What Wi-Fi Actually Is
Wi-Fi is a wireless technology that lets devices connect to the internet without using cables. It uses radio waves to send data between your device and a router.
How Wi-Fi Sends Information
Your router converts internet data into radio signals. These signals travel through the air and are picked up by your phone, laptop, or smart device. Your device sends signals back the same way.
Frequencies and Channels
Wi-Fi mainly uses two frequency bands: 2.4 GHz and 5 GHz. Lower frequencies travel farther but are slower. Higher ones are faster but have shorter range.
The Role of the Router
The router is the “hub.” It manages traffic, makes sure devices don’t collide, and keeps the connection stable. It also handles security through passwords and encryption.
Security and Encryption
Modern Wi-Fi uses encryption methods like WPA2 or WPA3. These protect your network so outsiders can’t easily read or intercept your data.
The Simple Takeaway
Wi-Fi works by sending information through invisible radio waves between your device and a router. It’s fast, wireless, and essential for everyday internet use.