File:Fanning friction factor.JPG

.The figure was taken from Transport Phenomena by R. Byron Bird, Warren E. Stewart and Edwin N. Lightfoot, ISBN 0-470-11539-4, pg 182.

Though this image is subject to copyright, its use is covered by the US fair use laws because: This is adaptation of Moody chart which yields a friction factor that is 4 times of Fanning friction factor. Huywilliam (talk) 20:34, 2 March 2017 (UTC)
 * 1) It illustrates educational purpose.
 * 2) The image is used as the primary means of visual identification of the article topic.
 * 3) The use of the chart will not affect the value of the original work or limit the copyright holder's rights or ability to distribute the original.