Iridium and Osmium Discovery - Periodic Table of Videos
Why the open web links it
Explains the historical discovery of osmium and iridium by Smithson Tennant, with insights from Professor Martyn Poliakoff.
Linked by 4 independent sites, 2 of them widely read in the 2026-10 crawl of the open web, including york.ac.uk, royalsociety.org, magicalptelements.com.
Cited in 1 Wikipedia article, including Smithson Tennant.