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A Dutch chemist called Van Marum was probably the first person to detect ozone gas sensorially. In the description of his experiments, he mentioned the notion of a characteristic smell around his electrifier
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The first technical-scale application of ozone took place in Oudshoorn, Netherlands, in 1893
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In 1940, the number of ozone installations that were in use worldwide had only grown to 119.
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In 1985, scientists identified a thinning of the ozone layer over the Antarctic during the spring months which became known as the "ozone hole". The scientific evidence shows that human-made chemicals are responsible for the creation of the Antarctic ozone
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In 1977 this number, had increased to 1043 ozone installations.
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The largest ozone hole: 24 September 2006.
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The latest false-color view of total ozone over the Antarctic pole. The purple and blue colors are where there is the least ozone, and the yellows and reds are where there is more ozone.
