Episode 243 - Early Television: In London during 1926 John Logi Baird demonstrated a mechanical television system that used rotating discs to scan an image. The picture was made up of 30 vertical lines with 5 images per second. In 1936 at London's Alexandra Palace a series of trials of both the mechanical system and EMIʼs electronic system commenced. The team from EMI led by Alan Blumlein had developed what was called a High Definition system. The EMI technology sent 25 images per second each made up of 405 lines. It completely outclassed the Baird system and is the direct ancestor of the television we have today.
