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Measuring the EMF of various widely used electronic devices and their possible impact to our life
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Measuring the EMF of various widely used electronic devices and their possible impact to our life

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  • 1. Technological Education Institute of PIRAEUS Computer Systems Engineering DepartmentP. H. Yannakopoulos, A. A. Fotopoulos,D. Katsigiannopoulos, St. KatsikakisInternational Scientific ConferenceeRA-5 2010
  • 2. Abstract Scientists, doctors and some European governments are adding their voices to the growing alarm that the universal use of mobile devices may be the start of a medical catastrophe for the future. Mobile phone radiation and health concerns have been raised, especially following the enormous increase in the use of wireless mobile telephony (GSM and 3G) throughout the world. TEI of Piraeus International Scientific Conference eRA-5 2
  • 3. Abstract These concerns have induced a large body of research because mobile phones and wireless devices use electromagnetic waves in the microwave range. A similar situation exists regarding other digital wireless systems, such as data communication networks, Bluetooth, Wi-Fi, DECT phones and CBs which emit in various regions of the spectrum giving rise to cumulative radiation exposure. In the present study we measure the EMF of various mobile and wireless equipment. TEI of Piraeus International Scientific Conference eRA-5 3
  • 4. Equipment CORNET ED25G Super wide bandwidth (1MHz-8GHz) RF field strength power measurement - External SMA connector -direct connection to RF signal sources, -External Antenna -5.8GHz WLAN measurement -UWB ultra wideband signals - High sensitivity, -55dBm to +5dBm TEI of Piraeus International Scientific Conference eRA-5 4
  • 5. Mobile Phones MeasurementsSony Ericsson K 350i 1827mW/m2  Type of Mobile phone 578 mW/m2 230,1 mW/m2 159 mW/m2Sony Ericsson W 995i Power Density(mW/m2): 110 mW/m2 89 mW/m2  (in contact) 75 mW/m2 61 mW/m2  (5 cm)Sony Ericson 750i 110 mW/m2  (10 cm) 89 mW/m2 75 mW/m2  (20 cm) 67 mW/m2 TEI of Piraeus International Scientific Conference eRA-5 5
  • 6. Mobile Phones MeasurementsNokia 3210 1827mW/m2  Type of Mobile phone 578 mW/m2 364,7 mW/m2 230,1 mW/m2General Mobile DSTL -1 Power Density(mW/m2): 1827mW/m2 1827mW/m2  (in contact) 1827mW/m2 1827mW/m2  (5 cm)Nokia 2730 1827mW/m2  (10 cm) 916 mW/m2 578 mW/m2  (20 cm) 364,7 mW/m TEI of Piraeus International Scientific Conference eRA-5 6
  • 7. Mobile Phones MeasurementsNokia 6310i 1827 mW /m2  Type of Mobile phone 578 mW/m2 364,7 mW/m2 230,1 mW/m2Nokia 6233 Power Density(mW/m2): 1827 mW /m2 1827 mW /m2  (in contact) 364,7 mW/m2 230,1 mW/m2  (5 cm)LG R-1 1827 mW /m2  (10 cm) 1827 mW /m2 916 mW/m  (20 cm) 578 mW/m2 TEI of Piraeus International Scientific Conference eRA-5 7
  • 8. THE HEALTH EFFECTS TEI of Piraeus International Scientific Conference eRA-5 8
  • 9. Key points A wide range of environmental influences causes biological effects. Biological effect does not equal health hazard. Special research is needed to identify and measure health hazards. At low frequencies, external electric and magnetic fields induce small circulating currents within the body. In virtually all ordinary environments, the levels of induced currents inside the body are too small to produce obvious effects. The main effect of radiofrequency electromagnetic fields is heating of body tissues. TEI of Piraeus International Scientific Conference eRA-5 9
  • 10. Key points There is no doubt that short-term exposure to very high levels of electromagnetic fields can be harmful to health. Current public concern focuses on possible long-term health effects caused by exposure to electromagnetic fields at levels below those required to trigger acute biological responses. There is no evidence to conclude that exposure to low level electromagnetic fields is harmful to human health. The focus of international research is the investigation of possible links between cancer and electromagnetic fields, at power line and radiofrequencies TEI of Piraeus International Scientific Conference eRA-5 10
  • 11. What happens when you are exposedto electromagnetic fields? Exposure to electromagnetic fields is not a new phenomenon. However, during the 20th century, environmental exposure to man-made electromagnetic fields has been steadily increasing as growing electricity demand, ever-advancing technologies and changes in social behavior have created more and more artificial sources. Everyone is exposed to a complex mix of weak electric and magnetic fields, both at home and at work, from the generation and transmission of electricity, domestic appliances and industrial equipment, to telecommunications and broadcasting. TEI of Piraeus International Scientific Conference eRA-5 11
