Calibration of arc lamps for testing col
๐
Article
๐
1945
๐
Elsevier Science
๐
English
โ 64 KB
Work has been in progress at the Bureau for several years on a reference standard lamp for testing colorfastness to light of textiles, paper, and similar materials, and on means for calibrating, in terms of this standard, the lamps used in laboratories throughout the country." The purpose is to prov