{"product_id":"doppler-ball-1","title":"Doppler Ball","description":"\u003ch3\u003e\u003cspan style=\"color: #ff8000;\"\u003e\u003cstrong\u003e\u003cem\u003eHear pitch change due to motion and the Doppler effect\u003c\/em\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eTurn a classic wave phenomenon into an unforgettable experience. Arbor Scientific’s \u003cstrong\u003eDoppler Ball\u003c\/strong\u003e is an \u003cstrong\u003eArbor Scientific-exclusive\u003c\/strong\u003e demonstration that makes the \u003cstrong\u003eDoppler effect\u003c\/strong\u003e audible and engaging. Inside the soft foam ball is a battery-powered buzzer—turn it on and play catch. Thrown fast enough, students clearly hear the pitch change as the ball moves toward and away from them. Swing it on a string to create a continuous, controlled example of frequency shift. Simple, safe, and memorable, it brings wave physics to life in seconds. \u003cem\u003e(Two AAA batteries included; color may vary.)\u003c\/em\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cstrong\u003eWhy Teachers Love the Doppler Ball\u003c\/strong\u003e\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstant “aha” moment: \u003c\/strong\u003eStudents hear the frequency shift immediately—no graphs or screens required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile demonstrations:\u003c\/strong\u003e Use by throwing, catching, or swinging on a string for repeatable results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuick setup: \u003c\/strong\u003eBuilt-in buzzer and included batteries mean it’s ready right out of the box.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArbor-exclusive design:\u003c\/strong\u003e Purpose-built for classrooms to demonstrate Doppler clearly and reliably.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Arbor Scientific","offers":[{"title":"Default Title","offer_id":55867183071305,"sku":"P7-7130","price":17.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0030\/6207\/1369\/files\/Gemini_Generated_Image_d38khdd38khdd38k.png?v=1783948271","url":"https:\/\/www.arborsci.com\/products\/doppler-ball-1","provider":"Arbor Scientific","version":"1.0","type":"link"}