Dobson, who developed a simple spectrophotometer (the Dobsonmeter) that could be used to measure stratospheric ozone from the ground. Its properties were explored in detail by the British meteorologist G. Eventually the spectrum of the missing radiation was matched to only one known chemical, ozone. It was deduced that the missing radiation was being absorbed by something in the atmosphere. Measurements of the sun showed that the radiation sent out from its surface and reaching the ground on Earth is usually consistent with the spectrum of a black body with a temperature in the range of 5,500вЂ“6,000В K (5,230вЂ“5,730В вЊ), except that there was no radiation below a wavelength of about 310В nm at the ultraviolet end of the spectrum. The ozone layer was discovered in 1913 by the French physicists Charles Fabry and Henri Buisson. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers (9 to 22В mi) above Earth, although its thickness varies seasonally and geographically. The ozone layer contains less than 10 parts per million of ozone, while the average ozone concentration in Earth's atmosphere as a whole is about 0.3 parts per million. It contains a high concentration of ozone (O 3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere. Continued abuse of our services will cause your IP address to be blocked indefinitely.The ozone layer or ozone shield is a region of Earth's stratosphere that absorbs most of the Sun's ultraviolet radiation. Please fill out the CAPTCHA below and then click the button to indicate that you agree to these terms. If you wish to be unblocked, you must agree that you will take immediate steps to rectify this issue.

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