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For a small fee of EUR 2 you can pay 14 days after delivery.
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article no. 12059
If you run really, really fast this green T-shirt might appear blue. And by fast we mean extra racy ;).
This effect is caused by the Doppler effect, which isn't only good for funny noises and fancy costumes, but thanks to Redshift it's also good for optical effects.
In short: the wavelength of the light changes through motion and our eye perceives it as another colour.
By the way, like most of our shirts, this motif is great for baffling people who have no clue about physics :). Just watch their faces go blank as they try to work it out!
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