Resource : Cooke and Wheatstone 5-needle telegraph

In the early 1800s, sending a message over any distance was long-winded. Even with the development of the postal service, messages, letters and important instructions carried on horseback by coach, ships and early railroads could take days – even weeks to reach their destination. A far cry from today’s world of instant messaging and increasingly sophisticated communication technologies – all at the touch of a button. The invention of the electric telegraph transformed world communications. It also marked the first practical use of electricity.

Resource : Faraday’s Electric Generator

This simple-looking and basic device, built by Michael Faraday in 1831, revolutionised almost every aspect of the lives of people all over the world. It is the first ever generator of electricity.