51.0 MB (1.6 MB compressed)
4643 x 3839 pixels
39.4 x 32.5 cm ⏐ 15.5 x 12.8 in (300dpi)
ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY
Bicycle gear mechanism. View of the gear mechanism on the rear wheel of a bicycle. Attached to the rear axle, this gear mechanism consists of toothed cog-wheels of various sizes. The cog-wheels work to transform the rotary motion of the bicycle chain into wheel rotation. The combinations of small and large cog-wheels produce a combination of slow to fast wheel rotation, making pedalling a bicycle more energy efficient.
Model release not required. Property release not required.