Transmission Line Theory: How the first transatlantic cable led to the birth of modern TL theory

The key to understanding modern transmission line theory is to first understand its history. This is the story of how the first Transatlantic Telegraph Cable in 1858 led to the birth of Transmission Line Theory. Professor William Thomson (later Lord Kelvin) was the genius who developed the initial breakthrough that led to the first accurate model of a long cable. The mathematics of Lord Kelvin's analysis is fascinating - and crucial to understanding how modern transmission theory was developed. 00:00 Introduction 00:39 Motivation 01:53 A primitive starting point 02:58 Description of Kelvin's model 09:41 The first transatlantic cable 11:32 Lord Kelvin rises