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Essential Physics Demo: Rotating Speaker Bar

Avg. Ratings: 1.0 (1 Review)
Experiment With Sound Wave Interference

  • Includes a detailed demonstration guide.
Affordable, Easy, Fun
Present these demonstrations in front of your class to excite your students about learning core physics concepts. Set up and execution are simple, so you can spend more time engaging your students. Ideal for introducing a unit or using as reinforcement after a lesson, these demos are available for all fundamental physical science topics.

Demonstrate the Doppler effect and the concept of sound interference with this oscillating speaker bar. Create active participation among the entire class as students mobilize around the classroom and listen as changes in movable objects affect sound quality. When the speaker bar and students are stationary, the sound will be constant. When the bar rotates and students remain put or choose to roam the room, varying interference patterns will be heard. As interference patterns change from constructive to destructive, overall sound quality will change. Requires a connecting cord and function generator, not included.



Item # Description Unit Availability Price Quantity
470124-124 Essential Physics Demo: Rotating Speaker Bar
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Total Ratings: 1
Avg. Ratings: 1.0 out of 5

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Yes: 0 No: 1 
Steve H. Education / Teacher / Oak Forest, IL
No, I didn't recommend
I would strongly advise against ordering this device. Assembly instructions are not included in the shipment and it's impossible to mount the sound bar correctly to the rotator.
Reply associate Published 07/05/2018
Thank you for your review. We are currently working with the manufacturer to obtain more inclusive instructions for you per your request through our technical support team. Please check your email shortly for a follow up from our team as we are currently working on this inquiry. Thank you for your review, your feedback is important to us.
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