Geograph - photograph every grid square

The artwork is in an internal, glazed courtyard (not open to the public) adjacent to the ticket concourse at Four Lane Ends Metro Station, situated directly above the railway line. It is visible to passengers as they enter the ticket concourse and as they access the platforms below. 'Pulse' by Andrew Stonyer (2000) consists of a ring of corten steel, 6 metres in diameter, with a circle of bright red neon set into its external vertical surface.

The neon light responds to the noise (vibrations) of the trains as they enter and depart from the station. With no trains in the vicinity, the neon shines uninterrupted, but as trains approach or depart, the neon switches on and off (pulsing) with a frequency proportional to the noise of the train. Therefore as the noise of the train increases, the frequency of the pulsing increases. The noise of the trains is monitored by vibration sensors that are attached to the track. The neon is reflected in the glazing which surrounds the ourtyard; its incessant oscillation triggered by the movement of the trains heightens the passengers’ sense of arrival or departure.

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