Bunsen Robert is a famous German chemist in the19th century. 183 1 After graduating from the University of G? ttingen, he has been engaged in chemical research and teaching for 55 years. Its research scope involves electrochemistry, physical chemistry, analytical chemistry and so on. He made great contributions to photochemistry and created bunsen burner. His outstanding achievements in science are inseparable from his earnest and meticulous scientific attitude. One day, he put the filter paper in the sun to dry, and there was broken sediment on the paper. Unexpectedly, just as he walked away, a fly suddenly flew to the filter paper and greedily sucked the sweet sediment. Bunsen was surprised and jumped at it, but the fly flew away. He called the police while chasing, which attracted several pupils to chase the "enemy" and finally caught the fly. Benson was very happy. He put the crushed flies into a platinum crucible, burned and evaporated the flies, and finally tested and weighed them. It is determined that the sediment sucked out by flies is 1.05438+0 mg converted into beryllium oxide. He added the weight of 1 Ol mg to the total amount of sediments, and finally obtained extremely accurate beryllium analysis results.