56.2 MB (4.1 MB compressed)
3904 x 5036 pixels
33.0 x 42.7 cm ⏐ 13.0 x 16.8 in (300dpi)
STEVE HORRELL / SCIENCE PHOTO LIBRARY STEVE HORRELL / 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 the bicycle more energy efficient.
Model release not required. Property release not required.