The science and engineering behind Amsterdam's "Rainbow Station"

If you're passing through the Amsterdam Central train station you may be pleasantly surprised to see a vibrant rainbow projected on the large arch that spans over its platforms. It's the "Rainbow Station" project by artist Daan Roosegaarde - and it was made possible by technology adapted specifically for the project through collaboration with NC State researcher Michael Escuti and ImagineOptix Corporation, the company he founded to pioneer patterned liquid crystal optic technologies.