Doppler Rocket
The Doppler Rocket combines the elements of a toy with an audio Doppler shift to create an educational experience students won't forget. Demonstrating the Doppler shift is difficult to accomplish in the classroom. But PASCO's Doppler Rocket makes it easy. As the Doppler Rocket passes the students, they hear a noticeable shift in frequency. Velocities of 10 m/s can be easily achieved, resulting in a 20 Hz shift in frequency. The Doppler Rocket effectively teaches students the frequency shift concept and its rugged design allows for years of classroom use.
How It Works:
The Doppler Rocket emits a true, sinusoidal sound waveform at a constant frequency of approximately 620 Hz. The circuit and speaker are housed in skinned foam that protect the unit during normal impacts. The circuit is powered by a 9V battery.
Typical Application:
Flying Horizontally -- A set of two ropes can be passed through the center of the unit. This allows students to use the included handles to propel the Doppler Rocket across the room at high velocities. The unit is captured by the ropes and will fly past the students as they hear the change in pitch created by the motion of the sound source.
Features:
- Rugged -- Skinned foam protects the unit during classroom use.
- Multi-Function Handles -- The rope of the Doppler Rocket can be wound around the handles for easy storage.
- Handle Cushions -- Cushions prevent the Doppler Rocket from hitting the students' hands as they propel the rocket across the room.
- Low Power Consumption -- One 9V battery provides several years of typical use.