Quantum Dots Rebuilt by Light in a Trillionth of a Second
Argonne scientists have unveiled new methods for controlling material properties. The breakthrough enables researchers to ...
Hackaday6mon
Mining And Refining: Lead, Silver, And Zinc
Rather, these three metals are far more likely to combine with sulfur, so their ores are mostly sulfide minerals. For lead, the primary ore is galena or lead (II) sulfide (PbS). Galena is a ...
EurekAlert!12d
Building blocks of innovation: Light-induced symmetry changes in tiny crystals
Argonne researchers have shown that they can use light to temporarily alter the crystal symmetry within lead sulfide quantum dots. This process reduces the off-centering of lead atoms and affects the ...
Smithsonian Magazine1mon
Five Unusual Ways People Used Lead—and Suffered For It
Upper-class men and women in ancient Egypt commonly defined their eyes with kohl—a dark powder made from lead sulfide. Strangely, the makeup seemed to offer protection from common eye infections ...
Smith College8y
Eyeliner, Egypt, 4000 BCE
In southern Iraq and in Egypt, men and women alike painted kohl around their eyes to make them look larger as well as to protect them from the evil eye. This thick black ointment, made of ground lead ...
Light alters crystal symmetry to control material properties
Artistic illustration of lead sulfide quantum dots as they undergo structural changes when exposed to light, with lead atoms ...
ESGold Identifies Rhodonite at Montauban, a Key Indicator Mineral of Broken Hill-type High-Grade Lead-Zinc-Silver Deposits
March 20, 2025) - ESGold Corp. (CSE: ESAU) (OTCQB: SEKZF) (FSE: Z7D) ("ESGold" or the "Company") is pleased to announce the identifi ...