Ozone–oxygen cycle Ozone–oxygen cycle The ozone–oxygen cycle is the process by which ozone is continually regenerated in Earth's stratosphere, converting ultraviolet radiation (UV) into heat. In 1930 Sydney Chapman resolved the chemistry involved. The process is commonly called the Chapman cycle by atmospheric scientists. Most of the ozone production occurs in the tropical upper stratosphere and mesosphere. The total mass of ozone produced per day over the globe is about 400 million metric tons. The global mass of ozone is relatively constant at about 3 billion metric tons, meaning the Sun produces about 12% of the ozone layer each day. And if
Lauriston S. Taylor Lauriston S. Taylor Lauriston S. Taylor (1 June 1902 – 26 November 2004) was an American physicist known for his work in the field of radiation protection and measurement. He established standards for X-ray radiation exposure for the first time in the 1920s, which eventually led to a group of government organizations that set the standards over the next 50 years. Taylor remained active in debates about radiation exposure into his 80s, often advocating the viewpoint that small doses of radiation were not important. He served as president of the Health Physics Society (HPS) from 1958 to 1959. He was