tropicalia

'Tropicalia is a kind of closed labyrinth without a "wayout" at the end. When you enter it it has no ceiling, and in the spaces through which the spectator circulates there are tactile elements. As you penetrate further on, the sounds you were hearing from the outside (voices and all kind of sounds) are revealed as coming from a television receiver that is placed working at the very end of it.'

From:
Guy Brett, Hélio Oiticica, Whitechapel Gallery, London

> In air I presume
> ultraviolet