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and no information as to the grain

*
Fig. 4a.
Wheeler P. Davey (1886-1959 *). “Radiography of Metals.” Transactions of the American Institute of Mining Engineers 53 (1916) : 150-160
University of California copy, digitized October 31, 2012
also Michigan copy (less good scans), digitized June 20, 2011

epigram p 160
 

16 May 2015

tags:
grain; skiagraphy; W. P. Davey, “Radiography of Metals.” (1916)