ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY / SCIENCE PHOTO LIBRARY ANDREW BROOKES, NATIONAL PHYSICAL LABORATORY / SCIENCE PHOTO LIBRARY
Testing an antenna. Researchers setting up an antenna to be calibrated inside an anechoic chamber. The protruding tiles are part of the wall of the anechoic chamber. The arrangement of these tiles minimises echoes (the reflection of sound waves), providing the conditions needed for acoustic tests. Photographed at the National Physical Laboratory in Teddington, UK.
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