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The William and Flora Hewlett Foundation
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Makes grants to address the most serious social and environmental problems facing society, where risk capital, responsibly invested, may make a difference over time.
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An independent federal agency created by Congress in 1950 to promote the progress of science.

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Semiconductors

Dope the semiconductor to create a diode or transistor. Watch the electrons change position and energy.

Not standalone  
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Version 1.04
634 KB
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Topics

Main Topics

  • Semiconductor
  • Diode
  • Transistor

Related Topics

Sample Learning Goals

  • Recognize that the battery is the driving force in a circuit.
  • Describe how n and p dopants change the structure of electron energy levels in a metal.
  • Explain why an np junction acts as a diode, allowing current to flow one way but not another.

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Teaching Ideas

Tips for Teachers

The teacher's guide contains tips for teachers created by the PhET team (PDF).

Ideas and Activities for this Sim

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Software Requirements

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Windows Systems Macintosh Systems Linux Systems
Microsoft Windows XP/Vista/7
Sun Java 1.5.0_15 or later
OS 10.4.11 or later
Apple Java 1.5.0_19 or later
Sun Java 1.5.0_15 or later

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Translated Versions

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Credits

Design Team Third-party Libraries Thanks To
  • Sam McKagan
  • Kathy Perkins
  • Sam Reid (developer)
  • Carl Wieman
  • Interviewer: Wendy Adams
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