"I am a former science teacher. This looks like an insert for a ripple tank. They are used for teaching wave physics. The numbers are so you can measure frequency. The bar and lump are to create wave ...
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Islands.com on MSNA Louisiana College Town Is A Buzzy City With A Trendy Downtown And Award-Winning Bike TrailsHead to a city in Northern Louisiana for a buzzy collegetown vibe, a trendy downtown area, and incredible bike trails through ...
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