WitrynaIn 1974 chemist Frank Sherwood Rowland of the University of California, Irvine and his post-doctoral student, Mario J. Molina, suggested that long-lived organic halogen … WitrynaL ike an infection that grows more and more virulent, the continent-size hole in Earth's ozone layer keeps getting bigger and bigger. Each year since the late 1970s, much of the protective layer of stratospheric ozone above Antarctica has disappeared during September, creating what is popularly known as the ozone hole.

Mario J. Molina: Physics Today: Vol 74, No 2

WitrynaRowland and Molina publicised their results at a press conference in September 1974, soon after their first paper on the topic was published in the journal Nature. The two scientists showed that when CFCs rise into the stratosphere, they are bombarded by powerful doses of ultraviolet rays. WitrynaEpoka lodowcowa 4: Wędrówka kontynentów (ang. Ice Age: Continental Drift, 2012) – amerykański film animowany produkcji 20th Century Fox, którego światowa premiera … san francisco california county re

12.7 Catalysis - Chemistry 2e OpenStax

Witryna1974 Discovery. Scientists Sherwood (Sherry) Rowland and Mario Molina in a scientific article published in the journal Nature warn that human-generated CFCs are harming the ozone layer. 2010s 2010s - 2024 - 2016 - 2015 - 2014 - 2013 - 2012 - … Witryna9 kwi 2013 · Molina and Rowland (1974) concluded: Chlorofluoromethanes are being added to the environment in steadily increasing amounts. These compounds are chemically inert and may remain in the atmosphere for 40–150 years, and concentrations can be expected to reach 10 to 30 times present levels. WitrynaIn 1974 Mario Molina and Sherwood Rowland showed that chlorine compounds formed by the photochemical decomposition of chlorofluorocarbons (CFC or “Freon” gases) … shorten pendant light cord without cutting