UV Sensitive T Shirt04:33

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Published on August 29, 2017

In subdued lighting, the design on the front of this T shirt is just a plain, monochrome kind of beige. However when you step outside into the sunlight, the design becomes multicoloured.

It works because the design has been printed with inks that are sensitive to ultra violet light, and there is a reasonably amount of UV in sun light.

Here Tim demonstrates the effect using a UV lamp, which while not as powerful as sun light, still shows the effect quite well.

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