Intrivia.

The mirror is often used as a literary metaphor. Its powers of reflection, refraction and subtraction just prove too tempting a device to leave on the wall. It is also an object with a number of practical functions. Brunelleschi reportedly used a mirror to develop his theory of linear perspective, and the great painters relied on them for the production of self portraits. At the Whitechapel Gallery, mirrors placed at angles to each other neatly divide abstract films into simp