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A tokamak bends a plasma's path into a ring

A tokamak uses a doughnut-shaped chamber and magnetic fields to guide charged particles, with different parts of the magnetic system helping confine, shape, and control the plasma.

5–7 min

Questions you could explore

  • What does closing the path into a ring solve, and what does it leave unsolved?
  • How do different magnetic-field directions help keep charged particles away from the chamber wall?

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Energy

A solar cell's route from light to electricity

Shining sunlight onto a piece of silicon is only the first step in making solar power. When incoming photons knock electrons loose inside the semiconductor, an internal electric field built into the solar cell's layers must separate those charges and guide them into an external circuit before they simply recombine.

4–5 min
A tokamak bends a plasma's path into a ring | Speech Topic | speaking.app