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. It is available from Science Lab Supplies in Ambala, India, for schools, colleges, training institutes, tender contractors and distributors.
Specifications
The kit is built on an aluminium alloy track base carrying a motorised sound source whose speed is set with an electronic governor. A stationary acoustic transducer picks up the tone, and a multi-line digital LED panel shows speed and frequency together. It runs from the included 12 V DC adapter.
| Parameter | Value |
|---|---|
| SKU | SCL-PL-12125 |
| Track base | Structural aluminium alloy |
| Sound source | Tone generator, 400 Hz or 500 Hz nominal |
| Drive | Motorised carrier with variable electronic speed control |
| Receiver | High-sensitivity acoustic transducer |
| Display | Multi-line digital LED panel (frequency and velocity) |
| Power | 12 V DC adapter (included) |
| 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: students set a known source speed, read the raised and lowered frequencies, and compare them 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.
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 for recording results.
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. Send your requirement through the contact page, collect items in the enquiry cart, or see the lab tender page for tender enquiries.
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 students can log the higher reading as the source approaches and the lower reading as it moves away.
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?
Science Lab Supplies, a physics instruments supplier in India, supplies the kit from Ambala and can quote it on its own or together with other acoustics and wave apparatus you need.
Related Sound and Acoustics Apparatus
Sound experiments can need a tone source, a pickup and a way of measuring loudness. These four items from the physics range extend the Doppler kit into a wider acoustics practical and can be quoted with it.
- Audio-Frequency Generator — audio signal source covering 1–100 kHz.
- Microphone — crystal microphone for showing voice waveforms on an oscilloscope.
- Digital Sound Meter — A- and C-weighted sound level readings from 30 to 130 dB.
- Law of Reflection of Sound Apparatus — measuring incident and reflected angles of sound.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
