Question

Ozone layer was discovered by
A. Coriolis
B. Fabry
C. Wiener
D. Diener

Answer 1

The ozone layer or ozone shield is a region of the earth at the stratosphere that absorbs most of the sun's ultraviolet radiation. It contains a high concentration of ozone (O3) in relation to other parts of the atmosphere, although still small in relation to other gases in the stratosphere.

Complete Answer:
- The ozone layer was discovered by French physicist Charles Fabry and Henri Buisson in the year 1913. The ozone layer is mainly found in the lower portion of the stratosphere, from approximately 15 to 35 kilometers above the earth, although its thickness varies seasonally and geographically.
- It contains less than 10 parts per million of ozone, while the average ozone concentration in earth atmosphere as a whole is about 0.3 parts per million.
- Ozone layer blocks harmful UV rays from the sun and protects biological processes on the earth which are essential for the sustenance of life. If not blocked by the ozone layer, exposure to ultraviolet radiation can cause the risk of cataracts, skin cancer, and other detrimental effects among human beings as well as animals.

So, the correct answer to this question is option B that is Fabry.

Note: Ozone layer effectively blocks almost all solar radiation of wavelengths less than290 nanometers from reaching Earth's surface, including certain types of ultraviolet and other forms of radiation that could injure or kill most living things. In the stratosphere, which extends from about 10 to 50 kilometers above the earth's surface, the ozone layer is known as good ozone as it protects life on earth from the sun's ultraviolet radiation. Too much of this ground-level ozone is bad as it is harmful to breathe and also damages vegetation.