A few weeks ago I went to the Anish Kapoor exhibition at the Hayward Gallery in London. I knew of Kapoor's sculpture work and had seen the brilliant Cloud Gate bean-shaped mirror sculpture in Chicago several years back, but I wasn't prepared for some of the works in this new exhibition. In particular the 'Vantablack' images. Image: Anish Kapoor at the Hayward Gallery/Southbank Centre Vantablack is a substance created 'with nanotechnology that absorbs up to 99% of visible ligh