wireless

How Bluetooth works — from frequency hopping and BLE to pairing, profiles, security, and comparisons with WiFi, Zigbee, and Thread.

Wireless data is invisible, but the engineering behind it is surprisingly concrete — radio waves, spectral efficiency, and antenna tricks.

5G is faster, lower-latency, and more efficient than 4G. It also enables connected cars, remote surgery, and smart factories. Here's how it actually works and what's hype.