71.4 MB (3.3 MB compressed)
6000 x 4160 pixels
50.8 x 35.3 cm ⏐ 20.0 x 13.9 in (300dpi)
EDWARD KINSMAN / SCIENCE PHOTO LIBRARY EDWARD KINSMAN / SCIENCE PHOTO LIBRARY
X-ray of vacuum tubes, once commonly used in electronic devices to amplify signals.
Model release not required. Property release not required.