Linh wonders about bluetooth and wifi, and Dimitri tries his best to explain it… slowly… References: - https://en.wikipedia.org/wiki/Bluetooth - https://www.bluetooth.com/about-us/bluetooth-origin/ - https://en.wikipedia.org/wiki/Wi-Fi - https://en.wikipedia.org/wiki/Fidelity - https://en.wikipedia.org/wiki/Infrared Errata: - Bluetooth is named after a Viking king - Wifi: Wireless Fidelity - Fidelity: faithful or loyal - Sine or sinusoidal wave - Infrared is in the nanometer spectrum