surfaces of weakness
Plate 9, Fig. 11. Fatigue of Swedish iron by reversals of a stress of 12.4 tons per sq. inch. Magnification 1000 diameters.
after 10,000 reversals.
(cropped from border, squared)
illustrating J. A. Ewing (1855-1935 * ) and J. C. W. Humfrey. “The Fracture of Metals under Repeated Alterations of Stress.” Philosophical Transactions : Mathematical and physical sciences. Series A. 200 (1903) : 241-250, followed by four plates
Cornell copy, digitized August 20, 2013
closer to the wrist
flattening the sharps, and
sharpening the flats
ex John Nevil Maskelyne. 'Sharps and Flats' : A Complete Revelation of The Secrets of Chance and Skill (1894) : 330
by way of todayʼs chance reading in Ricky Jay, his Celebrations of Curious Characters (2011) : 49
epigram ex p 246
tags: gpoy; hands; lines; metallurgy; ruination
J. A. Ewing; J. C. W. Humfrey; Ricky Jay; J. N. Maskelyne