琴弦四季豆的秘密

· 物理萬花筒 Ibhuku elingu-5 · 秀才書屋
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台灣有一家廠商販售一種稱為琴弦四季豆的產品，號稱只要在提琴尾板處加裝四顆豆子就能大幅改善提琴音色；而且不論大中小提琴均適用。根據廠家提供資料四季豆的形狀為不規則球型；尺寸：直徑1.2公分；重量：每顆豆小於0.2公克；主要承載材料：PU。它的科學原理是甚麼？需要花那麼多錢買那東西嗎？


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