What is EMF radiation?
Ingrid says she tested all her household appliances for their EMF strength, and whilst I knowingly nodded, it lead me to silently say Why?
Over the past few years, I've of course heard of concerns - mainly about mobiles - relating to some sort of radiation from all our household appliances, including power lines, microwave ovens, computer and TV screens, security devices, radars and most recently mobile phones and their base stations.
Electromagnetic fields are present everywhere in our environment but are invisible to the human eye. Electric fields exist whenever charge is present and are measured in volts per metre (V/m). Magnetic fields arise from current flow. Their flux densities are measured in microtesla (µT) or millitesla (mT).
The concern arises really because the human body also has electromagnetic fields.
Tiny electrical currents exist in the human body due to the chemical reactions that occur as part of the normal bodily functions. Our nerves relay signals by transmitting electric impulses. Even the heart is electrically active - an activity that can be traced with an electrocardiogram.
Low frequency and high frequency electromagnetic waves affect the human body in different ways. The main effect of radiofrequency electromagnetic fields is heating of body tissues.
According to the World Health Organisation, short-term exposure to very high levels of electromagnetic fields can be harmful to health. There are insufficint studies and inconclusive results regarding the long-term health effects caused by cumulative low level electromagnetic fields exposures.
I'm going to rather be safe than foolhardy - have my electrical appliances tested and switch it off when not used - I may even reduce my ecological footprint...
Over the past few years, I've of course heard of concerns - mainly about mobiles - relating to some sort of radiation from all our household appliances, including power lines, microwave ovens, computer and TV screens, security devices, radars and most recently mobile phones and their base stations.
Electromagnetic fields are present everywhere in our environment but are invisible to the human eye. Electric fields exist whenever charge is present and are measured in volts per metre (V/m). Magnetic fields arise from current flow. Their flux densities are measured in microtesla (µT) or millitesla (mT).
The concern arises really because the human body also has electromagnetic fields.
Tiny electrical currents exist in the human body due to the chemical reactions that occur as part of the normal bodily functions. Our nerves relay signals by transmitting electric impulses. Even the heart is electrically active - an activity that can be traced with an electrocardiogram.
Low frequency and high frequency electromagnetic waves affect the human body in different ways. The main effect of radiofrequency electromagnetic fields is heating of body tissues.
According to the World Health Organisation, short-term exposure to very high levels of electromagnetic fields can be harmful to health. There are insufficint studies and inconclusive results regarding the long-term health effects caused by cumulative low level electromagnetic fields exposures.
I'm going to rather be safe than foolhardy - have my electrical appliances tested and switch it off when not used - I may even reduce my ecological footprint...
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