
The researchers used the health and employment records of more than 22,000 utility workers at 99 different electrical energy supply companies in Denmark.
All the employees had been employed at the companies for a minimum of three months since 1968, and they were tracked for an average of nearly 23 years or until death..
When the data were linked to the Danish Cancer Registry where all new cases of cancer in the country have been recorded since 1942, the researchers found "no compelling evidence" for an increased risk of leukaemia, breast or brain cancers.
There were no excess cases of leukaemia among men or of breast cancer among female employees who had been exposed to medium to high frequency magnetic fields.
Women exposed to medium frequency electromagnetic fields were more likely to develop brain cancer than women with background frequency levels.
But this was not true of men who had been exposed to high frequency magnetic fields. They were less likely to develop the disease.
The researchers conclude that their findings agree with those of the International Agency for Research on Cancer in 2002
BMJ Specialty Journals
The researchers used the health and employment records of more than 22,000 utility workers at 99 different electrical energy supply companies in Denmark.
All the employees had been employed at the companies for a minimum of three months since 1968, and they were tracked for an average of nearly 23 years or until death..
When the data were linked to the Danish Cancer Registry where all new cases of cancer in the country have been recorded since 1942, the researchers found "no compelling evidence" for an increased risk of leukaemia, breast or brain cancers.
There were no excess cases of leukaemia among men or of breast cancer among female employees who had been exposed to medium to high frequency magnetic fields.
Women exposed to medium frequency electromagnetic fields were more likely to develop brain cancer than women with background frequency levels.
But this was not true of men who had been exposed to high frequency magnetic fields. They were less likely to develop the disease.
The researchers conclude that their findings agree with those of the International Agency for Research on Cancer in 2002
BMJ Specialty Journals
Electromagnetic Fields Current Events and Electromagnetic Fields News RSSImpact of renewable energy on our oceans must be investigated, say scientists
Scientists from the Universities of Exeter and Plymouth are today calling for urgent research to understand the impact of renewable energy developments on marine life.
A new cloaking method
University of Utah mathematicians developed a new cloaking method, and it's unlikely to lead to invisibility cloaks like those used by Harry Potter or Romulan spaceships in "Star Trek." Instead, the new method someday might shield submarines from sonar, planes from radar, buildings from earthquakes, and oil rigs and coastal structures from tsunamis.
Discovery at UAB brings us nearer to making the dream of invisibility true
A group of researchers from the Department of Physics at UAB have designed a device, called a dc metamaterial, which makes objects invisible under certain light - very low frequency electromagnetic waves - by making the inside of the magnetic field zero but not altering the exterior field.
NIST develops novel ion trap for sensing force and light
Miniature devices for trapping ions (electrically charged atoms) are common components in atomic clocks and quantum computing research. Now, a novel ion trap geometry demonstrated at the National Institute of Standards and Technology (NIST) could usher in a new generation of applications because the device holds promise as a stylus for sensing very small forces or as an interface for efficient transfer of individual light particles for quantum communications.
NIST super-sensors to measure 'signature' of inflationary universe
What happened in the first trillionth of a trillionth of a trillionth of a second after the Big Bang?
NASA spacecraft show three dimensional anatomy of a solar storm
Twin NASA spacecraft have provided scientists with their first view of the speed, trajectory, and three-dimensional shape of powerful explosions from the sun known as coronal mass ejections, or CMEs.
Do cell phones increase brain cancer risk?
Major research initiatives are needed immediately to assess the possibility that using cellular phones may lead to an increased risk of brain tumors.
Report identifies research to bolster knowledge of health effects of wireless communication devices
The rapid increase in the use of wireless communication devices in recent years has been accompanied by a significant amount of research into potential health effects from high exposure to radiofrequency (RF) energy emitted by these devices.
Micro microwave does pinpoint cooking for miniaturized labs
Researchers at the National Institute of Standards of Technology (NIST) and George Mason University have demonstrated what is probably the world's smallest microwave oven, a tiny mechanism that can heat a pinhead-sized drop of liquid inside a container slightly shorter than an ant and half as wide as a single hair.
Political decisions harming cancer treatment in Europe
ecent political decisions have had serious consequences for European oncology, said Professor John Smyth at ECCO 14, the European Cancer Conference, today (Monday 24 September 2007).
