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The wireless networks technologies are becoming more prevalent. As part of our courses, we have to deal with the technical aspects of these technologies. However, the experience of mobile telephony has shown fears that these products can lead to the general public. It comes from the use of electromagnetic waves at frequencies close to the frequencies of microwaves oven(2.45 GHz). Studies are done since few years in order to identify the possible effects on the body related to prolonged use of mobile phones. Wireless networks like WiFi or ZigBee for example use microwave frequencies. Problems relating to electromagnetic compatibility waves with the electronic devices must also be studied. The question of the safety of these technologies must be addressed with the students. They will may need to install such equipment. We have integrated the teaching of wireless networks in a chapter dealing with current standards of exposure to electromagnetic waves for living beings and the electronic devices. The aim of our approach is the obtention of knowledges by the student. so he will be able to form an opinion and to provide a speech "enlightened" to future users of these networks. To this end, we have developed a visualization tool of the distribution of electromagnetic fields. This tool will help to show the electromagnetic environment in which we live and quantify the values of electromagnetic fields (mobile phone, television, radio, WiFi, Bluetooth, ZigBee, microwave oven, etc.).

Approche pédagogique sur l'innocuité des technologies de réseaux sans fil