The Photoelectric Effect and Light’s Particle Nature
by Anonymous
Red light never ejects an electron no matter how bright, but change its color and they pop out at once.
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About this app
The Photoelectric Effect and Light as Particles is an interactive high-school physics learning app about how light ejects electrons from metal. Explore threshold frequency, electron kinetic energy, and the different work functions of cesium, sodium, zinc, and platinum by changing light color, frequency, intensity, and metal. Guided missions help learners see why increasing intensity cannot compensate for light below the threshold, while higher frequency increases electron kinetic energy.
Use cases
- High-school students studying the photoelectric effect
- Physics teachers demonstrating threshold frequency and work function
- Learners reviewing the relationship Ek = hf − W
- Classroom activities on the particle nature of light
Features
- Three interactive sections covering threshold frequency, electron kinetic energy, and metal work functions
- Adjustable light color, frequency, intensity, and metal selections
- Visual display of ejected electrons and electron counts
- Graph showing the linear relationship between frequency and kinetic energy
- Guided missions with reset and next controls
- Comparisons of cesium, sodium, zinc, and platinum