On December 23, 1947, three researchers at Bell labs demonstrated a new device to colleagues. The device, a solid-state replacement for the audion tube, represented the pinnacle of the quest to provide amplification of electronic communication. The History Guy recalls the path that brought us what one engineer describes as "The world's most important thing." This is original content based on research by The History Guy. Images in the Public Domain are carefully selected and provide illustration. As images of actual events are sometimes not available, images of similar objects and events are used for illustration. All events are portrayed in historical context and for educational purposes. No images or content are primarily intended to shock and disgust. Those who do not learn from history are doomed to repeat it. Non censuram. Find The History Guy at: Facebook: https://www.facebook.com/TheHistoryGuyYT/ Patreon: https://www.patreon.com/TheHistoryGuy The History Guy: History Deserves to Be Remembered is the place to find short snippets of forgotten history from five to fifteen minutes long. If you like history too, this is the channel for you. Subscribe for more forgotten history: https://www.youtube.com/channel/UC4sEmXUuWIFlxRIFBRV6VXQ. Awesome The History Guy merchandise is available at: https://teespring.com/stores/the-history-guy Script by THG #ushistory #thehistoryguy #invention