Baird's demonstration at the Royal Institution

Baird's demonstration at the Royal Institution showcased the first practical television system. Using a spinning drum with a light-sensitive surface, he scanned images line by line with an electron beam, converting visual information into electrical signals. These signals were transmitted over a cable and then used to control a similar scanning system at the receiving end, recreating the image on a screen. This pioneering work demonstrated how moving images could be transmitted over distances, laying the foundation for modern television technology by showing a feasible method to convert visual data into electronic form and back again.