These pieces – particularly Kosuth's seminal work Neon (1965) – probe the artistic qualities of the medium. It is a lightform created to illuminate only itself – light for light's sake. This makes it ...

The neon experience builds, from a single 'peep hole' ring in the South Duveens, through which you can glimpse swirls of radial light and an imposing octagon in the central gallery. The fractured neon ...