Invisible art: Sight for sore eyes?

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Media captionIs there more to invisible art than meets the eye?

Here's my report about the art exhibition - Invisible: Art about the Unseen 1957 - 2012 which brings together works from the past half century that explore ideas related to the invisible and the hidden.

The exhibition includes work by some of the most important artists of our time as well as younger artists who have expanded on their legacy - with works to observe and take part in.