If there is no connection with WiFi and children will be linked to Hdreuidim it as their iPhone and

Spread of the radio waves in space so that doubling the distance we get a quarter google music of the signal strength. Radio signal in dBm usually measured (ie dB Millie Watts). When multiplying power means adding 3 dB (and cross - download at 3dB). When we double the distance of the source signal (usually - antenna) received a 6dB reduction in the intensity of radio signals to get there (do not forget: double the distance, a quarter of signal intensity)
Easy access google music point sends a WIFI power (EIRP) of 20dBm (which is 100 million watts). This is a complete transfer of power from the gain (profit) for the antenna. Standard observation WIFI (laptop, smartphone, etc ...) is not transferred more than 15dBm or 32 million watts.
At 2.4 GHz (the frequency difference permitted for use in this country), without getting into the issue of "near-field" radio waves lose 40dB was the first meter. This means that if our access point sends 20dBm. It becomes 20dBm, after just one meter! (Down from 100 watts to 0,010,000 milliseconds or 0.00001 watts W). This 1.2 million power transmission parts of our phone, if it is related google music to our heads! If the access point is 5 meters away, we've lost another google music 14dB power (which was out about 0.0000004 W or 1 divided by 5,000,000 powertrain mobile phone, when connected to our head)
If there is no connection with WiFi and children will be linked to Hdreuidim it as their iPhone and a 3G phone, which communicates with the cell near the (not always so close) force transmitted intensity is relatively high (as it is - for 2 watts of generation 2 and generation 3 W, usually). Means that all child working with his phone a few meters from the device (say, a child with long arms) and 20-100 google music disclose the radiation intensity, the cellular google music connection instead of WiFi connections work without taking into account the fact that the work frequency mobile network google music expansion better space (low frequency that they lose less than in the first meter).
I never got into radiation (non-ionizing, by the way ...), mobile devices, I'm a doctor, not a specialist oncologist or radiation. But those parents who are competing for the introduction of AP classes google music it comes to their children

high doses, google music much more.