Photos from the Visual Quantum Mechanics
workshop:
Observing the emission spectra from LED's
- The LED apparatus. You can make your own using a
breadboard or
- purchase this version through Ztec Co
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- The voltmeter is used to determine the turn on voltage
of the LED.
- Relating the turn on voltage to the emitted light
frequencies produces a linear
- graph whose slope is Planck's constant.
- One computer simulation allows students to try different
methods of modeling
- the energy levels of a material that would produce
the spectra observed in the lab.
- Other simulations allow students to connect between
the double-slit diffraction
- experiment and the wave nature of matter.
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- How an infrared detector works was explored by observing
its behavior when
- exposed to ultraviolet and infrared radiation.
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- Back