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Electromagnetic Fields

Electric and magnetic fields (EMFs) are areas of energy that surround electrical devices. Power lines, electrical wiring, and appliances produce EMFs. Some people worry about EMF exposure and cancer. A few studies found a link between EMF exposure and a higher risk of childhood leukemia, but the link is weak. Other studies didn't find a link between EMF exposure and other childhood cancers.

For adults, studies of EMF exposure from power lines and electric blankets show little evidence of a link to cancer. In adults, EMFs may reduce heart rate and interfere with brain electrical activity during sleep. This may or may not affect your health.

Some people worry that wireless and cellular phones cause cancer. They give off radio-frequency energy (RF), a form of electromagnetic radiation. Scientists need to do more research on this before they can say for sure.

National Institute of Environmental Health Sciences

Electromagnetic Field on Wikipedia

In the physics of electromagnetism, ''the'' '''electromagnetic field''' is a field composed of two related vectorial fields —the electric field and the magnetic field. When referred to as "the" electromagnetic field, encompassing all of space, whereas typically such a field is limited to a local area, based around an object in space. This means that the vector (spatial)s ('''E''' and '''B''') that characterize the field each have a value defined at each point of space and time. If only '''E''', the electric field, is nonzero and is constant in time, the field is said to be an electrostatic field. '''E''' and '''B''' are linked by Maxwell's equations. Electromagnetic fields can be explained with a quantum basis by quantum electrodynamics.

Behaviour of the electromagnetic field

;(A fluid dynamics interpretation) The electric and magnetic vector fields can be thought of as being the velocities of a pair of fluids which permeate space. In the absence of charges these fluids would be at rest, so that their velocity fields would be zero. Electric charges act either as sources or sinks of the electric fluid. An electron is constantly absorbing electric fluid around it at some rate, call it ε. Protons are the reverse: they constantly pour electric "liquid" towards the surrounding space at rate ε, so liquid moves away from the proton with speed : v = {\epsilon \over 4 \pi r^2} (where ''r'' is distance of the fluid away from the proton) so that the total flux of liquid going through any (imaginary) sphere which contains that proton is the area of the sphere times the speed of the fluid flowing through it: 4 \pi r^2 \cdot v = \epsilon . Magnetic liquid, on the other hand, has no sources or sinks: nothing can pour out or suck up magnetic fluid. Magnetic fluid is incompressible, which means that its density does not change: it is not possible to ...   [ Read More ]


External Resources

SAR Shield - Cell phone radiation shield that provides protection against radiation and electromagnetic fields.

Cutting Edge Catalog - Products to protect the immune system from environmental stress, including air and water filters, full spectrum lighting, electromagnetic field protection, geopathic detection and mitigation equipment, magnets, light therapy, and environmental testing.

Advanced Living Technology - An electromagnetic shield that provides protection against radiation and electromagnetic fields, offering industry news and testimonials.

Aquarius Wholism - Ozaliet benzoliet produts to neutralize the negative radiation of electromagnetic fields in home and office space. Includes product descriptions and usage instructions.

Teslar - Alternative healthcare via a watch, which protects from life's disturbing electromagnetic field and extremely low frequencies.

Vibration Engineering Consultants - Providing Service to users of Electron Microscopes and other Systems with Vibration, Electromagnetic Fields (EMI, EMF) or Acoustical Disturbance problems / specifications.

Biophan Technologies - MRI-compatible Pacemaker - Implantable cardiac pacemakers and other critical medical devices insensitive to magnetic resonance imaging (MRI) and other equipment using magnetic fields, radio waves, and similar forms of electromagnetic interference (EMI).

Empire - FDTD 3D electromagnetic field simulator.

CST - Computer Simulation Technology - 3D electromagnetic field simulation.

EMF Resources and Information - Research and management about electromagnetic fields. Includes scientific papers, PowerQuality and Property Management articles.



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