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Electromagnetic Fields: A Consumer's Guide to the Issues and How to Protect Ourselves by B Blake Levitt (Author) With ubiquitous electropollution from cell phones/towers, powerlines, computers, and wireless devices, this eye-opening book is the best resource for parents, community planners, healthcare professionals, and scientists alike. Winner, 1996 Award of Excellence from the American Medical Writers Association. From the earth’s natural electromagnetic background to “Green” EMF safety designs, Electromagnetic Fields explains which illnesses are associated with artificial radiation, how technology impacts human health and wildlife, and how to live more safely. “If you’re looking for the plain unvarnished truth and the best available advice, this is one book you should not miss.”—Robert O. Becker, M.D., author of Cross Currents and coauthor of The Body... |
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Electromagnetic Fields by Roald K. Wangsness (Author) This revised edition provides patient guidance in its clear and organized presentation of problems. It is rich in variety, large in number and provides very careful treatment of relativity. One outstanding feature is the inclusion of simple, standard examples demonstrated in different methods that will allow students to enhance and understand their calculating abilities. There are over 145 worked examples; virtually all of the standard problems are included. |
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Electromagnetic Fields (IEEE Press Series on Electromagnetic Wave Theory) by Jean G. Van Bladel (Author) Professor Jean Van Bladel, an eminent researcher and educator in fundamental electromagnetic theory and its application in electrical engineering, has updated and expanded his definitive text and reference on electromagnetic fields to twice its original content. This new edition incorporates the latest methods, theory, formulations, and applications that relate to today's technologies. With an emphasis on basic principles and a focus on electromagnetic formulation and analysis, Electromagnetic Fields, Second Edition includes detailed discussions of electrostatic fields, potential theory, propagation in waveguides and unbounded space, scattering by obstacles, penetration through apertures, and field behavior at high and low frequencies. |
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Electromagnetic Fields and Interactions (Blaisdell Book in the Pure and Applied Sciences.) by Richard Becker (Author) This classic introduction to electromagnetic fields, thoroughly revised in 1964 and available here in a one-volume edition, includes an invaluable self-contained section on quantum theory. Problems with solutions. 148 illustrations. Reprint of 1964 ed. |
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The Electromagnetic Field by Albert Shadowitz (Author) Directed to advanced undergraduates in physics or electrical engineering, this comprehensive text covers electric and magnetic fields, electromagnetic theory and related topics including relativity. Each section includes worked examples and 15 to 25 problems. (Solutions for odd-number problems only.) Reprint of 1975 ed. |
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Extech 480823 Electromagnetic Field and Extremely Low Frequency Meter by Extech Instruments The Extech electromagnetic field and extremely low frequency meter has a large 1/2-inch LCD 3-1/2 digit display of electromagnetic field (EMF) level in milligauss or microtesla. It also comes with over range indication, and a sampling time of 2.5-times per second. The meter is 5.2x2.8x1-inches and comes complete with a 9-volt battery. |
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Field and Wave Electromagnetics (2nd Edition) by David K. Cheng (Author) David Cheng's Field and Wave Electromagnetics builds the electromagnetic model using an axiomatic approach in steps: first for static fields, then for magnetic fields, and finally for time-varying fields leading to Maxwell's equations. |
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ElectroSensor Electro Magnetic Field Detector by Sonic Technology Products With the push of a button on the ElectroSensor hand-held meter, you can quickly and accurately measure the level of EMFs emitted by all common electrical appliances and equipment. The LED light bar scale measures from 1.5 to 30 milliGauss. The pick-up coil is located in the tip of the unit which can be rotated for increased directionality. |
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Lutron 822-A Digital EMF Meter by Lutron Electronic Enterprise LTD Rugged, Compact, & Lightweight Magnetic Field Meter Couldn't be easier to use, just turn it on and get accurate reliable readings. Perfect for situations needing high resolution measurements of AC magnetic fields without spending a lot of money. Large LCD display reads 0.1 -199.9 mG over the ELF range of 30 - 400 Hz. Provides readout in both mG and microTesla. Calibrated to within 4% ±3 digits at 50/60 Hz. This single axis meter samples every 0.4 seconds when flipped on with slide switch. Requires one 9V battery. One year limited warrantee.
Like all single axis meters, this meter must be rotated during use to find the proper orientation to the magnetic field being measured to get proper readings. |
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ZEROCOM Electromagnetic Field Absorber Blue Ladybug Icon by ZEROPA What is ZEROCOM?: It is a functional ceramic commodity that is made of conductivity ceramic materials whose electromagnetic waves absorbing rate is 97.5%(measured by the Korea Research Institute of Standards and Science) and which absorbs electromagnetic waves radiating from computer and TV and keeps a human body away from the wave. ZEROCOM is designed to be attached to the upper part of the back of the monitor of PC and TV where the electronic gun radiates strong electromagnetic waves and to weaken the waves. In particular, it is contained in a plastic case, which is hermetically sealed and rocessed with high frequencies and various designs printed according to the requests from consumers. Characteristics of the product: Electromagnetic waves consist of two components such as the... |
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