Planck's Constant

Students construct a variable brightness LED circuit. They calculate the frequencies given the LED wavelengths of 4 different color LEDs. They measure the voltage that causes the LED to just turn on and use it to calculate the energy of the emitted photons. They construct a graph of energy vs. frequency and calculate Planck's constant from the slope.

Grade Level: Advanced Placement • High School

Subject: Physics

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	Planck's Constant	619.71 KB
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Standards Correlations

IB^® Topics	AP^® Topics
12.1	Physics 2: 7.6

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Essential Physics Modular Circuits Kit

This system is ideal for hands-on experimentation with basic circuits and includes more components than the Basic Set, as well as sensors. It is a component of the Essential Physics program.

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Source Collection: Lab #06