Electromagnetic radiation testing, health, design and reporting services for domestic, commercial and industrial clients, Australia-wide.
In our environment Electromagnetic fields are present but are invisible to the human eye. when there is no current flowing an electric field will exist Electric fields are created by differences in voltage: the higher the voltage, the stronger will be the resultant field. frequency or its corresponding wavelength defines an electromagnetic field (EMF) Fields of different frequencies interact with the body in different ways wavelength and frequency are inseparably intertwined: the higher the frequency the shorter the wavelength. The strength of the electric field is measured in volts per metre (V/m ) Electromagnetic fields (EMFs) are produced by anything with an electric current flowing through it. Light, microwaves, X-rays, and cell phone transmissions are all examples of electromagnetic radiation s the movement of energy, through space or a medium, composed of both electric and magnetic waves. These waves oscillate at frequencies that can vary from a few cycles per second (hertz) to more than 10^20 hertz.
The effects of electromagnetic fields on the human body depend not only on their field level but on their frequency and energy, magnetic fields can largely pass through the human body. Non-ionizing fields EMF to achieve particular benefits in medicine for diagnosis and treatment, for example in magnetic resonance scanners to study the brain and in irradiation for bone repair and cancer treatment. Much of this research is into the 'genotoxicity' of ELF and RF-EMF from electricity power lines and mobile telephones respectively. A genotoxin is an agent that can damage DNA and possibly lead to cancer. The researchers showed that exposing cells to ELF and RF electromagnetic fields could cause DNA to break apart and thus affect how cells develop. Applied Science in Germany is coordinating the six partners who are also performing important work to verify the results of Australian researchers who found increased cancer incidence in mice exposed to EMF.
A report in 2001 from the National Radiation Protection Board (NRPB) said that there may be a very slight increased risk for leukaemia in children. The electromagnetic radiation talked about in this report was mostly from domestic use of electricity. Some homes had a high level of magnetic fields produced by electricity.
National standards draw on the guidelines set by the International Commission on Non-Ionizing Radiation Protection (ICNIRP). In 1873, Scottish physicist James Clerk Maxwell developed a unified theory of electromagnetism. Electromagnetic fields are typically generated by alternating current (AC) in electrical conductors. Electromagnetic Radiation falls under the umbrella of Electromagnetic Fields. Frequency is measured in hertz (Hz), which is the number of times the electromagnetic field oscillates in one second, so an EMF with a frequency of one megahertz (MHz) oscillates 1 million times per second .Mobile telephones are a particular source of EMF that has grown rapidly. The electricity industry in Australia has an active management program on the issue of Electric and Magnetic Fields (EMFs) at power frequencies (50 Hz) which has been in place for many years.
There are currently no Australian standards for exposure to power frequency (50Hz) EMFs. However the National Health and Medical Research Council issued Interim Guidelines for the limits of exposure to 50/60Hz electric and magnetic fields in 1989 which provided some guideline limits for public and occupational exposures.