Acoustic testing chamber being used to monitor the sound output of a handheld polishing machine. The arrangement of the tiles (green) minimises echoes (the reflection of sound waves),providing the conditions needed for acoustic tests | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / CROWN COPYRIGHT |
Bildgröße: | 5200 px × 3481 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |