57.0 MB (5.8 MB compressed)
3984 x 5000 pixels
33.8 x 42.4 cm ⏐ 13.3 x 16.7 in (300dpi)
PAUL RAPSON / SCIENCE PHOTO LIBRARY PAUL RAPSON / SCIENCE PHOTO LIBRARY
Ultrasonic testing of the walls of high-pressure gas cylinders. The technician is holding a transducer against the side of a cylinder. The transducer passes high-frequency sound waves through the metal and picks up any echoes. This allows the technician to assess the thickness of the cylinder wall, and to check for any defects.
Model release available. Property release not required.