類別

物理與化學（物理）

參賽者

劉軍

作品名稱

液體圓舞曲 Liquid Waltz

科學圖說 Scientific introduction

液體高速攝影，是利用閃光燈的最小輸出，在黑暗環境下凝固高速運動液體的一種攝影方法。快門可以達到2萬分之1秒。利用不同液體間的表面張力，以噴射、反彈、風吹等方法，表現不同表面張力的液滴，捕捉在碰撞時產生千姿百態的瞬間。液體由甘油、普通水、增稠劑製成，在液體加入食用色素增色。本圖反映液體碰撞的短暫過程，一般無法用肉眼觀察。

In liquid high-speed photography, the flash is set to the lowest output. Liquids are photographed in a dark environment with shutter speed reaching 1/20,000 second. These images are the result of differences in surface tension, as well as spray jet, repulsion and blowing of air. Mid-air collisions caused different effects. These images were produced with glycerin and water, as well as thickening agents and food coloring. The very short impact process shown here cannot be observed with the naked eye.