← Back
🚗 Doppler Effect Calculator
Calculate frequency shift due to relative motion between source and observer
📐 Doppler Effect Formulas
f' = f × (c ± v_obs) / (c ∓ v_source)
Δf = f × v / c (approximation for v << c)
Redshift z = (λ_obs - λ_emit) / λ_emit
f' = observed frequency, f = emitted frequency, c = speed of wave, v = relative velocity
Observed Frequency:
-
Frequency Shift:
-
Wavelength Shift:
-
Effect Type:
-
💡 Tips & Information
- Approaching source = higher frequency (blue shift)
- Receding source = lower frequency (red shift)
- Sound: v << c, so approximation works well
- Light: relativistic effects important at high velocities
- Used in radar, astronomy, and medical imaging