Measurement of magnetic fields from liquid crystal display (lcd) Computer Monitors

Computers have become ubiquitous in our everyday activity in recent years and have been object of study for eventual adverse health effect. In this paper, variations of the induced magnetic fields with distance from liquid crystal display (LCD) computer monitors have been investigated. A total of 10 different LCD monitors of different models were used for this study. The magnetic fields were measured using a TriField Gauss meter at 5cm steps from the screen up to 40cm. The results showed that the induced magnetic fields decreased as distance from the screen increased. It was also found that magnetic fields from the LCDs for desktop computers are lower than laptops. The induced magnetic fields were generally found to be very low and below the hazardous threshold of the International occupational and general public recommended exposure limit. Thus, there is no conclusive evidence from the study that the use of LCD computer monitors could be associated with health hazard such as spontaneous abortion.