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Electromagnetic hypersensitivity, EHS (sometimes called electrical hypersensitivity) is a complex phenomenon, which raises questions in doctors and scientists alike. Synonyms are...
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So far, almost 40 good-quality provocation studies have been performed with people reporting electromagnetic sensitivity. In order to be able to rule out the possibility that the...
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Even if no causal connection to electromagnetic fields is found, the symptoms themselves are very real and we need to pay attention to that.To begin with, the presence of...
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When talking about electromagnetic fields, it is unavoidable to use technical and physics terms. To make it easier for the reader, a few general terms are explained here.Current...
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Chaque jour, nous sommes confrontés aux champs électromagnétiques. Il existe des rayonnements électromagnétiques naturels, comme la lumière du soleil et la chaleur. En outre, nous...
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Is ultrasound audible?Sounds with a frequency of 20 kHz and higher are referred to as ultrasound (or ultrasonic sound). High frequency sound is sound of which the frequency lies...
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In our daily living environment we come into contact with “non-audible” ultrasound and sound of high frequencies when using devices such as “Mosquito” products, products for...
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Belgium is preparing a legislation which will establish rules for environment messages concerning construction products. This legislation will apply to all construction products...
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The Royal Decree of December 5th, 2004, which transforms the European Directive 97/68/EC, establishes the maximum exhaust emissions for carbon monoxide (CO), carbohydrates (CH),...
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Sound is the succession of pressure changes which are propagated in a compressible medium, such as air, water or solid materials. One also refers to this as “acoustic waves”...