United Visual Artists 'Momentum' project comprises a series of 12 objects that slowly oscillated in the dark void of the Barbican Gallery's 90m long Curve space. The installation takes its cue from the idea of Foucault's pendulum - an instrument designed to visualise invisible forces, such as the Earth's rotation. Every single part of the project - from the electronics to the mechanics - was researched and custom-built by UVA over nine months. Each swinging element had it's own 3D-printed acoustic-chamber, playing out a broad-textural soundtrack, and a light source that cuts a 360 degree plane through the smoke-filled void.