Topics covered in this post are:
- Introduction to Wi-Fi
- What is Wi-Fi?
- Working of Wi-Fi
Introduction to Wi-Fi
Almost every people have got an interaction with wifi at different places like Home, Offices, Colleges etc. to perform some tasks that uses internet. You also might be using wifi to read this blog .So, there is not doubt about that wifi is everywhere, Now a days, Hotels, colleges, railway stations etc. public areas are giving free wifi access to the peoples. But also there are places like where your have to pay some money to run the internet.
What is Wi-Fi?
Wi-Fi is a technology that provides a way to connect to the internet wirelessly. Wifi uses radio waves (A form of electro-magnetic wave) which travels at a very high speed to send and receive data in a very fast manner. Wifi sends and receives data in the form of packets. Wifi is also called as “IEEE 802.11” . Wifi is also referred as WLAN(Wireless Local Area Network) or Wireless Networking. There is no official full form of wifi but you will find Wifi stands for “Wireless Fidelity” at most of the places.Wifi allows multiple users to connect to internet through the same router without any disturbance.
Working of Wi-Fi
As already mentioned wifi uses radio signal to transmit the data. Wifi works at 2.4GHz or 5GHz frequency per second. Here 2.4GHz frequency is used for large distance and has little bit slower internet connection than 5GHz, Whereas 5GHz frequency is used for small distances and provides high speed internet connection.
When you send some data to the internet then the data is then converted into the binary formats(0’s and 1’s) and binded into small bundle known as packets. These packets are then transferred to the internet using different-different routers and then finally reaches at the destination.
Let us understand the above lined by taking a simple example. Suppose you want to send an email to your friend, when you click on send then that data is the converted into binary form and also forms smaller packets which travels through number of routers to reach at the destination point. At the destination points the packets are re-arranged and decoded to transfer that in a human readable format.
Does Wi-Fi signal damage us?
Wifi works at extremely low voltage . Wifi uses non-iodizing wavelengths of radiation that are harmless to human body.According to WHO(World Health Organization), there is no scientific evidence that proves Exposure to low levels of electromagnetic field has bad effect on our health. You are safe even if you sit next to your wifi.
Cause of Wi-Fi signal drop
Elements which conduct electricity like metals can cause wifi signal drop. For example , if any piece of metal is there between the device and the router , then you will feel a little bit of signal drop. Occurrence of wall also causes signal drop.