How do radios tune to one station? Learn how tuning selects frequencies and how the first wireless signal crossed the Atlantic.
Episodes
Transistors
What is a transistor and why does it matter? Learn how transistors replaced vacuum tubes and power radios, computers, and smartphones.
Vacuum Tube Amplifier
How do vacuum tube amplifiers boost sound? Learn how they powered early electronics—and how carbon nanotubes could enable future space elevators.
The Vacuum Tube Diode
What invention launched electronics? Learn about the vacuum tube diode, how it controls electrons, and why it powered radios and computers.
The Edison Effect
What if Edison’s greatest discovery wasn’t the light bulb? Learn how the Edison Effect helped launch modern electronics.
The Relay
Discover how a relay works and why this clever electromagnetic switch is one of the most important tools in modern electronics.
Inventioneer – Keystone Inventor
Discover what makes a keystone inventor as Dr. Roger Billings explains how inventioneering leads to real, lasting innovation.
Inventioneering
What does it really take to bring ideas to life? Dive deeper into the world of inventioneering—the dynamic mix of creativity, engineering, & problem-solving.
How to Invent
How do great inventions begin? Tune in for fun, practical look at how anyone can start turning ideas into inventions.