USING FILTERS WHICH POLARISE LIGHT, IT IS POSSIBLE TO REVEAL COLOUR OTHERWISE OBSCURE IN CERTAIN MATERIALS . POLARISED LIGHT  IS ALWAYS PRESENT BUT OUR EYES HAVE NOT EVOLVED TO SEE IT. MANY OF THE SCIENTIFIC IMAGES MADE AVAILABLE TO US ARE UNAVAILABLE IN VISIBLE LIGHT AND SOME USE POLARISED FILTERS. THE LIGHT BOXES  IN THIS SERIES REVEAL THIS PHENOMENA IN A PLAYFUL WAY  BY ILLUSTRATING POPULAR IMAGES THAT WE RECOGNISE WITHOUT EVER HAVING SEEN THEM.