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Quantum Wave Interference
Unrestricted Use
CC BY
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When do photons, electrons, and atoms behave like particles and when do they behave like waves? Watch waves spread out and interfere as they pass through a double slit, then get detected on a screen as tiny dots. Use quantum detectors to explore how measurements change the waves and the patterns they produce on the screen.

Subject:
Physics
Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
Kathy Perkins
Sam McKagan
Sam Reid
Wendy Adams
Date Added:
09/09/2006
Rutherford Scattering (AR)
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CC BY
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How did Rutherford figure out the structure of the atom without being able to see it? Simulate the famous experiment in which he disproved the Plum Pudding model of the atom by observing alpha particles bouncing off atoms and determining that they must have a small core.

Subject:
Physics
Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Chris Malley
Kathy Perkins
Michael Dubson
Sam McKagan
Wendy Adams
Date Added:
03/02/2011
Semiconductors
Unrestricted Use
CC BY
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Dope the semiconductor to create a diode. Watch the electrons change position and energy.

Subject:
Career and Technical Education
Technology and Engineering Education
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Kathy Perkins
Sam McKagan
Sam Reid
Wendy Adams
Date Added:
10/02/2006
Semiconductors (AR)
Unrestricted Use
CC BY
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Dope the semiconductor to create a diode. Watch the electrons change position and energy.

Subject:
Career and Technical Education
Technology and Engineering Education
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Kathy Perkins
Sam McKagan
Sam Reid
Wendy Adams
Date Added:
07/02/2008
Simplified MRI
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CC BY
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Is it a tumor? Magnetic Resonance Imaging (MRI) can tell. Your head is full of tiny radio transmitters (the nuclear spins of the hydrogen nuclei of your water molecules). In an MRI unit, these little radios can be made to broadcast their positions, giving a detailed picture of the inside of your head.

Subject:
Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Danielle Harlow
Kathy Perkins
Michael Dubson
Ron LeMaster
Sam McKagan
Date Added:
11/16/2007
Stern-Gerlach Experiment
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CC BY
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The classic Stern-Gerlach Experiment shows that atoms have a property called spin. Spin is a kind of intrinsic angular momentum, which has no classical counterpart. When the z-component of the spin is measured, one always gets one of two values: spin up or spin down.

Subject:
Physics
Science
Material Type:
Simulation
Provider:
University of Colorado Boulder
Provider Set:
PhET Interactive Simulations
Author:
Carl Wieman
Michael Dubson
Sam McKagan
Date Added:
10/01/2006