Cycling art, energy and locomotion: a series of remarks on the development of bicycles, tricycles, and man-motor carriages (1889)
Scott, Robert Pittis · Philadelphia, J. B. Lippincott · leaf 173
to reducethis to nothing, since in mathematical calculations,rolling friction on hard surfaces is usually neglected,as compared with sliding friction. In actual practicethis would not quite hold good, since oil and dirt willmake a difference. The balls, in the ordinary bearingsin the market, roll…
Cycling · Bicycles
Internet Archive · Boston Public Library · Public Domain Mark 1.0. Free to use for anything.