  • 12. What happens when you are exposedto electromagnetic fields? Tiny electrical currents exist in the human body due to the chemical reactions that occur as part of the normal bodily functions, even in the absence of external electric fields. For example, nerves relay signals by transmitting electric impulses. Most biochemical reactions from digestion to brain activities go along with the rearrangement of charged particles. Even the heart is electrically active - an activity that your doctor can trace with the help of an electrocardiogram. TEI of Piraeus International Scientific Conference eRA-5 12
  • 13. The effect of Low-frequencyelectric fields Fields influence the human body just as they influence any other material made up of charged particles. When electric fields act on conductive materials, they influence the distribution of electric charges at their surface. They cause current to flow through the body to the ground. TEI of Piraeus International Scientific Conference eRA-5 13
  • 14. The effect of Low-frequencyelectric fields Low-frequency magnetic fields induce circulating currents within the human body. The strength of these currents depends on the intensity of the outside magnetic field. If sufficiently large, these currents could cause stimulation of nerves and muscles or affect other biological processes TEI of Piraeus International Scientific Conference eRA-5 14
  • 15. Electromagnetic fields andcancer Despite many studies, the evidence for any effect remains highly controversial. However, it is clear that if electromagnetic fields do have an effect on cancer, then any increase in risk will be extremely small. The results to date contain many inconsistencies, but no large increases in risk have been found for any cancer in children or adults. TEI of Piraeus International Scientific Conference eRA-5 15
  • 16. What is a health hazard? The body does not possess adequate compensation mechanisms for all biological effects. Changes that are irreversible and stress the system for long periods of time may constitute a health hazard TEI of Piraeus International Scientific Conference eRA-5 16
  • 17. Effects on general health Some members of the public have attributed a diffuse collection of symptoms to low levels of exposure to electromagnetic fields at home. Reported symptoms include headaches, anxiety, suicide and depression, nausea, fatigue and loss of libido. To date, scientific evidence does not support a link between these symptoms and exposure to electromagnetic fields. At least some of these health problems may be caused by noise or other factors in the environment, or by anxiety related to the presence of new technologies. TEI of Piraeus International Scientific Conference eRA-5 17
  • 18. Widespread concerns for health Over the course of the past decade, numerous electromagnetic field sources have become the focus of health concerns, including power lines, microwave ovens, computer and TV screens, security devices, radars and most recently mobile phones and their base stations. TEI of Piraeus International Scientific Conference eRA-5 18
  • 19. Measurements Wireless on the go 2000 1800 1827 1600 1400 1200Electric Field 1000 910 800 600 578 400 200 230 115 69.4 0 0 10 20 25 40 60 TEI of Piraeus International Scientific Conference eRA-5 19
  • 20. Measurements Microwave Oven 700 648 600 578 500Electric Field 400 300 230 230 200 100 110 43 0 10 0 0.07 0.1 0.15 0.3 0.5 1 TEI of Piraeus International Scientific Conference eRA-5 20
  • 21. Measurements Microwave Oven 700 600 590 560 500Magnetic Field 400 380 320 300 200 100 14 0 0 5 10 20 70 TEI of Piraeus International Scientific Conference eRA-5 21
  • 22. Measurements Wireless Network 700 600 578 500Electric Field 400 300 230 200 100 69 43 21 0 0 5 10 15 20 TEI of Piraeus International Scientific Conference eRA-5 22
  • 23. SAR Rating Manufacturer Model SAR rating W/Kg Samsung F210 0.20 Nokia 6267 0.31 Emporia Life 0.37 HTC TYTN11 38 LG KE970 Shine 0.43 LG KU970 0.43 Nokia 6290 0.47 Samsung U600 0.48 Nokia 8800i 0.50 LG KG130 0.52 TEI of Piraeus International Scientific Conference eRA-5 23
  • 24. SAR Rating Manufacturer Model SAR rating W/Kg Sony Ericsson T650 1.80 Sony Ericsson W880i 1.45 Nokia E51 1.40 Sony Ericsson W950i 1.35 Sony Ericsson Z610i 1.32 Sony Ericsson K810i 1.31 Sony Ericsson W610i 1.31 Sony Ericsson W660i 1.27 Sony Ericsson K550i 1.25 LG + Nokia KU250 + N5700 1.2 TEI of Piraeus International Scientific Conference eRA-5 24
  • 25. Conclusions from scientificresearch In the area of biological effects and medical applications of non-ionizing radiation approximately 25,000 articles have been published over the past 30 years. Despite the feeling of some people that more research needs to be done, scientific knowledge in this area is now more extensive than for most chemicals. Based on a recent in-depth review of the scientific literature, the WHO concluded that current evidence does not confirm the existence of any health consequences from exposure to low level electromagnetic fields. However, some gaps in knowledge about biological effects exist and need further research. TEI of Piraeus International Scientific Conference eRA-5 25
  • 26. Technological Education Institute of PIRAEUS Computer Systems Engineering Department Thank you for your attentionInternational Scientific ConferenceeRA-5 2010 TEI of Piraeus International Scientific Conference eRA-5 26