An anechoic chamber is a room in which the walls, ceiling and floor are lined with an absorbent material to minimise reflections.
The Department of Electronic and Electrical Engineering is home to one such facility and have configured it as a spherical near field antenna measurement chamber, believed to be the only facility of its kind in a UK university. It is used to measure the radiation pattern of antennas in order to determine their gain, directionality and other key properties. This type of instrument has many applications including radio communications and radar.
Find out more at: https://www.ee.ucl.ac.uk/about/anechoic-chamber