Physics › Section K · Oscillations and waves › Topic K.7
Superposition, interference, and wave energy
When two waves meet, they simply add. That one rule explains loud and quiet spots in a room, the notes a guitar string can play and the throbbing of two nearly matched tones, and the energy a wave delivers depends on the square of its amplitude.
In this topic
- When waves meet
- Constructive and destructive interference
- Standing waves
- Standing waves on a string
- Worked example: a violin string
- Beats
- Worked example: tuning by beats
- Waves carry energy
- Intensity
- Worked example: a laser pointer
- Common mistakes to avoid
- Key takeaways
This topic is part of Wuanberri Pro. Checking your access…