How might mobile phone affect the brain?
It is widely accepted that emissions from mobile phones cause minute heating of the brain. This is due to two factors. First, the electric field generated by mobile phone causes electrically charged particles in brain tissue to move. The electrical properties of the brain tissue provide some resistance to this movement, and this produces heat. Second, the electric field causes water molecules, which are positively charged at one end and negatively charged at the other, to rotate such that they are electrically aligned with the electrical field. Due to the cohesive properties of water, there is again some resistance to this process, thus producing heat. The power output of mobile phones are limited by international standards to protect users from excessive heating. These standards dictate that the average specific energy absorption rate (SAR) in any 10g region of biological tissue produced by radiofrequency emission must be less than 2 W/kg for the public and 10 W/kg for those who are o
