/oss/taxonomy/term/3892/all en /oss/article/technology-general-science/connection-between-frosted-lightbulbs-bad-pick-lines <p>Way back in 1771, Swedish chemist Karl Wilhelm Scheele was investigating the properties of a mineral known as fluorspar (calcium fluoride). He mixed the pulverized rock with sulfuric acid and heated the mixture. The results were literally staggering! Scheele practically choked on the vapours that were produced, but he survived to make a dramatic discovery. The clear glass vessel in which he had combined the fluorspar and sulfuric acid had become cloudy. This cloudiness, was the glass having partially dissolved! How did this happen?</p> Wed, 22 May 2019 03:11:53 +0000 Joe Schwarcz PhD 7775 at /oss