A WiFi router first gets the data from a phone/cable line connected to it, converts this data into radio signals, and then transmits them in its range.
These signals are detected by nearby devices (e.g., laptop,
smartphone etc.) that contain a wireless adapter. This adapter translates the
data (that you are trying to send to the Internet) into radio signals through
the use of an antenna.
The router receives these radio signals (sent by your smartphone), decodes them into data, and then sends that data to the Internet via an Ethernet connection. The same process is repeated in the reverse direction and Voila! Within seconds, you can update your Facebook status!
This process may sound like it takes a long time when described like this, but all of this actually takes place within a fraction of a second, thanks to the speed of radio waves, which, like any electromagnetic wave, travel at the speed of light.
Is WiFi Dangerous?
Absolutely not!
At least, that’s what the World Health Organization (WHO)
says about it. Until we hear otherwise, you can keep watching videos on your
tablet using WiFi without adversely affecting your, or anyone else’s, health!
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