The use of zinc sulphide as an opacifier, with some notes on the results of attempts to produce luminous enamels (1920)
Twells, Robert · leaf 38
E91/IV.S. Opacity increases ± - m m <0 Opaque, Baa/bubbled m o :— Opaque whencover coat 1 E3 i 1 1 This half 0 field jsopaque th pqfehes, other-wise if is grfenish m — ot30o 2 ,25- ::::: or thereIn patches. lubble of field hos qlittle opacity, os hnoch in :S63 - m//of blue castone] this is-Jin… … 1?
Zinc sulfide · Opacity (Optics) · Enamel and enameling · Metal coating · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
