Tsirlin et al. (2012) refer to perceptual transparency with clarity as glass-transparency, and that with cloudiness as translucency. The present study involving overlapping achromatic figures examined how glass-transparency and translucency are influenced by overlapping and non-overlapping areas on transparent surfaces and the level of luminance of the background. Experiments were conducted wit...

Abstract In this issue This New Mineral Names has entries for 11 new species, including bohuslavite, fanfaniite, ferrierite-NH4, feynmanite, hjalmarite, kenngottite, potassic-richterite, rockbridgeite-group minerals (ferrirockbridgeite and ferrorockbridgeite), rudabányaite, strontioperloffite.