Arriving late for a political conference, the college student asks another student standing by the door, "How long has the candidate been talking now?"
"Half an hour."
"And what is he talking about?"
"That I wouldn't know, he hasn't said."
Frederick George DonnanDied 16 Dec 1956 at age 86 (born 5 Sep 1870).British chemist, born in Ceylon, whose research contributed to the development of colloid chemistry. He is remembered for his investigation of the Donnan Effect (1911) which advanced the understanding of the living cell. This is the effect of a semi-permeable membrane between two electrolytes and the electrical potential thereby produced. In other work with soap solutions, he related the efficiency of hydroxyl ions in the emulsification of oils to the formation of soaps on the surface of the drops. In wartime, he worked on the industrial-scale synthesis of ammonia and nitric acid. He was blind in one eye.« |
