Sound and Doppler Effect
PHYS 210 · Module 6
This module applies wave concepts to sound, hearing, acoustics, loudness, and moving sources or observers. Students study sound waves, the decibel scale, Doppler shifts, and practical wave technologies.
Lessons in this module
Sound waves and acoustics
Sound is a longitudinal mechanical wave involving pressure and density variations. This lesson introduces sound propagation, acoustics, pitch, timbre, and resonance.
Intensity and the decibel scale
Sound intensity measures power per area, while decibels provide a logarithmic scale suited to human hearing. This lesson explains intensity, sound level, and safe listening.
The Doppler effect
The Doppler effect is the shift in observed frequency caused by relative motion between source and observer. This lesson derives and applies Doppler formulas for sound.
Applications of wave physics
Wave physics appears across technology, science, medicine, music, communication, and engineering. This lesson surveys major applications and shows how core wave ideas connect them.
Ask your AI physics guide
Ask anything about Waves and Oscillations — Sound and Doppler Effect, or choose a suggested question below.
AI responses are educational and may not be perfectly accurate. Press Enter to send, Shift+Enter for new line.