In Our Time Conductors and Semiconductors
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Feb 23, 2012 Explore the evolution of electricity, from ancient Greeks to modern technology like transistors and superconductors. Learn about conductors, insulators, and semiconductors and their role in generating electrical current. Discover the wonders of superconductors with zero resistance and unique properties. Trace the history of semiconductors from transistors to optical communications and their impact on technology. Dive into the applications of superconductivity in areas like magnetic field detection and the Large Hadron Collider.
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Ancient Greek Electricity
- The ancient Greeks discovered electricity by rubbing amber, which they called "electron."
- This led to the modern words "electron" and "electronics."
Benjamin Franklin's Experiment
- Benjamin Franklin's kite experiment in a thunderstorm was a key early investigation into electricity.
- He identified positive and negative charges, laying the groundwork for later discoveries.
Electron Energy States
- Electrons occupy different energy states within an atom, similar to rungs on a ladder.
- These energy levels determine how strongly electrons are held by the nucleus.