MARY PREVITEâS SPEECH AT THE SIXTIETH ANNIVERSARY CELEBRATION OF THE LIBERATION OF THE WEIHSIEN CONCENTRATION CAMP. August 17, 2005 Weifang, Shandong Province, China. Honorable Mayor Zhang Xinqi, honorable friends of Weifang, you have earned our deepest gratitude by inviting us here to celebrate this Day of Liberation.
TIL that in 1669, Hennig Brand discovered phosphorus by boiling down urine and heating the residue to very high temperatures. He was trying to make gold though, and he hoped that the yellow color of urine meant there was gold in it. (chemicool.com) submitted 4 years ago by virnovus 8. 89 comments; share; save
Atomic Symbol: Rg Atomic Weight: [281] Melting Point: Unknown Boiling Point: Unknown. Word origin: Roentgenium is named for scientist Wilhelm Conrad RÃ¶entgen, who discovered X-rays. Discovery: Element 111 was discovered by the Gesellschaft fur Schwerionenforschung team led by Peter Armbruster and Gottfried MÃ¼nzenber in late 1994.