55.8 MB (11.3 MB compressed)
3581 x 5448 pixels
30.2 x 46.2 cm ⏐ 11.9 x 18.2 in (300dpi)
PHIL DEGGINGER / SCIENCE PHOTO LIBRARY PHIL DEGGINGER / SCIENCE PHOTO LIBRARY
Antique clock with swinging pendulum. The pendulum swings with a period that varies with the square root of its effective length.
Model release not required. Property release not required.