Home
Back
Doppler Frequency Equation:
| From: | To: |
Doppler frequency refers to the frequency shift that occurs in a wave, such as sound waves or light waves, due to the relative motion between the source of the wave and the observer. This phenomenon is known as the Doppler effect.
The calculator uses the Doppler frequency equation:
Where:
Explanation: This formula converts angular frequency (measured in radians per second) to regular frequency (measured in hertz) by dividing by \( 2\pi \).
Details: Doppler frequency calculation is crucial in various applications including radar systems, medical ultrasound, astronomy, and speed measurement technologies. It helps determine the relative velocity between objects by measuring frequency shifts.
Tips: Enter the Doppler angular frequency in radians per second. The value must be positive and greater than zero.
Q1: What is the difference between angular frequency and regular frequency?
A: Angular frequency (ω) is measured in radians per second, while regular frequency (f) is measured in hertz (cycles per second). They are related by ω = 2πf.
Q2: In what applications is Doppler frequency used?
A: Doppler frequency is used in radar speed guns, weather radar, medical Doppler ultrasound, astronomical redshift measurements, and various motion detection systems.
Q3: What causes the Doppler effect?
A: The Doppler effect occurs when there is relative motion between the wave source and the observer, causing a change in the observed frequency of the wave.
Q4: Can Doppler frequency be negative?
A: Yes, Doppler frequency can be negative when the source and observer are moving away from each other, indicating a decrease in frequency (redshift).
Q5: How accurate is this calculation?
A: The calculation is mathematically exact for converting angular frequency to regular frequency, assuming accurate input values.