Ultimate Wave Form Helix with Wooden Stand, Alternate Model Foodsafe this metal helix lets stairwell-scale

this metal helix lets stairwell-scale wave-propagation experiments amplify the visibility of standing waves

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Ultimate Wave Form Helix with Wooden Stand, Alternate Model Foodsafe this metal helix lets stairwell-scaleExtending up to 65 feet from a 20cm closed height on the included wooden stand, this metal helix lets stairwell scale wave propagation experiments amplify the visibility of standing waves.