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
A Carty Inventors_Metalwork Inventors â Metalwork Carl Benz - was the German mechanical engineer who designed and in 1885 built the world's first practical automobile to be powered by an internal-combustion engine Thomas Edison â invented and developed the tin foil phonograph. When working to improve the efficiency of a telegraph transmitter, causing him to wonder if he could record a telephone message. His experiments led him to try a