BSTJ 3: 1. January 1924: Photomicrography and Technical Microscopy in Its Application to Telephone Apparatus. (Lucas, Francis F.) (1924)
leaf 36
BELL SYSTEM TECHNICAL JOURNAL 132 … Fig. A (c) A cast steel of 0.5% carbon in which the Widmanstatten or cleavage structure has developed somewhat similarly to that shown in the meteorite. The physical characteristics of the steel are dependent on the structural arrangement of its constituents, in this case pearlite (dark) and free…
Specimen · Photomicrography · Technical · Eyepiece · Objective · Magnification · Light · Microscopy · Microscope · Color · Arc lamp · Illuminating train · Technical microscopy · Polarized light · Bell system · Numerical aperture · Resolving power · System technical · Technical journal · Automatic arc
Internet Archive · Public domain (published before 1931). Free to use for anything.
