類別

物理與化學

參賽者

謝振岡

作品名稱

短暫之美 Transient Beauty

科學圖說 Scientific introduction

時常在路上，看著面帶笑容的孩子，手上拿著泡泡水，吹出一顆顆的泡泡，泡泡隨著光線折射，讓我看見了短暫而美麗的色澤，我們稱之為「薄膜干涉」。一束光照射於薄膜上，由於折射率不同，光波會被薄膜的上介面與下介面分別反射，且相互干涉而形成新的光波。然而，泡泡水中的油跟水，會因為重力及微氣流的影響，而在薄膜上產生不同的變化，所以細看之下，每次呈現的色澤與紋路都是截然不同。

We can often see children standing outside with smiles on their faces, as they hold a bottle of bubble solution in their hands, blowing bubble after bubble. Due to light refraction, transient and beautiful colors are produced. We refer to this as “thin film interference”. When light shines on a thin film, due to differences in the refractive index, light waves are separately reflected on the film’s upper and lower surfaces. New light waves are produced from mutual interference. Due to gravity and micro air currents, the oil and water in the bubble solution cause thin film variations. If you look closely, you will see that different colors and hues are produced!