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We Can’t See the Rainbow in the White

在白裡我們看不見彩虹

We Can’t See the Rainbow in the White

2019

無聲錄像,光,稜鏡,控制器,舵機,亞加力膠板,黃銅

video (no sound), light, prism, Arduino, servo motor, acrylic board, brass

Size variable, 8min45s

在白裡我們看不見彩虹

We Can’t See the Rainbow in the White

2019

無聲錄像,光,稜鏡,控制器,舵機,亞加力膠板,黃銅

video (no sound), light, prism, Arduino, servo motor, acrylic board, brass

Size variable, 8min45s

光使人看見。我把構成視覺世界最基本的元素分拆再分拆,讓不可見的可見。

這是一個解構光的過程。

我投影了一條白色的線,以動態影像和菱鏡進行分拆。 「白」於光學來說不是獨立存在,而是以光譜中的紅光、綠光和藍光混合而成的「顏色」。

首先,我使用菱鏡分拆白光,把三原色分拆出來,形成可見的彩虹光。

接著,我把綠光從白線中抽走,剩下紅光和藍光互相混和。線條由白色漸變為洋紅色,經菱鏡折射後形成了「雙色彩虹」。

最後,我再把紅光移除,線條成為純粹的藍。而藍光是原色,已不能再被分拆,最後呈現了一條「單色彩虹」。

When there is light, everything is visible. I decompose the fundamental element in the visual world to let the invisible become visible.

It is a process deconstructing light.

I project a white source of light on a surface while using prism and some moving images to “deconstruct” it. “White” is not an independent colour. It is a mixture of colour in the visible spectrum that is composed of the primary colour red, green and blue.

Through refraction of light, I separated the white source with the three primary colours to rainbow light using a prism.

After that, I took away green light from white light, leaving a mixture of red and blue light. Without green, the light source gradually reflects a new colour called magenta, hence the ‘rainbow’ becomes a ‘duo-coloured rainbow’.

Eventually, I erased red from magenta. The line results in pure blue colour. As blue is a primary coloured light that cannot be further decomposed by the prism, it appeared the ultimate light source in a monochromatic ‘rainbow’ colour.