Doppler Effect Kit lab
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Product Code : SCL-PL-12125
Doppler Effect Kit lab (SKU SCL-PL-12125) demonstrates the change in frequency heard when a sound source moves towards or away from an observer. A motor carries a sound generator along a track past a fixed receiver, and a digital display shows the shift as it happens. The kit suits senior secondary physics and undergraduate acoustics practicals. Buyers sourcing a Doppler effect kit in India can have this one quoted by Science Lab Supplies in Ambala, for schools, colleges, institutes, tenders or distributor stock.
Specifications
The Doppler kit is broken down part by part in the table below. In short, an aluminium alloy track base carries a motorised sound source whose speed is set with an electronic governor, a stationary transducer picks up the tone, and a multi-line LED panel shows speed and frequency together, all powered from the included 12 V DC adapter.
| Specification | Value |
|---|---|
| SKU | SCL-PL-12125 |
| Track base | Hardened structural aluminium alloy |
| Frame components | Balanced steel parts to limit vibration and track drift |
| Drive | Motorised carrier running along a tracking rail |
| Speed control | Variable electronic governor |
| Sound source | Calibrated generator giving a steady sinusoidal tone |
| Base frequency | 400 Hz or 500 Hz nominal |
| Source module | Insulated moving sound source |
| Receiver | Stationary high-sensitivity acoustic transducer probe |
| Display | Multi-line digital LED panel |
| Displayed values | Velocity and frequency at the same time |
| Power | 12 V DC adapter (included), plugs into a standard AC outlet |
| Documentation | Experiment manual with graphic data worksheets |
| Supplied by | Science Lab Supplies, Ambala, India |
Applications and Experiments for the Doppler Effect Kit
The kit turns the Doppler effect from a formula into a measurement: with a known source speed set, the raised and lowered frequencies can be read and compared with theory. It supports sound and wave topics in senior secondary physics and B.Sc. and engineering physics practicals on acoustics.
- Class 11–12 physics wave topics: the frequency rise as the source approaches and the fall as it recedes.
- Verifying the Doppler equation for a moving source and stationary observer at several speed settings.
- Estimating the speed of sound in air from measured frequency shifts and the known source velocity, then comparing it with an air-column result from the Resonance Apparatus Brass Pipe or the 440 Hz forks of the Tuning Fork Resonance Experiment Kit.
Keep fingers, hair and loose clothing away from the moving carrier while the motor is running.
Standard Scope of Supply
One kit comprises the main track base with its motorised drive assembly, the moving sound source module, a stationary receiver probe, the digital frequency display unit, a 12 V DC power adapter, and an experiment manual with graphic data worksheets.
Packing, MOQ and Lead Time
Quotations are available for a single demonstration kit or several kits for a practical class. Every quotation lists the packing, delivery time and price for the number requested, and other physics lab equipment in India from the sound range can be included on it.
Science Lab Supplies is a registered exporter holding an Importer-Exporter Code and can ship to buyers in Ethiopia, Tanzania, Uganda, the UAE, Saudi Arabia and Oman. Pricing for one kit or a class of them can be requested on the contact page or by saving the kit in the enquiry cart; for a formal bid, use the lab tender page.
Frequently Asked Questions
What does the display show during the experiment?
The digital LED panel shows the carrier velocity and the received frequency together, so the higher reading as the source approaches and the lower reading as it moves away can both be logged.
What is the source frequency?
The sound generator gives a steady nominal tone of 400 Hz or 500 Hz, the baseline for each run. The quotation confirms which base frequency is supplied.
How is the kit powered?
It runs from the 12 V DC power adapter included in the kit, which plugs into a standard laboratory socket. Switch off the motor drive before disconnecting the adapter.
Who supplies the Doppler Effect Kit lab?
Quotations for this kit are issued by Science Lab Supplies, a physics instruments supplier in India based in Ambala. It can be priced on its own or together with the acoustics and wave apparatus listed below.
Related Sound and Acoustics Apparatus
A Doppler run needs a steady tone, a way to pick it up and a way to check loudness, and the same bench can then cover reflection and string vibration. These Physics Lab items extend the kit into a wider acoustics practical, and any of them can be added to its quotation.
- Audio-Frequency Generator — signal source with 0–10 V amplitude over five decades.
- Bench Signal Generator — sine and square output from 5 Hz to 50 kHz in four ranges.
- Demonstration Loudspeaker — 125 mm, 8 Ω speaker in a beech and acrylic frame with 4 mm sockets.
- Microphone — crystal microphone in a moulded box with a 4 mm connection.
- Oscilloscope — 320 x 240 colour display and 2 MB memory.
- Digital Sound Meter — 30–130 dB range with fast or slow response and LED backlight.
- Law of Reflection of Sound Apparatus — two pivoting tubes over a 0–180° protractor scale.
- Sonometers — 60 cm wooden resonance box with steel cords and three movable bridges.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 22 October 2026
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