Experiment: Debye-Sears Effect

Experiment: Debye-Sears Effect, 8000571 [UE1070550], Acoustics
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Objective: Determine the velocity of ultrasonic waves in liquids

Thematic focus: ..
• Observing the diffraction pattern at a fixed ultrasound frequency for two different light wavelengths.
• Observing the diffraction pattern for different ultrasound frequencies between 1 MHz and 12 MHz.
• Determining the corresponding sound wavelengths and the velocity of sound.

Experiment description: ..
The periodic variations of density caused by an ultrasonic standing wave pattern in a liquid act as an optical grating for the diffraction of a monochromatic parallel light beam that is transmitted in the direction perpendicular to the direction of the ultrasound wave.
From the diffraction pattern and the known wavelength of the light, it is possible to determine the sound wavelength and use that to calculate the velocity of sound in the liquid.

Delivery scope

Ultrasonic Continuous Wave Generator with Probe, 1002576 [U100061], Ultrasound

Ultrasonic Continuous Wave Generator with Probe

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Test Vessel, 1002578 [U10008], Ultrasound

Test Vessel

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Laser Diode for Debye-Sears Effect, Red, 1002577 [U10007], Ultrasound

Laser Diode for Debye-Sears Effect, Red

1002577 [U10007]
Laser Diode for Debye-Sears Effect, Green, 1002579 [U10009], Ultrasound

Laser Diode for Debye-Sears Effect, Green

1002579 [U10009]
Pocket Measuring Tape, 2 m, 1002603 [U10073], Measurement of Length

Pocket Measuring Tape, 2 m

1002603 [U10073]
Item No.: 8000571 [UE1070550]
Brand 3B Scientific
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